US3327985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically adjustable support for chairs and the like
Assignee: Steelcase Inc
•
Filing: 1965-06-01
•
Granted: 1967-06-27
•
Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Edward C Levit
- 👤 Bernard J Fries
- 👤 Robert P Poppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:23
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/20; A47C3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A VERTICALLY ADJUSTABLE SUPPORT MECHANISM FOR CHAIRS AND THE LIKE, OF THE TYPE HAVING A BASE PORTION, AN ELONGATED SUPPORT COLUMN WHICH INTERFITS WITH AND IS VERTICALLY MOVABLE WITH RESPECT TO SAID BASE PORTION, AND MEANS FOR HOLDING SAID COLUMN WITH RESPECT TO SAID BASE PORTION TO PREVENT RELATIVE MOVEMENT THEREBETWEEN AT SELECTED ADJUSTED POSITIONS OF THE COLUMN, THE IMPROVEMENT COMPRISING: MEANS RESPONSIVE TO DOWNWARD PRESSURE UPON SAID COLUMN TO POSITIVELY INTERLOCK THE SAME WITH SAID BASE PORTION, SUCH THAT DOWNWARD VERTICAL MOVEMENT OF THE COLUMN UNDER SUCH PRESSURE RESULTING FROM IMPROPER OPERATION OR MALFUNCTION OF SAID COLUMN-HOLDING MEANS IS PREVENTED; SAID IMPROVEMENT MEANS INCLUD-
Claim 2
Dependent Claim
106 words
IN A VERTICALLY ADJUSTABLE SUPPORT MECHANISM FOR CHAIRS AND THE LIKE, OF THE TYPE HAVING A BASE PORTION, AN ELONGATED SUPPORT COLUMN WHICH INTERFITS WITH AND IS VERTICALLY MOVABLE WITH RESPECT TO SAID BASE PORTION, AND MEANS FOR HOLDING SAID COLUMN WITH RESPECT TO SAID BASE PORTION TO PREVENT RELATIVE MOVEMENT THEREBETWEEN AT SELECTED ADJUSTED POSITIONS OF THE COLUMN, THE IMPROVEMENT COMPRISING: MEANS RESPONSIVE TO DOWNWARD PRESSURE UPON SAID COLUMN TO POSITIVELY INTERLOCK THE SAME WITH SAID BASE PORTION, SUCH THAT DOWNWARD VERTICAL MOVEMENT OF THE COLUMN UNDER SUCH PRESSURE RESULTING FROM IMPROPER OPERATION OR MALFUNCTION OF SAID COLUMN-HOLDING MEANS IS PREVENTED; SAID IMPROVEMENT MEANS INCLUD-
References Cited (Backward Citations)
USRE17686E
Cited
US1726372A
Cited
US1731461A
Cited
US2703691A
Cited
US3137512A
Cited
FR1336277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |