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US3715012A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety ladder brace

Assignee: Individual
•
Filing: 1971-09-27
•
Granted: 1973-02-06
•
Expires: 1991-09-27
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Abstract

Abstract A safety device for supporting an upper end portion of a ladder having a pair of side rails joined by rungs wherein the safety device includes a body member having a pair of diverging arms forming a generally V-shape, each having an extension with the extensions being in substantially normal planes and a flange extending outwardly from a free end of each of the extensions with the flanges being substantially coplanar and a wing extending outwardly from each of the diverging arms and having a portion engageable with a respective side rail of the ladder and a clamping member on each wing for securing the respective side rails of the ladder thereto.

Inventors

  • 👤 A Perry

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 19:36
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48; E06C7/482

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 95 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. A body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes.
Claim 2
Dependent Claim 95 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. A body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes.
Claim 3
Dependent Claim 95 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. A body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes.
Claim 4
Dependent Claim 95 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. A body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes.
Claim 5
Dependent Claim 28 words
A safety device as set forth in claim 1 including a flange extending outwardly from a free end of each of said extensions, said flanges being substantially coplanar.
Claim 6
Dependent Claim 40 words
A safety device for ladders as set forth in claim 2 including resilient material mounted on surfaces of said diverging arms and extensions and flanges and positioned for engagement with respective surfaces to support an upper portion of the ladder.
Claim 7
Dependent Claim 152 words
A safety device for ladders having a pair of laterally spaced side rails joined by spaced rungs, said safety device comprising: a. a body member having a pair of diverging arms forming a generally V-shape having substantially coplanar upper edges; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder said rail engaging portions of said wings being positioned in a plane inclined relative to the plane of the upper edges of said arms; c. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes; d. a flange extending outwardly from a free end of each of said extensions, said flanges being substantially coplanar; and e. means on each of said wings for securing said respective rails of the ladder thereto.
Claim 8
Dependent Claim 152 words
A safety device for ladders having a pair of laterally spaced side rails joined by spaced rungs, said safety device comprising: a. a body member having a pair of diverging arms forming a generally V-shape having substantially coplanar upper edges; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder said rail engaging portions of said wings being positioned in a plane inclined relative to the plane of the upper edges of said arms; c. an extension for each of said pair of diverging arms, said extensions extending from said respective arms at an angle to position said extensions in substantially normal planes; d. a flange extending outwardly from a free end of each of said extensions, said flanges being substantially coplanar; and e. means on each of said wings for securing said respective rails of the ladder thereto.
Claim 9
Dependent Claim 88 words
A safety device for ladders as set forth in claim 4 including: a. resilient material mounted on facing surfaces of said arms and engageable with the surface to support an upper end portion of the ladder; b. resilient material mounted on said extensions of said arms and engageable with respective surfaces in substantially normal planes to support an upper end portion of the ladder; and c. resilient material mounted on said flanges and engageable with a substantially planar surface to support an upper end portion of the ladder.
Claim 10
Dependent Claim 104 words
A safety device for ladders as set forth in claim 5 wherein: a. said arms of said body member have respective upper edges adapted to be positioned in a plane substantially parallel with a surface supporting a lower end portion of the ladder; b. said wings each have a portion inclined relative to the plane of said upper edges whereby the ladder may be inclined with the safety device being in a substantially horizontal plane; c. said diverging arms of said body member are planar members; and d. said diverging arms are positioned to define an included angle therebetween of less than 60* .
Claim 11
Dependent Claim 141 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. a body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. said diverging arms of said body member being planar members; e. said diverging arms being positioned to define an included angle therebetween of less than about 60*; f. said diverging arms having sufficient resiliency to permit a generally rounded object to effect separation of said arms when a ladder having the body member thereon is moved toward and into engagement with a generally rounded object to thereby substantially wedge same between the diverging arms.
Claim 12
Dependent Claim 141 words
A safety device for ladders having a pair of spaced side rails, said safety device comprising: a. a body member having a pair of diverging arms; b. a wing extending outwardly from each of said arms and having a portion engageable by a respective side rail of a ladder; c. means on each of said wings for securing said respective side rail of the ladder thereto; d. said diverging arms of said body member being planar members; e. said diverging arms being positioned to define an included angle therebetween of less than about 60*; f. said diverging arms having sufficient resiliency to permit a generally rounded object to effect separation of said arms when a ladder having the body member thereon is moved toward and into engagement with a generally rounded object to thereby substantially wedge same between the diverging arms.

References Cited (Backward Citations)

US1096903A Cited
US2592006A Cited
US2808975A Cited
US2903086A Cited
FR1193183A Cited
US3028929A Cited
US3072218A Cited
US3318415A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-06 1976-08-07 1977-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-06 1980-08-07 1981-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-06 1984-08-07 1985-02-06 $7700.00 Window Closed / Lapsed

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