Patent US4194592A successfully refreshed from Google Patents.
US4194592A
Expired / Lapsed
US
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Ladder stand-off
Assignee: Individual
•
Filing: 1978-02-23
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Granted: 1980-03-25
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Expires: 1998-02-23
Abstract
Abstract A ladder stand-off is provided wherein a pair of parallel braces are transversely connected to a pair of extending arms so that a ladder will pass through the space between the braces and arms and that, when the ladder is in use with the stand-off, each of the braces will bear against an opposite side of the ladder to support the upper end of the ladder.
Inventors
- 👤 Lewis L. Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:20
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/34; E06C1/345; E06C7/00; E06C7/48; E06C7/488
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
A stand-off for a ladder having a pair of stiles connected together by a plurality of rungs which comprises a pair of arms transversely connected by three braces each having a bearing surface substantially parallel to the others, said arms and braces forming an opening therebetween through which the ladder is positioned; two of braces being so arranged that when the ladder is in an upright position and supported at its upper end by the stand-off with the arms in contact with a supporting surface the bearing surfaces of these two braces will bear against opposite sides of the stiles and with the third brace so arranged as to restrict the movement of the stand-off when the ladder is unsupported by the stand-off.
Claim 2
Dependent Claim
123 words
A stand-off for a ladder having a pair of stiles connected together by a plurality of rungs which comprises a pair of arms transversely connected by three braces each having a bearing surface substantially parallel to the others, said arms and braces forming an opening therebetween through which the ladder is positioned; two of braces being so arranged that when the ladder is in an upright position and supported at its upper end by the stand-off with the arms in contact with a supporting surface the bearing surfaces of these two braces will bear against opposite sides of the stiles and with the third brace so arranged as to restrict the movement of the stand-off when the ladder is unsupported by the stand-off.
Claim 3
Dependent Claim
136 words
A stand-off for a ladder having a pair of stiles connected together by a plurality of rungs which comprises a pair of arms transversely connected by two braces each having a bearing surface substantially parallel to the other and by a bearing member comprising a flat plate having a length greater than the width of the ladder with the plane of said plate forming an angle with the plane defined by said bearing surfaces of less than 15 degrees; said arms and braces forming an opening therebetween through which the ladder is positioned and being so arranged that when the ladder is in an upright position and supported at its upper end by the stand-off with the bearing member in contact with a supporting surface said bearing surfaces will bear against opposite sides of the stiles.
Claim 4
Dependent Claim
136 words
A stand-off for a ladder having a pair of stiles connected together by a plurality of rungs which comprises a pair of arms transversely connected by two braces each having a bearing surface substantially parallel to the other and by a bearing member comprising a flat plate having a length greater than the width of the ladder with the plane of said plate forming an angle with the plane defined by said bearing surfaces of less than 15 degrees; said arms and braces forming an opening therebetween through which the ladder is positioned and being so arranged that when the ladder is in an upright position and supported at its upper end by the stand-off with the bearing member in contact with a supporting surface said bearing surfaces will bear against opposite sides of the stiles.
References Cited (Backward Citations)
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US2815160A
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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) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |