Patent US3707743A successfully refreshed from Google Patents.
Patent US3701506A successfully refreshed from Google Patents.
US3701506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable furniture leg
Assignee: VILAS IND Ltd
•
Filing: 1971-06-28
•
Granted: 1972-10-31
•
Expires: 1991-06-28
Abstract
Abstract A leg structure formed by a pair of telescoping leg members, one of which is provided with a plurality of spaced apertures. A retractable detent is associated with the other leg member. Movable wedging means are associated with the retractable detent. Means are further provided to move the detent and simultaneously the wedging means to and from a locking position wherein the detent is received in one of the apertures and the wedging means forces the first member into frictional contact with the second member. In the open position the detent and wedge means are clear of the slot and the first member.
Inventors
- 👤 Marcel Favreau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:16
CPC Classifications
A; A47; A47B; A47B9/00; A47B9/08; A47B9/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A leg structure comprising a first leg member telescopically received in a second leg member, a plurality of spaced apertures in said first leg member, a retractable detent on said second leg member, movable wedging means associated with said retractable detent, means for moving said detent and simultaneously moving said wedging means to and from a locking position wherein said detent is received in one of said apertures, and said wedging means forcing said first member into frictional contact with said second member, and an open position wherein said detent and wedge means are clear of one of said apertures and said first member.
Claim 2
Dependent Claim
104 words
A leg structure comprising a first leg member telescopically received in a second leg member, a plurality of spaced apertures in said first leg member, a retractable detent on said second leg member, movable wedging means associated with said retractable detent, means for moving said detent and simultaneously moving said wedging means to and from a locking position wherein said detent is received in one of said apertures, and said wedging means forcing said first member into frictional contact with said second member, and an open position wherein said detent and wedge means are clear of one of said apertures and said first member.
Claim 3
Dependent Claim
57 words
A leg structure as defined in claim 1 wherein said detent is an end of a locking pin threaded in a body secured on the outer surface of said second leg member, said detent protruding through said surface to move in and out of engagement with an associated one of said apertures in said first leg member.
Claim 4
Dependent Claim
60 words
A leg structure as claimed in claim 2 wherein said wedging means is a shoulder formed around said locking pin a predetermined distance from the detent end thereof, said shoulder abutting against the surface of said first leg member adjacent said aperture through which said detent is received to force said first member into frictional contact with said second member.
Claim 5
Dependent Claim
65 words
A leg structure as claimed in claim 3 wherein said body retaining said locking pin is provided with a cavity in the lower portion thereof to receive said shoulder therein when said locking pin is moved away from its locking position, said shoulder having restricted movement within said cavity whereby said locking pin can be unthreaded only sufficiently to clear said detent of said apertures.
Claim 6
Dependent Claim
72 words
A leg structure as claimed in claim 2 wherein said locking pin is provided with a screw cap at the end thereof opposite said detent end to permit said locking pin to be threaded and unthreaded in said body whereby said detent moves in and out of one of said apertures and said wedging means applies sufficient pressure to force said first leg member into frictional contact with said second leg member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |