Patent US4073367A successfully refreshed from Google Patents.
US4073367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level support guard
Assignee: UTILITY PRODUCTS Inc
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Filing: 1976-09-30
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Granted: 1978-02-14
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Expires: 1996-09-30
Abstract
Abstract In a ladder leveler of the type manually actuated through a clutch plate to free a leg extension for adjustibility purposes, a protective guard is applied to the clutch plate in a manner to preclude forces being accidently applied to the clutch plate when the leveler is in use to thereby avoid possibility of tragic accidents.
Inventors
- 👤 Allen C. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/42; E06C7/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
304 words
A leveler for a ladder or the like comprising a leg extension terminating at one end in a foot, a clutch assembly slidably mounted on said leg extension in normally clutching engagement therewith, means for manually releasing said clutch assembly from such clutching engagement with said leg extention to enable sliding adjustment of said clutch assembly with respect to said leg extension, means for attaching said clutch assembly to a side rail of a ladder, and means protecting said clutch assembly from accidental downward impact capable of releasing said clutch assembly from such clutch engagement with said leg extension, said clutch assembly including a bracket slidably mounted on said leg extension, said bracket comprising a mounting plate having a lateral wing on each end, said wings having aligned holes to receive said leg extension, at least one clutch plate anchored along an edge of said mounting plate and having a hole therethrough to loosely receive said leg extension, resiliant means exerting a lifting force against said plate to normally cause said plate to bite into said leg extension to preclude movement of said leg extension in one direction relative to said clutch assembly, said manual means for releasing said clutch assembly from such engagement with said leg extension comprising an exposed end of said clutch plate and one of said wings to enable one to apply a force to said clutch plate in opposition to said resiliant means, and said protecting means comprising a shroud loosely secured at one end to said mounting plate at a location substantially above the exposed end of said clutch plate and extending beyond said end at a rather steep angle to protect said clutch plate against accidental vertical impact forces sufficient to release said clutch plate and permit relative movement between said clutch assembly and said leg extensions.
Claim 2
Dependent Claim
304 words
A leveler for a ladder or the like comprising a leg extension terminating at one end in a foot, a clutch assembly slidably mounted on said leg extension in normally clutching engagement therewith, means for manually releasing said clutch assembly from such clutching engagement with said leg extention to enable sliding adjustment of said clutch assembly with respect to said leg extension, means for attaching said clutch assembly to a side rail of a ladder, and means protecting said clutch assembly from accidental downward impact capable of releasing said clutch assembly from such clutch engagement with said leg extension, said clutch assembly including a bracket slidably mounted on said leg extension, said bracket comprising a mounting plate having a lateral wing on each end, said wings having aligned holes to receive said leg extension, at least one clutch plate anchored along an edge of said mounting plate and having a hole therethrough to loosely receive said leg extension, resiliant means exerting a lifting force against said plate to normally cause said plate to bite into said leg extension to preclude movement of said leg extension in one direction relative to said clutch assembly, said manual means for releasing said clutch assembly from such engagement with said leg extension comprising an exposed end of said clutch plate and one of said wings to enable one to apply a force to said clutch plate in opposition to said resiliant means, and said protecting means comprising a shroud loosely secured at one end to said mounting plate at a location substantially above the exposed end of said clutch plate and extending beyond said end at a rather steep angle to protect said clutch plate against accidental vertical impact forces sufficient to release said clutch plate and permit relative movement between said clutch assembly and said leg extensions.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |