US3851908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescopic counterbalance
Assignee: Motors Liquidation Co
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Filing: 1973-06-11
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Granted: 1974-12-03
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Expires: 1993-06-11
Abstract
Abstract A telescopic counterbalance for a hinged closure includes inner and outer telescopic members which are biased apart to their telescopic outward position. Bearing arrangements on the inner end of each member slidably bear on the other member. The members are located in extended position by a plurality of depressions on the outer member engaged by an integral collapsed rib on the inner member. The depressions and rib are located intermediate the bearing arrangements and the ends of the member to space the bearing arrangements and increase the bending strength of the counterbalance.
Inventors
- 👤 H Hester
- 👤 B Wanlass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:59
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/1041; E05F1/105; E05F1/1058; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/546; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/65
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
A telescopic counterbalance for a closure movable between open and closed positions relative to a support comprising, in combination, a pair of telescopic annular members movable telescopically inwardly and outwardly of each other and adapted to have their outer ends respectively secured to the closure and to the support, means biasing the members in a telescopic outward direction to bias the closure to an open position, each telescopic member including bearing means adjacent the inner end thereof and stop means spaced substantially from a respective bearing means, the bearing means of each member slidably bearing on the other member as the members move telescopically relative to each other to provide spaced bearing areas increasing the bending strength of the telescopic counterbalance, the stop means of the members being engageable with each other upon movement of the members in a telescopic outward direction to provide a fixed stop delineating the extended position of the members and located in spaced relationship to the bearing means intermediately thereof to function as an additional bearing point for increased bending strength.
Claim 2
Dependent Claim
176 words
A telescopic counterbalance for a closure movable between open and closed positions relative to a support comprising, in combination, a pair of telescopic annular members movable telescopically inwardly and outwardly of each other and adapted to have their outer ends respectively secured to the closure and to the support, means biasing the members in a telescopic outward direction to bias the closure to an open position, each telescopic member including bearing means adjacent the inner end thereof and stop means spaced substantially from a respective bearing means, the bearing means of each member slidably bearing on the other member as the members move telescopically relative to each other to provide spaced bearing areas increasing the bending strength of the telescopic counterbalance, the stop means of the members being engageable with each other upon movement of the members in a telescopic outward direction to provide a fixed stop delineating the extended position of the members and located in spaced relationship to the bearing means intermediately thereof to function as an additional bearing point for increased bending strength.
Claim 3
Dependent Claim
222 words
A Telescopic counterbalance for a closure movable between open and closed positions relative to a support comprising, in combination, a pair of telescopic annular members movable telescopically inwardly and outwardly of each other and adapted to have their outer ends respectively secured to the closure and to the support, means biasing the members in a telescopic outward direction to bias the closure to an open position, each telescopic member including bearing means adjacent the inner end thereof and stop means spaced substantially from a respective bearing means, the bearing means of each member slidably bearing on the other member as the members move telescopically relative to each other to provide spaced bearing areas increasing the bending strength of the telescopic counterbalance, the stop means of the members being engageable with each other upon movement of the members in a telescopic outward direction to provide a fixed stop delineating the extended position of the members, and located in spaced relationship to the bearing means intermediately thereof to function as an additional bearing point for increased bending strength, the bearing means of one member being located in the path of the stop means of the other member and engageable therewith to provide the fixed stop upon a lack of engagement of the stop means of the one member with that of the other member.
Claim 4
Dependent Claim
222 words
A Telescopic counterbalance for a closure movable between open and closed positions relative to a support comprising, in combination, a pair of telescopic annular members movable telescopically inwardly and outwardly of each other and adapted to have their outer ends respectively secured to the closure and to the support, means biasing the members in a telescopic outward direction to bias the closure to an open position, each telescopic member including bearing means adjacent the inner end thereof and stop means spaced substantially from a respective bearing means, the bearing means of each member slidably bearing on the other member as the members move telescopically relative to each other to provide spaced bearing areas increasing the bending strength of the telescopic counterbalance, the stop means of the members being engageable with each other upon movement of the members in a telescopic outward direction to provide a fixed stop delineating the extended position of the members, and located in spaced relationship to the bearing means intermediately thereof to function as an additional bearing point for increased bending strength, the bearing means of one member being located in the path of the stop means of the other member and engageable therewith to provide the fixed stop upon a lack of engagement of the stop means of the one member with that of the other member.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |