WO1987005121A1 - Foldable binocular and blank therefor - Google Patents

Foldable binocular and blank therefor Download PDF

Info

Publication number
WO1987005121A1
WO1987005121A1 PCT/US1987/000781 US8700781W WO8705121A1 WO 1987005121 A1 WO1987005121 A1 WO 1987005121A1 US 8700781 W US8700781 W US 8700781W WO 8705121 A1 WO8705121 A1 WO 8705121A1
Authority
WO
WIPO (PCT)
Prior art keywords
rectangular panel
pair
rectangular
folding
foldline
Prior art date
Application number
PCT/US1987/000781
Other languages
French (fr)
Inventor
William M. Bresnahan
Original Assignee
Bresnahan William M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bresnahan William M filed Critical Bresnahan William M
Publication of WO1987005121A1 publication Critical patent/WO1987005121A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/12—Adjusting pupillary distance of binocular pairs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • G02B23/18—Housings; Caps; Mountings; Supports, e.g. with counterweight for binocular arrangements

Definitions

  • the invention relates to a foldable binocular and the blank for forming the binocular.
  • binoculars of this type are known in the prior art and are made of a relatively thin semi-rigid material, such as cardboard. When folded, they are light in weight and compact and suited for taking to sporting events, concerts etc.
  • the invention relates to a -blank for a foldable binocular and the binocular formed therefrom.
  • the blank comprises a substantially rectangular sheet of relatively thin semi-rigid material divided by parallel foldlines into a series of rect ⁇ angular panels comprising a first rectangular panel having an intermediate outwardly folding foldline parallel to its longi ⁇ tudinal axis; a second rectangular panel hingedly attached to the first rectangular panel along an outwardly folding foldline, and having a pair of spaced apertures for receiving a pair of ocular lenses and having a trapezoidal flap hingedly attached to each of its short sides along an outwardly folding foldline; a third rectangular panel hingedly attached to the second rect ⁇ angular panel along an outwardly folding foldline and having an intermediate outwardly folding foldline parallel to its longi ⁇ tudinal axis; and a fourth rectangular panel hingedly attached to said third rectangular panel along an outwardly folding fold- line and having a pair of inwardly folding foldlines defining a central rectangular panel having a second pair of spaced aper ⁇ tures for receiving a pair of objective lenses and
  • the ocular and objective lenses are preferably attached to the blank; by way of lens plates attached to the inner surface of the second rectangular panel and the central rectangular panel, respectively.
  • the objective lenses are convex, it is most important to protect them from scratching during storage. This is achieved during assembly of the binocular by gluing portions of the fourth rectangular panel to the first and third rectangular panels, respectively, to. form a pair of rectangular flaps. These flaps cover the objective lenses when the binocular is folded. However, the concave ocular lenses may also be protected in a similar manner by an additional pair of rectangular flaps which cover the ocular lenses when the binocular is in folded position. These flaps are formed by constructing the blank in such a way that there is an additional panel on each side of the ocular lens panel and which may be folded in half to form a rectangular flap.
  • the interlocking trapezoidal side flaps may be opened to provide access to the inner surfaces of the lenses for cleaning, if necessary. It is also desirable to attached a two-part fastening element to the center of the inner surfaces of the lens plates, one part on one plate and a mating part on the other plate, so that the folded binocular may be held securely in the folded position when not in use.
  • a fastening element may be a two-part snap. or patches of VELCRO fabric.
  • Fig. 1 is an inner plan view of one embodiment of the binocular blank according to the invention.
  • Fig. 2 is a side elevation view of the binocular assembled from the blank of Fig. 1, in mid-extension, resting on the ocular lens panel.
  • Fig. 3 is a side elevation view of the assembled binocular in a more extended position than in Fig. 2.
  • Fig. 4 is a side elevation view of the assembled binocular of Fig. 2 in fully extended viewing position.
  • Fig. 5 is a side elevation view of the assembled binocular of Fig. 2 in folded position resting on the ocular lens panel.
  • Fig. 6 is a perspective view of the assembled binocular of Fig. 2.
  • Fig. 7 is an inner plan view of another embodiment of the binocular blank according to the invention.
  • Fig. 8 is a perspective view of the binocular assembled from the blank of Fig. 7.
  • Fig. 9 is a side elevation view of the binocular assembled from the blank of Fig. 7 in mid-extension.
  • Fig. 10 is a side elevation view of the assembled binocular of Fig. 9 in folded position.
  • the binocular blank 1 is divided into a series of rectangular panels A-A', B, C-C, D-D 1 , by parallel foldlines 3,4,6 which are outwardly folding. Panels A-A', C-C are further divided by outwardly folding foldlines 2 and 5, res- pectivel .
  • Panel D-D* is divided by inwardly folding foldlines 7,8 to define a panel E.
  • Trapezoidal tabs 9,9' are hingedly attached at outwardly folding foldlines 10,10' to the short sides of panel B and trapezoidal tabs 11,11' are hingedly attached at outwardly folding foldlines 12,12* to the short sides of panel E.
  • Ears 13,13' on tabs 9,9' can interlock with tabs 11,11' by in ⁇ sertion into slits 14,14', respectively.
  • a lens plate 15 hold ⁇ ing a pair of ocular' lenses 16 is attached to the inner surface of panel B with the lenses aligned over a pair of apertures (not shown) in panel B.
  • a lens plate 17 holding a pair of ob ⁇ jective lenses 18 is attached to the inner surface of panel E with the lenses aligned over a pair of apertures (not shown) in panel E.
  • the blank is folded along fold- lines 2-8, the inner surface of section D' of panel D-D 1 is glued to the inner surface of section A' of panel A-A'.
  • Tabs 9,9' are interlocked with tabs 11,11', respectively, by insert ⁇ ing ears 13,13' into slits 14,14', respectively.
  • the side ele ⁇ vation view of the assembled binocular is shown in Fig. 2 in mid-extension.
  • Fig. 3 shows a more extended view obtained by exerting pressure on foldlines 2 and 5.
  • the fully extended position is shown in Fig. 4.
  • the binocular By exerting pressure on flap sec ⁇ tions D-D' and panel B, the binocular may be flattened for stor ⁇ age.
  • FIG. 7 A second embodiment of the invention is shown in Fig. 7 which essentially shows the blank of Fig. 1 containing two additional rectangular panels F-F 1 and G-G' on either side of panel B which contains the ocular lenses 16.
  • Panel F-F' has an intermediate outwardly folding foldline 21 and panel G-G 1 has an intermediate outwardly folding foldline 22.
  • Panel F-F' is hingedly connected to panel B at inwardly folding foldline 20.
  • the assembly of the binocular from the blank of Fig. 7 is the same as for the blank of Fig. 1 except that the inner surfaces of panels F and F' are glued together and the inner surfaces of panels G and G' are glued together.
  • This forms two rectangular flaps which fold over the objective lenses when the binocular is folded flat. Due to the presence of these flaps, the foldlines adjacent panel B, namely foldlines 21 and 22, are now inwardly folding rather than outwardly folding (foldlines 3 and 4) as in Fig. 1.
  • the protruding corners of panels A', D, D', C, F, F", G and G' are rounded so as to form more comfort ⁇ able edges when handled or placed near the eyes.

Abstract

A one-piece blank (1) of thin semi-rigid material, such as cardboard, formed into a series of rectangular panels (A-A', B, C-C', D-D') hingedly connected at parallel foldlines (3, 4, 6) and two trapezoidal pairs of interlocking flaps (9, 9', 11, 11') may be easily assembled to form a foldable binocular. One panel contains a pair of objective lenses (18) and another panel contains a pair of ocular lenses (16). When folded, the objective lenses, and optionally the ocular lenses, are protected from scratches and smudges by a pair of rectangular flaps (A', C) formed by gluing certain panels (D, A' and D', C) together before assembly.

Description

FOLDABLE BINOCULAR AND BLANK THEREFOR
The invention relates to a foldable binocular and the blank for forming the binocular.
Several binoculars of this type are known in the prior art and are made of a relatively thin semi-rigid material, such as cardboard. When folded, they are light in weight and compact and suited for taking to sporting events, concerts etc.
One disadvantage of some of the prior art binoculars of this type is that, when folded, the lenses, especially the larger convex objective lenses, are unprotected and may be scratched when carried in pocket or purse. This disadvantage is overcome in-U.S. Patents 4,239,328 and 4,478,498 by providing a card¬ board sleeve or case in which to store the folded binocular when not in use. However, this solution is not entirely satisfactory "since the case must be stored when the binocular is being used.
In U.S. Patent 4,013,341, the lens elements of the binocular are retracted before folding in order to protect them from scratching. However, they must be pulled out by tabs when the binocular is unfolded. This is awkward.
In U.S. Patent 4,443,071, the lenses fold inwardly when the binocular is in a folded state and thus are protected. However, the arrangement is such that, when the binocular is to be used, the various side flaps must be folded individually to reassemble the binocular as one would assemble a box. Then the flaps must be unfolded in order to disassemble the binocular. This is very inconvenient. Several of the foldlines must be folded in reverse during assembly and disassembly, thus weakening the cardboard material.
It is an object of the invention to provide a foldable binocular wherein the lenses are protected when the binocular is in the folded state.
It is a further object to provide a foldable binocular is in the folded state.
It is a further object to provide a foldable binocular which may be partly disassembled to obtain access to the inner surfaces of the lenses for cleaning, if necessary. The invention relates to a -blank for a foldable binocular and the binocular formed therefrom. The blank comprises a substantially rectangular sheet of relatively thin semi-rigid material divided by parallel foldlines into a series of rect¬ angular panels comprising a first rectangular panel having an intermediate outwardly folding foldline parallel to its longi¬ tudinal axis; a second rectangular panel hingedly attached to the first rectangular panel along an outwardly folding foldline, and having a pair of spaced apertures for receiving a pair of ocular lenses and having a trapezoidal flap hingedly attached to each of its short sides along an outwardly folding foldline; a third rectangular panel hingedly attached to the second rect¬ angular panel along an outwardly folding foldline and having an intermediate outwardly folding foldline parallel to its longi¬ tudinal axis; and a fourth rectangular panel hingedly attached to said third rectangular panel along an outwardly folding fold- line and having a pair of inwardly folding foldlines defining a central rectangular panel having a second pair of spaced aper¬ tures for receiving a pair of objective lenses and a trapezoidal flap hingedly attached to each short side of the central rect¬ angular panel along an outwardly folding foldline; wherein the outer ends of the trapezoidal flaps on the second rectangular panel are capable of interlocking with the outer ends of the trapezoidal flaps on the fourth rectangular panel.
The ocular and objective lenses are preferably attached to the blank; by way of lens plates attached to the inner surface of the second rectangular panel and the central rectangular panel, respectively.
Since the objective lenses are convex, it is most important to protect them from scratching during storage. This is achieved during assembly of the binocular by gluing portions of the fourth rectangular panel to the first and third rectangular panels, respectively, to. form a pair of rectangular flaps. These flaps cover the objective lenses when the binocular is folded. However, the concave ocular lenses may also be protected in a similar manner by an additional pair of rectangular flaps which cover the ocular lenses when the binocular is in folded position. These flaps are formed by constructing the blank in such a way that there is an additional panel on each side of the ocular lens panel and which may be folded in half to form a rectangular flap.
The interlocking trapezoidal side flaps may be opened to provide access to the inner surfaces of the lenses for cleaning, if necessary. It is also desirable to attached a two-part fastening element to the center of the inner surfaces of the lens plates, one part on one plate and a mating part on the other plate, so that the folded binocular may be held securely in the folded position when not in use. Such a fastening element may be a two-part snap. or patches of VELCRO fabric.
Fig. 1 is an inner plan view of one embodiment of the binocular blank according to the invention.
Fig. 2 is a side elevation view of the binocular assembled from the blank of Fig. 1, in mid-extension, resting on the ocular lens panel.
Fig. 3 is a side elevation view of the assembled binocular in a more extended position than in Fig. 2.
Fig. 4 is a side elevation view of the assembled binocular of Fig. 2 in fully extended viewing position.
Fig. 5 is a side elevation view of the assembled binocular of Fig. 2 in folded position resting on the ocular lens panel.
Fig. 6 is a perspective view of the assembled binocular of Fig. 2.
Fig. 7 is an inner plan view of another embodiment of the binocular blank according to the invention.
Fig. 8 is a perspective view of the binocular assembled from the blank of Fig. 7.
Fig. 9 is a side elevation view of the binocular assembled from the blank of Fig. 7 in mid-extension.
Fig. 10 is a side elevation view of the assembled binocular of Fig. 9 in folded position.
In Fig. 1, the binocular blank 1 is divided into a series of rectangular panels A-A', B, C-C, D-D1, by parallel foldlines 3,4,6 which are outwardly folding. Panels A-A', C-C are further divided by outwardly folding foldlines 2 and 5, res- pectivel .
Panel D-D* is divided by inwardly folding foldlines 7,8 to define a panel E. Trapezoidal tabs 9,9' are hingedly attached at outwardly folding foldlines 10,10' to the short sides of panel B and trapezoidal tabs 11,11' are hingedly attached at outwardly folding foldlines 12,12* to the short sides of panel E. Ears 13,13' on tabs 9,9' can interlock with tabs 11,11' by in¬ sertion into slits 14,14', respectively. A lens plate 15 hold¬ ing a pair of ocular' lenses 16 is attached to the inner surface of panel B with the lenses aligned over a pair of apertures (not shown) in panel B. A lens plate 17 holding a pair of ob¬ jective lenses 18 is attached to the inner surface of panel E with the lenses aligned over a pair of apertures (not shown) in panel E.
To assemble the binocular, the blank is folded along fold- lines 2-8, the inner surface of section D' of panel D-D1 is glued to the inner surface of section A' of panel A-A'. Tabs 9,9' are interlocked with tabs 11,11', respectively, by insert¬ ing ears 13,13' into slits 14,14', respectively. The side ele¬ vation view of the assembled binocular is shown in Fig. 2 in mid-extension. Fig. 3 shows a more extended view obtained by exerting pressure on foldlines 2 and 5. The fully extended position is shown in Fig. 4. By exerting pressure on flap sec¬ tions D-D' and panel B, the binocular may be flattened for stor¬ age. As can be seen, the objective lenses are fully protected by flaps A' .and C when the binocular is folded. Patches of VELCROR fabric 23,23' are adhered to lens plates 15 and 17 in order to keep the binocular securely closed in the folded position. A perspective view of the fully extended binocular ready for use is shown in Fig. 6 with phantom lines to show the inner construction.
A second embodiment of the invention is shown in Fig. 7 which essentially shows the blank of Fig. 1 containing two additional rectangular panels F-F1 and G-G' on either side of panel B which contains the ocular lenses 16. Panel F-F' has an intermediate outwardly folding foldline 21 and panel G-G 1 has an intermediate outwardly folding foldline 22. Panel F-F' is hingedly connected to panel B at inwardly folding foldline 20.
The assembly of the binocular from the blank of Fig. 7 is the same as for the blank of Fig. 1 except that the inner surfaces of panels F and F' are glued together and the inner surfaces of panels G and G' are glued together. This forms two rectangular flaps which fold over the objective lenses when the binocular is folded flat. Due to the presence of these flaps, the foldlines adjacent panel B, namely foldlines 21 and 22, are now inwardly folding rather than outwardly folding (foldlines 3 and 4) as in Fig. 1. The protruding corners of panels A', D, D', C, F, F", G and G' are rounded so as to form more comfort¬ able edges when handled or placed near the eyes.
It is to be understood that various modifications of the above described embodiments may be made without departing from the essence of the invention as defined by the appended claims.

Claims

Claims :
1. A blank for a foldable binocular comprising a substantially rectangular sheet of relatively thin semi-rigid material divided by parallel foldlines into a series of rectangular panels com¬ prising a first rectangular panel having an intermediate outwardly folding foldline parallel to its longitudinal axis; a second rectangular panel hingedly attached to said first rectangular panel along a second outwardly folding foldline, said rectangular panel having a first pair of spaced apertures for receiving a pair of ocular lenses and having a trapezoidal flap hingedly attached to each of its short sides along third and fourth outwardly folding foldlines, respectively; a third rectangular panel hingedly attached to said second rectangular panel along a fifth outwardly folding foldline and having an intermediate sixth outwardly folding foldline parallel to its longitudinal axis; and a fourth rectangular panel hingedly attached to said third rectangular panel along a seventh outwardly folding foldline and having a pair of inwardly folding foldlines defining a central rectangular panel having a second pair of spaced apertures for receiving a pair of objective lenses and a second trapezoidal flap hingedly attached to each short side of said central rect¬ angular panel along eighth and ninth outwardly folding foldlines, respectively; wherein the outer end of each of said first trape¬ zoidal flaps on said second rectangular panel is capable of interlocking with the outer end of each second trapezoidal flap on said fourth rectangular panel.
2. The blank according to claim 1, further comprising a first lens plate bearing said pair of ocular lenses and attached to the inner surface of said second rectangular panel so that said ocular lenses are aligned with said first pair of apertures and a second lens plate bearing said pair of objective lenses and attached to the inner surface of said central rectangular panel so that said objective lenses are aligned with said second pair of apertures.
3. A foldable binocular formed from the blank of claim 2 by folding said blank along the respective foldlines, gluing the inner surfaces of said fourth rectangular panel on either side of said central rectangular panel to said first rectangular panel and to said third rectangular panel, respectively, thereby forming a pair of rectangular flaps on either side of said central rectangular panel, and interlocking said pairs of first and second trapezoidal flaps, whereby said rectangular flaps cover and pro¬ tect said objective lenses when the binocular is folded.
4. The blank according to claim 1, further comprising first and second rectangular panel portions hingedly attached on either longitudinal side of said second rectangular panel along third and fourth inwardly folding foldlines, respectively, said first and second rectangular panel portions being hingedly attached to said . first and third rectangular panels along said second and fifth outwardly folding foldlines, respectively, said first rectangular panel portion having a tenth outwardly folding foldline inter¬ mediate said first outwardly folding foldline and said third inwardly folding foldline, and said second rectangular panel portion having an eleventh outwardly folding foldline intermediate said fifth outwardly folding foldline and said fourth inwardly folding foldline, said tenth and eleventh outwardly folding foldlines being parallel to the longitudinal axis of said second rectangular panel.
5. The blank according to claim 4, further comprising a first lens plate bearing said pair of ocular lenses and attached to the inner surface of said second rectangular panel so that said ocular lenses are aligned with said first pair of apertures and a second lens plate bearing said pair of objective lenses and attached to the inner surface of said central rectangular panel so that said objective lenses are aligned with said second pair of apertures. i
6. A foldable binocular formed from the blank of claim 5, by folding said blank along the respective foldlines, gluing the inner surfaces of said fourth rectangular panel on either side of said central rectangular panel to said first rectangular panel and to said third rectangular panel, respectively, thereby forming a first pair of rectangular flaps on either side of said central rectangular panel; gluing the inner surfaces of said first and said second rectangular panel portions on either side of their respective intermediate foldlines, thereby forming a second pair of rectangular flaps on either side of said second rectangular panel; and interlocking said pairs of first and second trapezoidal flaps, whereby said first and second pairs of rectangular flaps cover and protect said objective lenses and said ocular lenses, respectively, when the binocular is folded.
7. The foldable binocular according to claim 3, further compris¬ ing mating fastening means attached to the inner surfaces of said lens plates.
8. The foldable binocular according to claim 6, further compris¬ ing mating fastening means attached to the inner surfaces of said lens plates..
PCT/US1987/000781 1986-04-07 1987-04-03 Foldable binocular and blank therefor WO1987005121A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US848,990 1986-04-07
US06/848,990 US4773747A (en) 1986-04-07 1986-04-07 Foldable binocular and blank therefor

Publications (1)

Publication Number Publication Date
WO1987005121A1 true WO1987005121A1 (en) 1987-08-27

Family

ID=25304800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/000781 WO1987005121A1 (en) 1986-04-07 1987-04-03 Foldable binocular and blank therefor

Country Status (10)

Country Link
US (1) US4773747A (en)
KR (1) KR870010416A (en)
AU (1) AU7288187A (en)
CA (1) CA1272403A (en)
ES (1) ES2002682A6 (en)
GR (1) GR870549B (en)
PH (1) PH24062A (en)
PT (1) PT84627B (en)
WO (1) WO1987005121A1 (en)
ZA (1) ZA872449B (en)

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FR2666663A1 (en) * 1990-09-06 1992-03-13 Zuili Didier Pocket binoculars

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US4964709A (en) * 1989-03-27 1990-10-23 Custom Chrome, Inc. Foldable binoculars with enclosed side walls
JPH0724860Y2 (en) * 1989-05-26 1995-06-05 シチズン時計株式会社 Portable display
US5552932A (en) * 1993-04-07 1996-09-03 Schultz; Cynthia A. Collapsible binocular
US5353151A (en) * 1993-04-07 1994-10-04 Schultz Cynthia A Collapsible binocular
DE9401063U1 (en) * 1994-01-22 1994-05-11 Henning Adam Foldable visual aid as a replacement for binoculars
US5557457A (en) * 1994-07-25 1996-09-17 Esperti; Anthony Folding binocular apparatus and binocular blank
US5986802A (en) * 1997-08-18 1999-11-16 Byers; Thomas L. Foldable binocular assembly
US6069735A (en) * 1998-12-10 2000-05-30 Murphy; George Joseph Viewer with enhanced wide field view
US6614604B1 (en) * 2000-04-10 2003-09-02 Jodi D. Budde Collapsible magnifying device, system and method
US6238053B1 (en) * 2000-05-09 2001-05-29 Wendy Gail Crocquet Protective assembly for an optical device
GB2367143A (en) * 2000-08-24 2002-03-27 Stephen Tashi Foldable cardboard binoculars
DE20200288U1 (en) * 2002-01-10 2002-03-21 Liedtke Joachim binoculars
US7222430B1 (en) * 2006-03-15 2007-05-29 Bandock Jr Joseph J Object locator sight
US10209769B2 (en) * 2015-05-27 2019-02-19 Google Llc Virtual reality headset
US10139637B2 (en) 2015-07-31 2018-11-27 Google Llc Integrated mobile device packaging and virtual reality headset
USD853231S1 (en) 2016-02-24 2019-07-09 Google Llc Combined smartphone package and virtual reality headset
US10750162B2 (en) 2017-09-11 2020-08-18 Google Llc Switchable virtual reality headset and augmented reality device

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Also Published As

Publication number Publication date
PT84627B (en) 1989-11-30
ZA872449B (en) 1988-06-29
US4773747A (en) 1988-09-27
PT84627A (en) 1987-05-01
GR870549B (en) 1987-06-10
CA1272403A (en) 1990-08-07
PH24062A (en) 1990-03-05
ES2002682A6 (en) 1988-09-16
AU7288187A (en) 1987-09-09
KR870010416A (en) 1987-11-30

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