Patent US3123829A successfully refreshed from Google Patents.
US3123829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bronson
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
A; A47; A47B; A47B81/00; A47B81/04; B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/06; B65G1/07; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/102; Y10S414/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
AN IMPROVED SELF-LEVELING DEVICE COMPRISING IN COMBINATION A BASE MEMBER SUPPORTING AN UPRIGHT FRAME, A VERTICALLY MOVABLE CARRIAGE RETAINED WITHIN SAID FRAME, SAID CARRIAGE SUPPORTING A PLATFORM ADAPTED FOR RECEIPT OF A PLURALITY OF ARTICLES, SAID CARRIAGE BEING SUPPORTED BY AT LEAST ONE FLEXIBLE CABLE COMMUNICATING WITH REEL MEANS AFFIXED TO A ROTATABLE SHAFT WHICH IS RETAINED AGAINST AXIAL MOVEMENT, SAID SHAFT BEING BIASED BY A COILED TORSION SPRING DISPOSED THEREON, SAID SHAFT BEING PROVIDED WITH MEANS FOR IMPARTING AN INITIAL DEFLECTION TO SAID COILED TORSION SPRING, SAID REEL MEANS HAVING MEANS TO VARY THE LEVERAGE EXERTED UPON SAID SPRING, SAID REEL MEANS COMPRISING A CONICAL MEMBER, THE EXTERNAL PERIPHERY OF SAID CONICAL MEMBER BEING FORMED WITH A HELICAL GROOVE, THE SAID FLEXIBLE CABLE BEING RECEIVED WITHIN SAID GROOVE, THE SAID CARRIAGE INCLUDING BIASING MEANS COMMUNICATING WITH THE FLEXIBLE CABLE, THE SAID BIASING MEANS BEING ADJUSTABLE TO VARY THE POSITION OF THE FLEXIBLE CABLE WITHIN SAID GROOVE, WHEREBY THE TOPMOST PORTIONS OF SAID ARTICLES ARE MAINTAINED AT A CONSTANT LEVEL INDEPENDENTLY OF THE NUMBER OF SUCH ARTICLES.
Claim 2
Dependent Claim
177 words
AN IMPROVED SELF-LEVELING DEVICE COMPRISING IN COMBINATION A BASE MEMBER SUPPORTING AN UPRIGHT FRAME, A VERTICALLY MOVABLE CARRIAGE RETAINED WITHIN SAID FRAME, SAID CARRIAGE SUPPORTING A PLATFORM ADAPTED FOR RECEIPT OF A PLURALITY OF ARTICLES, SAID CARRIAGE BEING SUPPORTED BY AT LEAST ONE FLEXIBLE CABLE COMMUNICATING WITH REEL MEANS AFFIXED TO A ROTATABLE SHAFT WHICH IS RETAINED AGAINST AXIAL MOVEMENT, SAID SHAFT BEING BIASED BY A COILED TORSION SPRING DISPOSED THEREON, SAID SHAFT BEING PROVIDED WITH MEANS FOR IMPARTING AN INITIAL DEFLECTION TO SAID COILED TORSION SPRING, SAID REEL MEANS HAVING MEANS TO VARY THE LEVERAGE EXERTED UPON SAID SPRING, SAID REEL MEANS COMPRISING A CONICAL MEMBER, THE EXTERNAL PERIPHERY OF SAID CONICAL MEMBER BEING FORMED WITH A HELICAL GROOVE, THE SAID FLEXIBLE CABLE BEING RECEIVED WITHIN SAID GROOVE, THE SAID CARRIAGE INCLUDING BIASING MEANS COMMUNICATING WITH THE FLEXIBLE CABLE, THE SAID BIASING MEANS BEING ADJUSTABLE TO VARY THE POSITION OF THE FLEXIBLE CABLE WITHIN SAID GROOVE, WHEREBY THE TOPMOST PORTIONS OF SAID ARTICLES ARE MAINTAINED AT A CONSTANT LEVEL INDEPENDENTLY OF THE NUMBER OF SUCH ARTICLES.
References Cited (Backward Citations)
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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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |