WO2008030409B1 - Positive auto blocking machine screw mechanism - Google Patents

Positive auto blocking machine screw mechanism

Info

Publication number
WO2008030409B1
WO2008030409B1 PCT/US2007/019253 US2007019253W WO2008030409B1 WO 2008030409 B1 WO2008030409 B1 WO 2008030409B1 US 2007019253 W US2007019253 W US 2007019253W WO 2008030409 B1 WO2008030409 B1 WO 2008030409B1
Authority
WO
WIPO (PCT)
Prior art keywords
threads
screw
work piece
hole
male
Prior art date
Application number
PCT/US2007/019253
Other languages
French (fr)
Other versions
WO2008030409A3 (en
WO2008030409A2 (en
Inventor
Harold J Goldbaum
Original Assignee
Harold J Goldbaum
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 Harold J Goldbaum filed Critical Harold J Goldbaum
Publication of WO2008030409A2 publication Critical patent/WO2008030409A2/en
Publication of WO2008030409A3 publication Critical patent/WO2008030409A3/en
Publication of WO2008030409B1 publication Critical patent/WO2008030409B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/08—Quickly-detachable or mountable nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut
    • F16B37/0807—Nuts engaged from the end of the bolt, e.g. axially slidable nuts
    • F16B37/085—Nuts engaged from the end of the bolt, e.g. axially slidable nuts with at least one unthreaded portion in both the nut and the bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/32—Locking by means of a pawl or pawl-like tongue

Abstract

A positive locking machine screw mechanism comprises a screw having a head and a body wherein the body includes male threads formed thereon wherein the threaded body has at least one longitudinal segment devoid of threads. A work piece defines a hole having female threads formed therein for receiving the screw and further defines in a portion of the hole, at least one longitudinally extending segment devoid of female threads. The longitudinal screw segment devoid of male threads and the longitudinal hole segment devoid of female threads are arranged such that the screw body is longitudinally received in the hole without engagement of the male screw threads with the female work piece threads.

Claims

AMENDED CLAIMSreceived by the International Bureau on 16 July 2008 (16.07.2008)
1. (Cancelled)
2. (Cancelled)
3. (Cancelled)
4. (Replaces one or more claims as filed)
A positive locking machine screw mechanism comprising: a screw having a head and a body including male threads formed thereon, said threaded body having at least one longitudinal segment devoid of threads and wherein said male threads generally cover one-half of a total surface of said body; a work piece defining a hole having female threads formed on a surface defined therein for receiving said screw, said threaded hole further defining at least one longitudinally extending segment devoid of said female threads and wherein said female threads generally cover one- half of a total of said surface; wherein: said longitudinal screw segment devoid of male threads and said longitudinal hole segment devoid of female threads are arranged such, that said screw body is longitudinally received in said hole without engagement of said male screw threads with said work piece female threads; multiple ones of said male screw threads and multiple ones of said work piece female threads engage one with the other substantially simultaneously upon rotation of said screw with respect to said work piece; less than one full rotation of said screw within said hole results in maximum engagement of said male screw threads with said work piece female threads; and a major diameter of said male screw threads is greater than a major diameter of said work piece female threads thereby causing a factional interference between said male and female threads for securely retaining said screw in said work piece.
5. (Replaces one or more claims as filed)
A positive locking machine screw mechanism comprising: a screw having a head and a body including male threads formed thereon, said threaded body having at least one longitudinal segment devoid of threads and wherein said male threads generally cover one-half of a total surface of said body; a work piece defining a hole having female threads formed on a surface defined therein for receiving said screw, said threaded hole further defining at least one longitudinally extending segment devoid of said female threads and wherein said female threads generally cover one- half of a total of said surface; wherein: said longitudinal screw segment devoid of male threads and said longitudinal hole segment devoid of female threads are arranged such that said screw body is longitudinally received in said hole without engagement of said male screw threads with said work piece female threads; multiple ones of said male screw threads and multiple ones of said work piece female threads engage one with the other substantially simultaneously upon rotation of said screw with respect to said work piece; less than one full rotation of said screw within said hole results in maximum engagement of said male screw threads with said work piece female threads; and a width of an individual male thread of said screw is greater than an individual thread of said work piece female threads such that said male screw thread is interferingly received in said work piece female thread thereby causing a frictional interference between said male and female threads for securely retaining said screw in said work piece.
6. (Cancelled)
7. (Cancelled)
8. (Cancelled)
9. (Cancelled)
10. (Cancelled)
11. (Cancelled)
12. (Cancelled)
13. (Cancelled)
14. (Cancelled)
15. (Cancelled)
16. (Replaces one or more claims as filed)
A positive locking machine screw mechanism comprising: a screw having a head and a body including male threads formed thereon, said threaded body defining a number of circumferentially spaced longitudinally extending body segments therearound wherein alternating ones of said body segments are devoid of threads and define thereon a partial outer cylindrical surface and wherein said male threads generally cover one- half of a total surface of said body; a work piece defining a hole having female threads formed on a surface defined therein for receiving said screw, said threaded hole further defining a like number of longitudinally extending hole segments wherein alternating ones of said bole segments are devoid of threads and define a partial inner cylindrical surface on an inside of said hole and wherein said female threads generally cover one-half of a total of said surface; wherein: said longitudinal screw body segments devoid of male threads and said longitudinal hole segments devoid of female threads are arranged such that said screw body is longitudinally received in said hole without engagement of said male screw threads with said female work piece threads; said outer cylindrical surface has a diameter marginally smaller than a minor diameter of said female threads in said work piece hole, and wherein said partial inner cylindrical surface on said inside of said work piece hole has a diameter marginally greater than a major diameter of said male threads of said screw; said longitudinal segments of said screw and said work piece hole are of substantially equal angular width, said angular width of said screw and work piece hole segments void of threads are maiginatty greater than said angular width of said threaded segments of said screw and said work piece hole; multiple ones of said male screw threads and multiple ones of said work piece female threads engage substantially simultaneously upon rotation of said screw with respect to said work piece; an angular rotation of said screw within said work piece hole substantially equal to said angular width of said longitudinal segments results in maximum engagement of said male screw threads with said female work piece threads; and a major diameter of said male screw threads is greater than a major diameter of said work piece female threads thereby causing a factional interference between said male and female threads for securely retaining said screw in said work piece.
17, (Replaces one or more claims as filed)
A positive locking machine screw mechanism comprising: a screw having a head and a body including male threads formed thereon, said threaded body defining a number of circumferentially spaced longitudinally extending body segments therearound wherein alternating ones of said body segments are devoid of threads and define thereon a partial outer cylindrical surface and wherein said male threads generally cover one- half of a total surface of said body; a work piece defining a hole having female threads formed on a surface defined therein for receiving said screw, said threaded hole further defining a like number of longitudinally extending hole segments wherein alternating ones of said hole segments are devoid of threads and define a partial inner cylindrical surface on an inside of said hole and wherein said female threads generally cover one-half of a total of said surface; wherein: said longitudinal screw body segments devoid of male threads and said longitudinal hole segments devoid of female threads are arranged such that said screw body is longitudinally received in said hole without engagement of said male screw threads with said female work piece threads; said outer cylindrical surface has a diameter marginally smaller than a minor diameter of said female threads in said work piece hole, and wherein said partial inner cylindrical surface on said inside of said work piece hole has a diameter marginally greater than a major diameter of said male threads of said screw; said longitudinal segments of said screw and said work piece hole are of substantially equal angular width; said angular width of said screw and work piece hole segments void of threads are marginally greater than said angular width of said threaded segments of said screw and said work piece hole; multiple ones of said male screw threads and multiple ones of said work piece female threads engage substantially simultaneously upon rotation, of said screw with respect to said work piece; an angular rotation of said screw within said work piece hole substantially equal to said angular width of said longitudinal segments results in maximum engagement of said male screw threads with said female work piece threads; and a width of an individual male thread of said screw is greater than an individual thread of said work piece female threads such that said male screw thread is interferingly received in said work piece female thread thereby causing a frictional interference between said male and female threads for securely retaining said screw in said work piece.
18. (Replaces one or more claims as filed)
The positive locking machine screw mechanism according to claim 5 wherein at least one of said male screw threads includes a boss formed thereon, and at least a corresponding one of said work piece female threads defines a depression therein for receiving said boss upon maximum engagement of said threads one with the other.
19. (Replaces one or more claims as filed)
The positive locking machine screw mechanism according to claim 5 wherein a bottom of said screw head includes a locking protrusion extending therefrom, and a top of said work piece upon which said screw head bears defines a recess therein for receiving said locking protrusion.
20. (Original)
The positive locking machine screw mechanism according to claim 19 wherein said locking protrusion is a radially extending bar, and said work piece recess Ls a groove extending radially from said threaded hole, and further wherein radially extending locking bar and said work piece groove are positionally arranged such that said locking bar engages said work piece groove upon full engagement of said male screw threads with said work piece female threads.
PCT/US2007/019253 2006-09-05 2007-09-04 Positive auto blocking machine screw mechanism WO2008030409A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/515,644 2006-09-05
US11/515,644 US7437976B1 (en) 2006-09-05 2006-09-05 Positive auto-blocking nut ensemble and torqueing tool

Publications (3)

Publication Number Publication Date
WO2008030409A2 WO2008030409A2 (en) 2008-03-13
WO2008030409A3 WO2008030409A3 (en) 2008-09-04
WO2008030409B1 true WO2008030409B1 (en) 2008-10-30

Family

ID=39157778

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/019253 WO2008030409A2 (en) 2006-09-05 2007-09-04 Positive auto blocking machine screw mechanism

Country Status (2)

Country Link
US (1) US7437976B1 (en)
WO (1) WO2008030409A2 (en)

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Also Published As

Publication number Publication date
WO2008030409A3 (en) 2008-09-04
WO2008030409A2 (en) 2008-03-13
US7437976B1 (en) 2008-10-21

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