US4520981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable telescopic support
Assignee: PLAN INDUSTRIES Corp 3831 PODLIN DRIVE FRANKLIN PARK IL 60131
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Filing: 1983-05-23
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Granted: 1985-06-04
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Expires: 2003-05-23
Abstract
Abstract An adjustable telescopic support having a standard providing a hollow core, an elongated telescoping slide bar movable within the hollow core of the standard with the slide bar providing a tapered face extending downwardly and inwardly within the standard. The standard provides an adjustable member threadable into the hollow core of the standard for engaging the tapered face of the telescoping slide bar for adjustably maintaining the telescopic position of the slide bar within the hollow core of the standard. A base is provided for maintaining the standard in a vertical plane.
Inventors
- 👤 Marvin Harrigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:20
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/043; F16M11/046; F16M2200/00; F16M2200/02; F16M2200/025; F16M2200/027; F16M2200/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
An adjustable vertical support comprising; (a) a square shaped standard having a hollow core, (b) a base for said standard for supporting the same in a vertical position, (c) an elongated U-shaped supporting means movable vertically within the hollow core of said standard, (d) said U-shaped supporting means providing a pair of parallel arms, one edge of each arm being tapered throughout its length so as to provide therebetween an inclined medial face portion, (e) said parallel arms providing at their free elongated margins parallel straight edges adapted to have sliding contact with the inner wall surface of one wall of said hollow core of said standard so as to maintain said supporting means in axial alignment with said hollow core as it moves therethrough, (f) said medial face portion of said U-shaped supporting means adapted to be spaced from a confronting inner wall surface of said hollow core of said standard when said supporting means is movably positioned therein, and (g) means provided by said standard and adjustably projectable through said one confronting inner wall surface into binding contact with said inclined medial face of said supporting means for restraining vertical movement of said supporting means in one direction into said said standard while permitting free movement of said supporting means in an opposite direction out of said standard.
Claim 2
Dependent Claim
220 words
An adjustable vertical support comprising; (a) a square shaped standard having a hollow core, (b) a base for said standard for supporting the same in a vertical position, (c) an elongated U-shaped supporting means movable vertically within the hollow core of said standard, (d) said U-shaped supporting means providing a pair of parallel arms, one edge of each arm being tapered throughout its length so as to provide therebetween an inclined medial face portion, (e) said parallel arms providing at their free elongated margins parallel straight edges adapted to have sliding contact with the inner wall surface of one wall of said hollow core of said standard so as to maintain said supporting means in axial alignment with said hollow core as it moves therethrough, (f) said medial face portion of said U-shaped supporting means adapted to be spaced from a confronting inner wall surface of said hollow core of said standard when said supporting means is movably positioned therein, and (g) means provided by said standard and adjustably projectable through said one confronting inner wall surface into binding contact with said inclined medial face of said supporting means for restraining vertical movement of said supporting means in one direction into said said standard while permitting free movement of said supporting means in an opposite direction out of said standard.
Claim 3
Dependent Claim
97 words
An adjustable vertical support as defined by claim 1, wherein said means provided by said standard projectable within its hollow core and into contact with said one longitudinal inclined face of said support means comprising a rotatable crank having a handle end exterior of said support and a bearing end threadable through one wall of said standard and into contact with said one inclined face of said support so as to be in binding contact with said support at any point along its inclined length to prevent vertical movement of said support means relative to said standard.
Claim 4
Dependent Claim
123 words
An adjustable vertical support as defined by claim 1, wherein said means provided by said standard projectable within its hollow core and into contact with said one longitudinal inclined face of said support means comprising a rotatable crank having a handle end exterior of said support and a bearing end threadable through one wall of said standard and into contact with said one inclined face of said support so as to be in binding contact with said support at any point along its inclined length to prevent vertical movement of said support means relative to said standard, and wherein said support means comprises a one-piece member U-shaped in cross section and providing longitudinal vertically disposed edges and an opposite longitudinally extending inclined surface.
Claim 5
Dependent Claim
65 words
An adjustable vertical support as defined by claim 1, wherein said parallel arms of said U-shaped member are of a width equal to the inner diameters of said hollow core and tapered longitudinally to a diameter less than that of said hollow core with the free ends of said arms parallel to and in facial engagement with a corresponding wall surface of said hollow core.
Claim 6
Dependent Claim
61 words
An adjustable vertical support as defined by claim 1, including means on the inner end of said supporting means extending tangentially with respect to said one face thereof and movable therewith and into contact with said means for restraining vertical movement of said support so as to prevent complete separation of said supporting means from said hollow core of said standard.
Claim 7
Dependent Claim
61 words
An adjustable vertical support as defined by claim 2, including means on the inner end of said supporting means extending tangentially with respect to said one face thereof and movable therewith and into contact with said means for restraining vertical movement of said support so as to prevent complete separation of said supporting means from said hollow core of said standard.
Claim 8
Dependent Claim
49 words
An adjustable vertical support as defined by claim 1, wherein said base comprises a plurality of individual leg members of identical construction with each leg member providing means for connection to another leg member to form a socket for securing said standard to said base in a vertical plane.
Claim 9
Dependent Claim
49 words
An adjustable vertical support as defined by claim 2, wherein said base comprises a plurality of individual leg members of identical construction with each leg member providing means for connection to another leg member to form a socket for securing said standard to said base in a vertical plane.
References Cited (Backward Citations)
US1782660A
Cited
US1663357A
Cited
US2248369A
Cited
US2628142A
Cited
GB760822A
Cited
GB1140987A
Cited
US3637179A
Cited
DE2051705A1
Cited
US4085763A
Cited
FR2385361A1
Cited
US4278223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |