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US4620613A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-closing saw horse

Assignee: Individual
•
Filing: 1985-08-12
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Granted: 1986-11-04
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Expires: 2005-08-12
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Abstract

Abstract A folding and self-closing saw horse comprises a pair of trestle-like frames pivotally inconnected at their upper edges for opening and closing movement, and a folding brace assembly interconnecting the frames adjacent their lower edges for supporting the saw horse in an open position. The brace assembly comprises pivotally interconnected links which are connected to the respective frames by spring hinges which urge the frames toward one another when the brace assembly is folded. The saw horse may also include a table-like top piece connected by hinges to the respective frames.

Inventors

  • 👤 Carl N. Albertson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 07:54
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/06

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 135 words
A folding saw horse comprising a pair of trestle-like frames each having a transverse upper member, a transverse lower member, and diverging legs connected between the upper and lower members, hinge means pivotally interconnecting the upper members of the respective frames for folding movements to open and close the saw horse, and folding brace means connected between the respective lower members of the frames and located substantially centrally between the legs to support the saw horse in open position, wherein the brace means comprises a pair of links having a hinged elbow connection therebetween, and a spring hinge connected between each link and the respective lower frame member so that folding of the elbow connection from the open position of the saw horse causes the spring hinges to urge the frames toward a closed position.
Claim 2
Dependent Claim 135 words
A folding saw horse comprising a pair of trestle-like frames each having a transverse upper member, a transverse lower member, and diverging legs connected between the upper and lower members, hinge means pivotally interconnecting the upper members of the respective frames for folding movements to open and close the saw horse, and folding brace means connected between the respective lower members of the frames and located substantially centrally between the legs to support the saw horse in open position, wherein the brace means comprises a pair of links having a hinged elbow connection therebetween, and a spring hinge connected between each link and the respective lower frame member so that folding of the elbow connection from the open position of the saw horse causes the spring hinges to urge the frames toward a closed position.
Claim 3
Dependent Claim 26 words
The invention of claim 1 wherein the saw horse includes a table-like top piece connected by hinge means to the upper members of the respective frames.
Claim 4
Dependent Claim 45 words
The invention of claim 2 wherein upper edges of the respective frames are cut at an angle related to the degree of maximum opening of the saw horse so as to provide a horizontal support for the top piece when the saw horse is opened.
Claim 5
Dependent Claim 35 words
The invention of claim 2 wherein the top piece has a lengthwise extent substantially corresponding to the length of the frame bottoms so that when closed the saw horse can stand freely on its sides.
Claim 6
Dependent Claim 38 words
The invention of claim 1 wherein the upper members of the respective frames are connected to inner surfaces of the legs and the lower members of the respective frames are secured to the outer surfaces of the legs.
Claim 7
Dependent Claim 169 words
A folding saw horse comprising a pair of trestle-like frames, hinge means pivotally interconnecting the frames adjacent upper edges thereof for folding movements to open and close the saw horse, folding brace means interconnecting the frames adjacent lower edges thereof for supporting the saw horse in open position, the brace means comprising a pair of links having a hinged elbow connection therebetween, and a spring hinge connected between each link and the respective frame so that folding the elbow connection from the open position of the saw horse causes the spring hinges to urge the frames toward closed position, each frame comprising a transverse upper member, a transverse lower member, and diverging legs, the saw horse further including a table-like top piece, hinge means connecting the top piece to outer surfaces of each of the upper members of the frames, and the top piece having a length corresponding to a spacing between bottoms of the diverging legs to enable the saw horse, when folded, to stand on its sides.
Claim 8
Dependent Claim 169 words
A folding saw horse comprising a pair of trestle-like frames, hinge means pivotally interconnecting the frames adjacent upper edges thereof for folding movements to open and close the saw horse, folding brace means interconnecting the frames adjacent lower edges thereof for supporting the saw horse in open position, the brace means comprising a pair of links having a hinged elbow connection therebetween, and a spring hinge connected between each link and the respective frame so that folding the elbow connection from the open position of the saw horse causes the spring hinges to urge the frames toward closed position, each frame comprising a transverse upper member, a transverse lower member, and diverging legs, the saw horse further including a table-like top piece, hinge means connecting the top piece to outer surfaces of each of the upper members of the frames, and the top piece having a length corresponding to a spacing between bottoms of the diverging legs to enable the saw horse, when folded, to stand on its sides.

References Cited (Backward Citations)

US861583A Cited
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US2399861A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-11-03 1990-05-05 1990-11-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-11-03 1994-05-05 1994-11-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-11-03 1998-05-05 1998-11-04 $7700.00 Window Closed / Lapsed

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