US4515243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sawhorse bracket
Assignee: Individual
•
Filing: 1983-09-09
•
Granted: 1985-05-07
•
Expires: 2003-09-09
Abstract
Abstract A leg assembly for a trestle comprising a channel of an internal width to receive a lumber beam, which is hinged to a plate bent at an obtuse angle to form a depending panel shaped as a trapezoid. Means are provided to secure lumber legs to and along the edges of the depending panel to form A-frames which diverge with respect to each other because the steel panels to which they are attached are disposed at obtuse angles to the beam.
Inventors
- 👤 Herbert E. Prior
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:43
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
A trestle comprising: a beam of lumber; a leg assembly secured near each end of said beam; each said leg assembly comprising: first and second rigid plates; said second plate being bent to form a depending portion at the outboard end thereof; a hinge connecting the inboard end of said second plate to said first plate; means securing said first plate to the underside of said lumber beam; said depending portion being shaped as a trapezoid; and a pair of lumber legs secured to and along the edges of said depending portion to depend therefrom.
Claim 2
Dependent Claim
95 words
A trestle comprising: a beam of lumber; a leg assembly secured near each end of said beam; each said leg assembly comprising: first and second rigid plates; said second plate being bent to form a depending portion at the outboard end thereof; a hinge connecting the inboard end of said second plate to said first plate; means securing said first plate to the underside of said lumber beam; said depending portion being shaped as a trapezoid; and a pair of lumber legs secured to and along the edges of said depending portion to depend therefrom.
Claim 3
Dependent Claim
30 words
The trestle defined by claim 1 wherein: said second plate is bent at an obtuse angle so that said depending portion and said legs slope outward from top to bottom.
Claim 4
Dependent Claim
22 words
The trestle defined by claim 1 including: a carrying handle secured to the underside of said lumber beam intermediate the ends thereof.
Claim 5
Dependent Claim
29 words
The trestle defined by claim 1 wherein: said first plate is the web portion of a channel of an inside width to accommodate a standard dimension of finished lumber.
Claim 6
Dependent Claim
84 words
A leg assembly for a trestle comprising: first and second rigid plates; said second plate being bent to form a depending portion at the outboard end thereof; a hinge connecting the inboard end of said second plate to said first plate; means for securing said first plate to the underside of a lumber beam; said depending portion being shaped as an equilateral trapezoid; and means for securing a pair of lumber legs to and along the edges of said depending portion to depend therefrom.
Claim 7
Dependent Claim
84 words
A leg assembly for a trestle comprising: first and second rigid plates; said second plate being bent to form a depending portion at the outboard end thereof; a hinge connecting the inboard end of said second plate to said first plate; means for securing said first plate to the underside of a lumber beam; said depending portion being shaped as an equilateral trapezoid; and means for securing a pair of lumber legs to and along the edges of said depending portion to depend therefrom.
Claim 8
Dependent Claim
28 words
The leg assembly defined by claim 5 wherein: said second plate is bent at an obtuse angle so that said depending portion slopes outward from top to bottom.
Claim 9
Dependent Claim
30 words
The leg assembly defined by claim 5 wherein: said first plate is the web portion of a channel of an inside width to accommodate a standard dimension of finished lumber.
References Cited (Backward Citations)
US292352A
Cited
US843118A
Cited
US1711328A
Cited
US1842012A
Cited
US2594464A
Cited
US3282379A
Cited
US3637045A
Cited
US3738451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |