US3072377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easy chair
Assignee: Individual
•
Filing: 1960-07-19
•
Granted: 1963-01-08
•
Expires: 1980-07-19
Abstract
No abstract record available.
Inventors
- 👤 Blomborg Karl Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:54
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A CHAIR COMPRISING A FRAME HAVING TWO OPPOSED SIDE MEMBERS, TWO BOSSES PROJECTING TOWARDS EACH OTHER FROM THE SIDE MEMBERS, A BODY SUPPORTING MEMBER ROTATABLY MOUNTED ON SAID BOSSES SO AS TO BE TILTABLE RELATIVELY TO SAID FRAME, AND A DEVICE FOR BIASING SAID BODY SUPPORTING MEMBER INTO A CERTAIN POSITION RELATIVELY TO SAID SIDE MEMBERS, SAID DEVICE COMPRISING A TORSION SPRING SUBSTANTIALLY COAXIAL WITH THE AXIS OF ROTATION OF SAID BODY SUPPORTING MEMBER ABOUT SAID BOSSES AND NON-ROTATABLY FIXED AT ITS ENDS TO SAID BOSSES AND AT ITS CENTRAL PART TO SAID BODY SUPPORTING MEMBER.
Claim 2
Dependent Claim
96 words
A CHAIR COMPRISING A FRAME HAVING TWO OPPOSED SIDE MEMBERS, TWO BOSSES PROJECTING TOWARDS EACH OTHER FROM THE SIDE MEMBERS, A BODY SUPPORTING MEMBER ROTATABLY MOUNTED ON SAID BOSSES SO AS TO BE TILTABLE RELATIVELY TO SAID FRAME, AND A DEVICE FOR BIASING SAID BODY SUPPORTING MEMBER INTO A CERTAIN POSITION RELATIVELY TO SAID SIDE MEMBERS, SAID DEVICE COMPRISING A TORSION SPRING SUBSTANTIALLY COAXIAL WITH THE AXIS OF ROTATION OF SAID BODY SUPPORTING MEMBER ABOUT SAID BOSSES AND NON-ROTATABLY FIXED AT ITS ENDS TO SAID BOSSES AND AT ITS CENTRAL PART TO SAID BODY SUPPORTING MEMBER.
References Cited (Backward Citations)
US2424753A
Cited
FR516521A
Cited
US2249828A
Cited
US2624568A
Cited
US2606758A
Cited
US2718257A
Cited
US2845991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |