US3866964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet stretcher with telescoping tubing locking device
Assignee: ROBERT CONSOLIDATED INDUSTRIES Inc
•
Filing: 1973-12-26
•
Granted: 1975-02-18
•
Expires: 1993-12-26
Abstract
Abstract A carpet stretcher having a pair of telescoping tubings, with locking means between the tubings permitting them to be adjusted longitudinally with respect to each other to an infinite number of positions and locked in any desired such position, with trigger means outside said tubings and manually operable to release said locking means to permit free relative longitudinal movement between the tubings.
Inventors
- 👤 Earle F Prater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:21
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; A; A47; A47G; A47G27/00; A47G27/04; A47G27/0487; A47G27/0493; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066; Y10T403/7071
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
198 words
In an assembly of telescoping tubular members having releasable locking means therebetween, the combination of: an outer tubular member; an inner tubular member concentric in said outer tubular member; a pair of shoe members in said outer tubular member and radially movable therein into and out of engagement with the inNer wall of said outer tubular member; wedge means extending between said shoe members and longitudinally movable with respect thereto in one direction to move said shoe members radially outwardly into locking engagement with said outer tubular member and in an opposite direction to permit said shoe members to move radially inwardly out of locking engagement with said outer tubular member; connecting means connecting said wedge means and said inner tubular member so that longitudinal movement of said inner tubular member in said one direction similarly moves said wedge means in said one direction and movement of said inner tubular member in said opposite direction permits movement of said wedge means in said opposite direction; and release means connected to said shoe members, independent of said connecting means and movable to move said shoe members in said one direction and out of locking engagement with said wedge means.
Claim 2
Dependent Claim
198 words
In an assembly of telescoping tubular members having releasable locking means therebetween, the combination of: an outer tubular member; an inner tubular member concentric in said outer tubular member; a pair of shoe members in said outer tubular member and radially movable therein into and out of engagement with the inNer wall of said outer tubular member; wedge means extending between said shoe members and longitudinally movable with respect thereto in one direction to move said shoe members radially outwardly into locking engagement with said outer tubular member and in an opposite direction to permit said shoe members to move radially inwardly out of locking engagement with said outer tubular member; connecting means connecting said wedge means and said inner tubular member so that longitudinal movement of said inner tubular member in said one direction similarly moves said wedge means in said one direction and movement of said inner tubular member in said opposite direction permits movement of said wedge means in said opposite direction; and release means connected to said shoe members, independent of said connecting means and movable to move said shoe members in said one direction and out of locking engagement with said wedge means.
Claim 3
Dependent Claim
19 words
An assembly as defined in claim 1 in which said release means extends externally of said outer tubular member.
Claim 4
Dependent Claim
60 words
An assembly as defined in claim 1 in which said outer tubular member is provided with a pair of longitudinal grooves in its inner wall and each of said shoe members extends into one of said grooves and is confined thereby against circumferential relative movement between said shoe members and said outer tubular member but permitting relative longitudinal movement therebetween.
Claim 5
Dependent Claim
26 words
An assembly as defined in claim 1 in which spring means is provided, engageable with said shoe members and biasing the same in said opposite direction.
Claim 6
Dependent Claim
29 words
An assembly as defined in claim 1 in which spacer means are provided between said inner and outer tubular members to maintain the same in spaced but concentric relationship.
Claim 7
Dependent Claim
64 words
An assembly as defined in claim 1 provided with a head rigidly connected to one of said tubular members, said head having carpet engageable pins projecting from one side thereof, and having a butt member rigidly connected to the other one of said tubular members, the interconnection between said outer and inner tubular members preventing relative rotation between said head and said butt member.
Claim 8
Dependent Claim
37 words
An assembly as defined in claim 1, in which said outer tubular member, said inner tubular member, said shoe members, said wedge means, and said connecting means are keyed together to prevent any substantial relative rotation therebetween.
References Cited (Backward Citations)
US1231262A
Cited
US1859223A
Cited
US1867289A
Cited
US2329932A
Cited
US2555515A
Cited
US2695504A
Cited
US2947556A
Cited
US3359032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |