US3263955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undercarriage for a rocking chair
Assignee: American Metal Products Co
•
Filing: 1965-09-30
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Granted: 1966-08-02
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Expires: 1985-09-30
Abstract
Abstract 1,138,328. Rocking chairs. AMERICAN METAL PRODUCTS CO. 6 Sept., 1966, No. 39692/66. Heading A4J. In a chair rocking mechanism, the rocking pivots 16 are positioned towards the rear of plate members 8 and 14, which they interconnect, and the rocking action is controlled by springs 29, which are effective both in tension and compression. A further compression spring 32 is adjustable by means of a wing-nut 34, to vary the resistance to rocking. The plates are carried on a ball-race 9 for swivelling about the axis of vertical pivot 10.
Inventors
- 👤 Howard S Hunt
- 👤 Jr Roy F Mcmahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:04
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/025; A47C3/026; A47C3/0255; A47C3/18; A47C7/00; A47C7/002; A47C7/36; A47C7/40; A47C7/44; A47C7/443
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A ROCKER ASSEMBLY FOR THE UNDERCARRIAGE OF ROCKING CHAIRS AND THE LIKE, COMPRISING: A BASE MEMBER; A HORIZONTAL ROCKER MEMBER HAVING FIRST AND SECOND ENDS AND POSITIONED OVER AND SPACED UPWARDLY FROM SAID BASE MEMBER; MEANS MOUNTING SAID ROCKER MEMBER ON SAID BASE MEMBER FOR RELATIVE FORWARD-BACKWARD ROCKING MOVEMENT OF BOTH OF SAID FIRST AND SECOND ENDS OF SAID ROCKER MEMBER ABOUT A TRANSVERSELY-EXTENDING HORIZONTAL ROCKING AXIS, WHICH IS OFFSET A SUBSTANTIAL DISTANCE REARWARDLY FROM A VERTICAL CENTER PLANE PASSING TRANSVERSELY THROUGH THE MID-PORTION OF SAID ROCKER MEMBER; AND DOUBLE ACTION SPRING MEANS OTHER THAN SAID FIRST-NAMED MEANS LOCATED ON THE FRONT SIDE OF SAID ROCKING AXIS, VERTICALLY ARRANGED BETWEEN THE ROCKER MEMBER AND THE BASE MEMBER, AND SECURED TO BOTH SO AS TO BE OPERATIVE TO CUSHION AT LEAST THE EXTREME PORTION OF THE FORWARD ROCKING MOVEMENT BY COMPRESSION AND OF THE BACKWARD ROCKING MOVEMENT BY TENSION.
Claim 2
Dependent Claim
148 words
A ROCKER ASSEMBLY FOR THE UNDERCARRIAGE OF ROCKING CHAIRS AND THE LIKE, COMPRISING: A BASE MEMBER; A HORIZONTAL ROCKER MEMBER HAVING FIRST AND SECOND ENDS AND POSITIONED OVER AND SPACED UPWARDLY FROM SAID BASE MEMBER; MEANS MOUNTING SAID ROCKER MEMBER ON SAID BASE MEMBER FOR RELATIVE FORWARD-BACKWARD ROCKING MOVEMENT OF BOTH OF SAID FIRST AND SECOND ENDS OF SAID ROCKER MEMBER ABOUT A TRANSVERSELY-EXTENDING HORIZONTAL ROCKING AXIS, WHICH IS OFFSET A SUBSTANTIAL DISTANCE REARWARDLY FROM A VERTICAL CENTER PLANE PASSING TRANSVERSELY THROUGH THE MID-PORTION OF SAID ROCKER MEMBER; AND DOUBLE ACTION SPRING MEANS OTHER THAN SAID FIRST-NAMED MEANS LOCATED ON THE FRONT SIDE OF SAID ROCKING AXIS, VERTICALLY ARRANGED BETWEEN THE ROCKER MEMBER AND THE BASE MEMBER, AND SECURED TO BOTH SO AS TO BE OPERATIVE TO CUSHION AT LEAST THE EXTREME PORTION OF THE FORWARD ROCKING MOVEMENT BY COMPRESSION AND OF THE BACKWARD ROCKING MOVEMENT BY TENSION.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |