Patent US4090586A successfully refreshed from Google Patents.
US4090586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder stabilizer
Assignee: Lee Raymond Organization Inc
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Filing: 1977-04-11
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Granted: 1978-05-23
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Expires: 1997-04-11
Abstract
Abstract A ladder fitted with a detachable foot section that can be fastened to either lower leg section of the ladder for extending the length of the fastened leg section. The detachable foot section is in the form of a circular housing threadably engaged to a screw that extends through both top and bottom ends of the housing, with projecting clip members externally fixed to the housing that engage shaped holes in the lower terminal section of the ladder leg.
Inventors
- 👤 Roy A. Pears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:54
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
266 words
A ladder fitted with means to detachably fasten a leg support unit to either lower leg section of the ladder, said leg support unit fitted with means to regulate the distance from the bottom end of the leg support unit to the points of fastening of the unit to the ladder leg, in which the leg support unit is formed of a housing threaded to a support rod that extends through the lower end of said housing, with the housing fitted with a pair of spaced shaped brackets, each projecting from a common side of the housing, and in which each lower leg section of the ladder is formed with a pair of spaced through holes, each said hole being of a size to fit about a said bracket, with each bracket extending from the housing by a length not less than the thickness of a ladder leg in the direction of the axis of a said hole, with a clip member rotatably mounted to the end of each bracket and of a size to extend beyond the profile of the bracket, with each said hole in a ladder leg section formed with at least one radial groove of a size to freely fit about the clip member of the bracket, such that the bracket may be fitted into a said hole when the clip member is aligned with the said groove, but that the said bracket may not then be disengaged from the ladder leg section when the clip member is rotated to a position in which it is not aligned with the said groove.
Claim 2
Dependent Claim
266 words
A ladder fitted with means to detachably fasten a leg support unit to either lower leg section of the ladder, said leg support unit fitted with means to regulate the distance from the bottom end of the leg support unit to the points of fastening of the unit to the ladder leg, in which the leg support unit is formed of a housing threaded to a support rod that extends through the lower end of said housing, with the housing fitted with a pair of spaced shaped brackets, each projecting from a common side of the housing, and in which each lower leg section of the ladder is formed with a pair of spaced through holes, each said hole being of a size to fit about a said bracket, with each bracket extending from the housing by a length not less than the thickness of a ladder leg in the direction of the axis of a said hole, with a clip member rotatably mounted to the end of each bracket and of a size to extend beyond the profile of the bracket, with each said hole in a ladder leg section formed with at least one radial groove of a size to freely fit about the clip member of the bracket, such that the bracket may be fitted into a said hole when the clip member is aligned with the said groove, but that the said bracket may not then be disengaged from the ladder leg section when the clip member is rotated to a position in which it is not aligned with the said groove.
Claim 3
Dependent Claim
50 words
The combination as recited in claim 1 in which each said hole is of a non-circular cross-section and each bracket is formed with a non-circular cross-section of a shape so as to engage a said non-circular hole in non-rotatable engagement, when a said bracket is engaged in a said hole.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |