US3856253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable stand
Assignee: American Trading and Production Corp
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Filing: 1973-05-01
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Granted: 1974-12-24
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Expires: 1993-05-01
Abstract
Abstract An improved adjustable stand of the type which is vertically upwardly and downwardly adjustable, including first and second telescopable rigid tubes, said first rigid tube being mounted at one end thereof on a base, resilient means interposed between said first and second rigid tubes for releasably biasing said second rigid tube in a normally fixed position relative to said first rigid tube; and clutch means for releasing said resilient means for vertically adjusting said second rigid tube relative to said first rigid tube.
Inventors
- 👤 F Seebinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:51
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1481; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; H; H04; H04R; H04R1/00; H04R1/08; F16M2200/00; F16M2200/02; F16M2200/025; F16M2200/027; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
218 words
An adjustable stand comprising a base, a first rigid tube having an end connected to said base and an opposed free end upstanding therefrom, a second right tube of lesser diameter than said first rigid tube and slidably connected therewith, said second rigid tube being telescopable within said first rigid tube, resilient means between said first and second rigid tubes for releasably biasing said second rigid tube in a normally fixed position relative to said first rigid tube, and clutch means for releasing said resilient means for vertically adjusting said second rigid tube relative to said first rigid tube, said clutch means being discrete from said resilient means for normally maintaining said first and second rigid tubes in assembled relation and comprising an assembly clip including a pair of leg members connected one to the other by a base member, one of said legs terminating in a U-shaped body extending initially outwardly from the plane of said leg and returning inwardly toward the plane of said leg, said first rigid tube being provided with a lateral slot for receiving said U-shaped body, said U-shaped body being rotatable through said lateral slot for releasing tension of said resilient means on said second rigid tube whereby said second rigid tube may be vertically adjusted relative to said first rigid tube.
Claim 2
Dependent Claim
218 words
An adjustable stand comprising a base, a first rigid tube having an end connected to said base and an opposed free end upstanding therefrom, a second right tube of lesser diameter than said first rigid tube and slidably connected therewith, said second rigid tube being telescopable within said first rigid tube, resilient means between said first and second rigid tubes for releasably biasing said second rigid tube in a normally fixed position relative to said first rigid tube, and clutch means for releasing said resilient means for vertically adjusting said second rigid tube relative to said first rigid tube, said clutch means being discrete from said resilient means for normally maintaining said first and second rigid tubes in assembled relation and comprising an assembly clip including a pair of leg members connected one to the other by a base member, one of said legs terminating in a U-shaped body extending initially outwardly from the plane of said leg and returning inwardly toward the plane of said leg, said first rigid tube being provided with a lateral slot for receiving said U-shaped body, said U-shaped body being rotatable through said lateral slot for releasing tension of said resilient means on said second rigid tube whereby said second rigid tube may be vertically adjusted relative to said first rigid tube.
Claim 3
Dependent Claim
80 words
The adjustable stand of claim 1 including a slot in said first rigid tube for receiving an end of said resilient means, said slot being proximate said free end of said first rigid tube and in spaced relation therefrom, and a slot in said clutch means for receiving another end of said resilient means, each slot being selectively spaced, one from the other, and wherein said resilient means is a torsion spring, having opposed ends, surrounding said second rigid tube.
Claim 4
Dependent Claim
97 words
The adjustable stand of claim 2 wherein said opposed ends of said torsion spring are removably connected to said first rigid tube and said clutch means, respectively, said opposed ends of said torsion spring including a flanged member at each end thereof and a pair of elbows, one elbow connecting each of said flanged members to the main body of said torsion spring, said flanged members being generally perpendicular to the axis of said torsion spring, each of said flanged members being respectively received in a receiving slot of said first rigid tube and said clutch means.
Claim 5
Dependent Claim
58 words
The adjustable stand of claim 1 including a sleeve fixedly mounted on said second rigid tube for limiting upward extensibility of said second rigid tube relative to said first rigid tube, said sleeve being arranged to abut said U-shaped body of said assembly clip as said second rigid tube is adjusted upwardly and thereby limit upward adjustment thereof.
Claim 6
Dependent Claim
83 words
The adjustable stand of claim 1 including at least one detent defined in said second rigid tube thereby bulging at least a portion of said second rigid tube for limiting upward extensibility of said second rigid tube relative to said first rigid tube, said at least one detent being arranged for causing said bulged portion of said second rigid tube to abut said U-shaped body of said assembly clip as said second rigid tube is adjusted upwardly and thereby limit upward adjustment thereof.
Claim 7
Dependent Claim
57 words
The adjustable stand of claim 1 including at least one crimp in said second rigid tube for limiting upward extensibility thereof relative to sAid first rigid tube, said at least one crimp being arranged to abut said U-shaped body of said assembly clip as said second rigid tube is adjusted upwardly and thereby limit upward adjustment thereof.
Claim 8
Dependent Claim
173 words
A clutch for regulating the relative lengths of a pair of telescoping rigid tubes, a second rigid tube being of lesser diameter than a first rigid tube for telescoping therein comprising resilient means between said first and second rigid tubes for releasably biasing said second rigid tube in a normally fixed position relative to said first rigid tube, said resilient means having opposed ends and surrounding said second rigid tube, and an assembly clip including a pair of leg members connected one to the other by a base member, one of said leg members terminating in an elbow connecting a repressor member thereto, said first rigid tube being provided with a lateral slot for receiving said repressor member, said repressor member being rotatable through said lateral slot for releasing tension of said resilient means on said second rigid tube whereby said second rigid tube may vertically adjusted relative to said first rigid tube, said resilient means being automatically retractable to a normal biasing position with release of rotating pressure on said repressor member.
Claim 9
Dependent Claim
173 words
A clutch for regulating the relative lengths of a pair of telescoping rigid tubes, a second rigid tube being of lesser diameter than a first rigid tube for telescoping therein comprising resilient means between said first and second rigid tubes for releasably biasing said second rigid tube in a normally fixed position relative to said first rigid tube, said resilient means having opposed ends and surrounding said second rigid tube, and an assembly clip including a pair of leg members connected one to the other by a base member, one of said leg members terminating in an elbow connecting a repressor member thereto, said first rigid tube being provided with a lateral slot for receiving said repressor member, said repressor member being rotatable through said lateral slot for releasing tension of said resilient means on said second rigid tube whereby said second rigid tube may vertically adjusted relative to said first rigid tube, said resilient means being automatically retractable to a normal biasing position with release of rotating pressure on said repressor member.
Claim 10
Dependent Claim
36 words
The clutch of claim 7 including a handle member for supporting said assembly clip and for rotating said repressor member through said lateral slot for adjusting said second rigid tube relative to said first rigid tube.
Claim 11
Dependent Claim
73 words
The clutch of claim 8 including a slot in said first rigid tube for receiving an end of said resilient means, said slot being proximate and end of said first rigid tube and in spaced relation therefrom, and a slot in said handle member for receiving another end of said resilient means, each slot being selectively spaced, one from the other, and wherein said resilient means is a flat helically wound torsion spring.
Claim 12
Dependent Claim
96 words
The clutch of claim 9 wherein said opposed ends of said torsion spring are releasably connected to said first rigid tube and said handle member, respectively, said opposed ends of said torsion spring including a flanged member on each end thereof and a pair of elbows, one elbow connecting each of said flanged members to the main body of said torsion spring, said flanged members being generally perpendicular to the axis of said torsion spring, each of said flanged members being respectively received in a receiving slot of said first rigid tube and said handle member.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |