CA1183317A - Stair nosing - Google Patents

Stair nosing

Info

Publication number
CA1183317A
CA1183317A CA000417977A CA417977A CA1183317A CA 1183317 A CA1183317 A CA 1183317A CA 000417977 A CA000417977 A CA 000417977A CA 417977 A CA417977 A CA 417977A CA 1183317 A CA1183317 A CA 1183317A
Authority
CA
Canada
Prior art keywords
flat tire
skid
stair
tire frame
rib
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA000417977A
Other languages
French (fr)
Inventor
Hiromitsu Naka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naka Technical Laboratory Co Ltd
Original Assignee
Naka Technical Laboratory Co Ltd
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 Naka Technical Laboratory Co Ltd filed Critical Naka Technical Laboratory Co Ltd
Application granted granted Critical
Publication of CA1183317A publication Critical patent/CA1183317A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02Stairways; Layouts thereof
    • E04F11/104Treads
    • E04F11/16Surfaces thereof; Protecting means for edges or corners thereof
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02Stairways; Layouts thereof
    • E04F11/104Treads
    • E04F11/16Surfaces thereof; Protecting means for edges or corners thereof
    • E04F11/163Protecting means for edges or corners
    • E04F11/166Protecting means for edges or corners with means for fixing a separate edging strip

Abstract

ABSTRACT OF THE DISCLOSURE

A stair nosing is constituted by a flat tire frame for lying on a tread of a stair, a non-skid flat tire adapted to be snappedly engaged to the flat tire frame and a tongue-shaped protector for the engaging portion of the flat tire frame and the non skid flat tire. The non-skid flat tire comprises a connecting plate of rigid synthetic resin having the flange with rib at one edge and a non-skid flat tread of flexible synthetic resin integrally formed on the upper surface of the connecting plate.
The tongue-shaped protector is integrally formed with the non-skid flat tread so as to cover the engaging portion spacedly located from a riser of the stair when the non-skid flat tire is secured to the flat tire frame.

Description

~333~
BACKGROUND OF THE INVENTION

This invention relates to a stair nosing installed on a stair, especially to an improved stair nosing comprising a flat tire frame secured on the stair and a non-skid flat tire engaged snappedly to the flat tire frame, The inventor has proposed such stair nosing, In the stair nosing, an engaging portion of the flat tire frame and the non~skid flat tire is located adjacent to the nose of the stair on the riser. Th~refore the engaging portion may be broken and disengaged by Eoot pressur* or impact of shoe. Since dust is plugged in the engaging portion, such stair nosing is undesirable.

5~A~ o~ vr~

Therefore~ one object of the present invention is to provide a stair nosing which protects an engaging portion of snappedly engaged flat tire frame and non-skid flat tire from foot pressure or impact of shoe, avoids the damage or breakage of the engaging portion by foot pressure or impact of shoe, prevents the disengagement of the engaging portion, and protects the engaging portion from dust, further prevents the corruption caused by dust.
Another object of the present invention is to provide a stair nosing which heightens the cushioning and non-skid effects, protects the engaging portion by a ~3~

cushioning means without being obstructive to going up and down the stairs, and softens the foot pressure or impact of shoe to the engaging portion~
A problem of the invention is to remedy the above drawbacks. It solves the problem that a non-skid flat tire comprises a connecting plate of rigid synthetic resin snap~edly engaged to a flat tire frame and a non-skid tread of flexible synthetic resin integrally formed on the upper surface of the connecting plate, and a tongue-shaped pro ector of flexibl~ synthetic resin is integrally formed to one edge of the non-skid tread so as to cover the engaging portion of the non-skid flat tire and the flat tire frame when the non-skid flat tire is snappedly engaged to the flat tire frame. Further it solves effectively the problem that the tongue-shaped protector covers the engaging portion so as to form a clearance for the engaging portion.

BRIEF DESCRIPTION OF I'HE DRAWINGS

The above and other objects and attendant advantages of the present invention will be more readily apparent to those skilled in the art from the following description when read in connection with the accompanying drawings, in which:
Fig. 1 is a cross-sectional view of a preferred embodiment of stair nosing of the invention showing the stair nosing installed on a stair;

33~'7 Fig. 2 is an enlarged cross sectional view of the stair nosing as shown in Fig, 1;
Fig. 3 is a cross-sectional view of a modified embodiment of the stair nosing of the present invention;
and Fig. 4 is a cross-sectional view of a modified embodiment of the stair nosing in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will be now described referring to the accompanying drawings and more particularly, to Figs. 1 and 2 in which the first embodiment of the stair n~S/co~structed in accordance with the present .invention is shown.
Figs. 1 and 2 show a stair nosing 10 of the invention, installed on a stair of a building~
The stair nosing 10 comprises a flat tire frame 11 secured on a tread of the stair, a non-skid flat tire 12 firmly secured to the flat tire frame 11 by snapped engagement, and a tongue-shaped protector 15 for covering the engaging portion o the flat tire frame 11 and the non-skid flat tire 12.
The flat tire frame 11 is made by extrusion of aluminum alloy so as to form a hook 16 at one edge, an inturned bead 17 at the other edge and a rib 18 ~333~'7 longitudinally extended and projected thereon~
~ he hook 16 has L shaped cross-section, comprising a riser portion 19 bent downwardly from one edge of the flat tire frame 11 so as to project on the under surface of the flat tire frame 11, may be positioned on the riser 62 of the stair 60, a hook angle portion 20 be~llt upwardly from the lower edge of the riser portion 19 so as to be positioned at the front side of the riser portion 19, and a hook lip 21 bent toward the riser portion 19 from the upper edge of the hook angle portion 20.
The inturned bead 17 has a groove 22 in order to receive the edge of the non-skid flat tire 12.
The rib 18 has an abutting surface 23 inclined toward the inturned bead 17O
The non-skid flat tire 12 comprises a connecting plate 13 of rigid synthetic resin and a non-skid flat tread 14 of flexible synthetic resin integrally formed on the upper surface of the connecting plate 13.
The connecting plate 13 has a flange 24 with rib 25 at one edge. The other edge of the connecting plate 13 may be inserted in the inturned bead 17.
The flange 24 with rib ~5 is bent downwardly from one edge of the connecting plate 13 so as to project on the under surface of the connecting plate 13. The rib 25 projected toward the front side of the connecting plate 13 can be snappedly engaged in the hook 16. Naturally, the flange 24 is formed at the edge of the connecting plate _ 5 _ 33~'7 13 in order to engage snappedly and smoothly into the hook lip 21 when the rib 25 and the hook lip 21 are snappedly engaged each other, in other words, the flange 24 is formed at the edge of the connecting plate 13 so as to be spacedly located from the riser portion 19 of the hook 16 when the non-skid flat tire 12 is fixmly secured to the flat tire frame 11.
The connecting plate 13 has a longitudinal groove 26 on the under surface thereon, for receiving the rib 18, complementary to the abutting surface 23 of the rib 18 when the non-skid flat tire 12 is firmly secured to the flat tire frame 11.
The non-skid flat tread 14 is made by extrusion of flexible synthetic resin so as to form the cross section as shown in Fig. 1. The non-skid flat tread 14 has a plurality of longitudinal hollow portions 27, 28, 29 properly spaced at the flange side for excellent Eeel as well as excellent cushioning effect. Also, the non skid flat tread 14 has a non-skid upper surface 30 in order to heiyhten non-skid effect.
The tongue-shaped protector 15 is integrally formed with the non-skid flat tread 14 of flexible synthetic resin. The tongue-shaped protector 15 is downwardly extended from one edge, in other words, the front edge of the non-skid flat tread 14 so as to cov~r closely the enyaging portion of the hook 16 and the rib 25 when the non-skid flat tire 12 is secured to the flat tire frame 3~
1 1 .
The shape of the tongue-shaped protector 15, as shown in Fig. 2, is predetermined so as to provide a clearance 31 for the engaginq portion when the non-skid flat tire 12 is secured to the flat tire frame 11.
Since the shape is predetermined like this, the tongue-shaped protector 15 protects the en~aging portion from dust and prevents the corruption caused by dust.
Since the tongue-shaped protector 15 has the shape so as to provide the clearance, the flange 24 with rib of the non-skid flat tire 12 can be easily engaged snappedly in the hook 16 of the flat tire frame 11, the elastic deformation of the non-skid f:Lat tread 14 may be absorbed by the clearance 31 as applying foot pressure to the front edge of the non-skid flat tread 14, the foot prPssure may not transmitted to the engaging portion of the flange 24 and the hook 16, whe.reby the clearance 31 prevents the disengagement oE t:he flange 24 and the hook 16.
In installation of the stair nosing 10 constructed as the above-menti.oned, the stair nosing 10 has been previously cut in length suitable for the width of the stair 60. The flat tire frame 11 and the non-skid flat tire 12 are separated each other, an adhesive agent is applied on the under surface of the flat tire frame 11.
Then the flat tire frame 11 is set on the tread 61 of the stair 60 so as to be hooked to the riser 62 of the stair 60, and the flat tire frame 11 is pressed on the ;3 3~
tread 61.
After the flat tire frame 11 is secured on the treàd 61 like this, the rear edge of the connecting plate 13 is inserted into the groove 22 of the inturned bead 17, and the flange 24 at the front edge of the connecting plate 13 is pressed to the hook 16 so as to engage the rib 25 snappedly in the lip 21 of the hook 16. Therefore the non-skid flat tread 14 is firmly secured to the flat tire frame 11~
Thus, the stair nosing 10 can be easily and rapidly installed on the stair 60. Also, the stair nosing 10 may be nailed on the stair 60 without using the adhesive agent, After the stair nosing 10 is installed on the stair 60, a screw driver may be used in order to remove the non-skid flat tire 12 from the flat tire frame 11.
When the flange 24 is pressed toward the riser 62 by the screw driver, the :rib 25 is disengaged from the lip 21 of the hook 16. Thus, the non-skid flat tire 12 can be easily and rapidly removed from the flat tire frame 11.
The flat tire frame 11 of -the stair nosing 10 is above-described as made of aluminum alloy, but the flat tire frame 11 may be made of stainless steel, rigid synthetic resin, and so on.
Figs/ 3 and 4 show modified embodiments 40 and 50 of the invention. In a stair nosing 40 as shown in Fig.
3, a lip 42 of a hook 41 is modified of the lip 21 of the 33~7 above-described stair nosiny 10. The llp 42 of the hook 41 has semi~circular cross-section.
In a stair nosing 50 as shown in Fig, 4, a tongue-shaped protector 51 is modified of the tongue-shaped protector 15 of the above-described stair nosing 10. The tongue-shaped protector 51 is longer than that oE the stair nosing 10 so as to cover the angle portion 20 of the hook 16. Therefore the tongue-shaped protector 51 may protect the hook 16 from foot pressure or impact of shoe, and heighten cushioning effect.
In the stair nosings 40 and 50 as shown in Figs.
3 and 4, non skid flat treads 43 and 52 are modified of the non-skid flat tread 14 of the above-described stair nosing 10.
While various embodiments of the invention have been shown and described in detail, it will be understood that these are for the purpose of illustration purpose only and are not to be taken as a definition of the scope of the invention, reference being had for this purpose to the appended claims.

Claims (5)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A stair nosing comprising a flat tire frame having a hook at one edge and an inturned bead at the other edge, for lying on a tread of a stair so as to position the hook on a riser of the stair, and a non-skid flat tire having a flange with rib at one edge, secured to the flat tire frame so as to insert the other edge of the non-skid flat tire in the inturned bead and engage snappedly the rib into the hook, charac-terized in that the non-skid flat tire comprises a connecting plate of rigid synthetic resin having the flange with rib at one edge and a non-skid flat tread of flexible synthetic resin integrally formed on the upper surface of the connecting plate, and a tongue-shaped protector is integrally formed with the non-skid flat tread so as to cover the engaging portion of the hook and the rib when the non-skid flat tire is secured to the flat tire frame.
2. A stair nosing according to claim 1, characterized in that the tongue-shaped protector is formed to provide clearance for the engaging portion when the non-skid flat tire is secured to the flat tire frame.
3. A stair nosing according to claim 1, characterized in that the flange is spacedly located from a riser portion of the hook when the non-skid flat tire is secured to the flat tire frame.
4. A stair nosing according to claim 1, further comprising a rib projected longitudinally on the upper surface of the flat tire frame, having an abutting surface inclined toward the inturned bead, and a groove formed longitudinally on the lower surface of the connecting plate so as to receive the rib.
5. A stair nosing according to claim 1, further comprising a longitudinal hollow portion formed in the non-skid tread at the flange side.
CA000417977A 1981-12-18 1982-12-17 Stair nosing Expired CA1183317A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP188074/81 1981-12-18
JP1981188074U JPS5893124U (en) 1981-12-18 1981-12-18 anti-slip for buildings

Publications (1)

Publication Number Publication Date
CA1183317A true CA1183317A (en) 1985-03-05

Family

ID=16217242

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000417977A Expired CA1183317A (en) 1981-12-18 1982-12-17 Stair nosing

Country Status (8)

Country Link
US (1) US4486987A (en)
EP (1) EP0082482B1 (en)
JP (1) JPS5893124U (en)
KR (1) KR910001454B1 (en)
AU (1) AU558342B2 (en)
BR (1) BR8207353A (en)
CA (1) CA1183317A (en)
DE (1) DE3265668D1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0356586Y2 (en) * 1985-01-23 1991-12-19
JPH0430269Y2 (en) * 1986-04-10 1992-07-22
GB8624653D0 (en) * 1986-10-14 1986-11-19 Ferodo Ltd Stairtread facings
DE3701415A1 (en) * 1987-01-20 1988-07-28 Werner Schlueter STRIP WITH Z-SHAPED CROSS-SECTION FOR FINISHING CERAMIC PANELS ON A STAGE OR THE LIKE
US5052539A (en) * 1989-10-24 1991-10-01 Melvin Simon & Associates, Inc. Circular escalator
US5806253A (en) * 1996-10-31 1998-09-15 Premark Rwp Holdings, Inc. Stair nosing for laminate flooring
US5787674A (en) * 1996-11-04 1998-08-04 Premark Rwp Holdings, Inc. Method of installing laminate covered stair nosing
CA2192409C (en) * 1996-12-09 1999-07-13 Glenn R. Elsasser Elongated member of extruded plastic suitable for flooring, decking, seating and like uses
WO1999058785A1 (en) * 1998-05-12 1999-11-18 Suntony Enterprise Co. Safety stepping strip for use on a stairway
US20090145059A1 (en) * 2007-12-07 2009-06-11 Kay Ronald J Safety nosing components and manufacturing methods
US8534009B2 (en) * 2007-12-07 2013-09-17 Ronald J. Kay Safety nosing components and manufacturing methods
US8850757B2 (en) 2011-02-10 2014-10-07 William Gardner Stair nosing assembly
US11391418B2 (en) 2019-12-30 2022-07-19 William Gardner Photoluminous marker with transparent cover

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH152169A (en) * 1931-01-10 1932-01-31 Schmidt Julius Exchangeable stair rail.
FR709700A (en) * 1931-01-20 1931-08-12 Julius Schmidt Exchangeable plate for staircase or similar
DE957345C (en) * 1952-03-30 1957-01-31 Oscar Braun Multi-part protective strip, especially for stair nosings
US3835481A (en) * 1972-12-20 1974-09-17 Quality Pool Supply Co Swimming pool coping
US4001991A (en) * 1976-01-02 1977-01-11 Balco, Inc. Stair nosing structure
DE2965870D1 (en) * 1978-11-13 1983-08-18 Naka Tech Lab Stair mat
EP0014571A3 (en) * 1979-01-31 1980-12-10 Kabushiki Kaisha Naka Gijutsu Kenkyusho Stair mat
DE2933158A1 (en) * 1979-08-16 1981-02-26 Helmut Kuppinger Composite staircase step edge cladding profile - has non-slip shock absorbing batten form locked to rigid frame piece

Also Published As

Publication number Publication date
EP0082482A1 (en) 1983-06-29
JPS5893124U (en) 1983-06-24
BR8207353A (en) 1983-10-18
KR910001454B1 (en) 1991-03-07
AU558342B2 (en) 1987-01-29
KR840002945A (en) 1984-07-21
DE3265668D1 (en) 1985-09-26
EP0082482B1 (en) 1985-08-21
US4486987A (en) 1984-12-11
AU9162082A (en) 1983-06-23

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Legal Events

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MKEX Expiry