US3146592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic lift with rotation lock for beauty chair
Assignee: F AND F KOENIGKRAMER CO
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Filing: 1959-05-20
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Granted: 1964-09-01
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Philip C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:02
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/20; A47C3/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
160 words
IN A BEAUTY OR MEDICAL CHAIR THE COMBINATION COMPRISING A BASE, AN HYDRAULIC LIFT HAVING A PORTION THEREOF MOUNTED IN FIXED RELATION ON SAID BASE AND HAVING A PISTON ROD VERTICALLY MOVABLE AND AXIALLY ROTATABLE RELATIVE TO SAID BASE, A CLAMP SUPPORTED ON SAID LIFT AT A FIXED DISTANCE FROM SAID BASE AND ADJACENT SAID PISTON ROD, CLAMP ACTUATING MEANS, A LEVER PIVOTALLY SECURED TO SAID FIXEDLY MOUNTED PORTION OF SAID HYDRAULIC LIFT AND ADAPTED TO ACTUATE SAID LIFT TO VERTICALLY POSITION SAID PISTON ROD AS DESIRED, AND MEANS CONNECTING SAID LEVER AND CLAMPACTUATING MEANS, SAID LEVER BEING SWINGABLE INTO NONOPERATING RELATION TO SAID HYDRAULIC LIFT TO ACTUATE SAID CLAMP-ACTUATING MEANS TO SET SAID CLAMP TO SECURE SAID PISTON ROD AGAINST ROTATION RELATIVE TO SAID BASE AND SWINGABLE FROM SAID CLAMP-SET POSITION TO SUCCESIVELY RELEASE SAID CLAMP AND MOVE INTO OPERATING RELATION TO SAID HYDRAULIC LIFT WHEREBY SAID PISTON ROD MAY BE VERTICALLY MOVED ONLY WHILE SAID CLAMP IS RELEASED.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |