US3156134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for dental chair
Assignee: Ritter Co Inc
•
Filing: 1961-07-25
•
Granted: 1964-11-10
•
Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Tom Forrester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:29
CPC Classifications
G; G05; G05G; G05G9/00; G05G9/02; G05G9/04; G05G9/047; A; A61; A61G; A61G15/00; A61G15/02; G05G2009/04703; G05G2009/04707; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18232; Y10T74/20; Y10T74/20012; Y10T74/20201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
CONTROL APPARATUS COMPRISING, IN COMBINATION, A REMOVABLY MOUNTABLE CONTROL BOX, A PLURALITY OF CONTROL MEANS MOUNTED WITHIN AND ON THE BOTTOM OF SAID BOX AND SPACED FROM EACH OTHER, A SHAFT HAVING A NEUTRAL POSITION AND BEING MOUNTED FOR SUBSTANTIALLY UNIVERSAL MOVEMENT ABOUT A PIVOT POINT ON AN AXIS CENTRALLY LOCATED WITH RESPECT TO SAID PLURALITY OF CONTROL MEANS, SAID AXIS BEING SUBSTANTIALLY EQUALLY RADIALLY SPACED FROM EACH OF SAID CONTROL MEANS, A CONTACT DISC MOUNTED ON SAID SHAFT, AND RESILIENT MEANS BETWEEN SAID CONTACT DISC AND BOX NORMALLY MAINTAINING SAID SHAFT IN SAID NEUTRAL POSITION AND PERMITTING SAID DISC TO ACTUATE AT LEAST ONE OF SAID CONTROL MEANS ONLY WHEN A SELECTED FORCE IS APPLIED TO SAID SHAFT.
Claim 2
Dependent Claim
119 words
CONTROL APPARATUS COMPRISING, IN COMBINATION, A REMOVABLY MOUNTABLE CONTROL BOX, A PLURALITY OF CONTROL MEANS MOUNTED WITHIN AND ON THE BOTTOM OF SAID BOX AND SPACED FROM EACH OTHER, A SHAFT HAVING A NEUTRAL POSITION AND BEING MOUNTED FOR SUBSTANTIALLY UNIVERSAL MOVEMENT ABOUT A PIVOT POINT ON AN AXIS CENTRALLY LOCATED WITH RESPECT TO SAID PLURALITY OF CONTROL MEANS, SAID AXIS BEING SUBSTANTIALLY EQUALLY RADIALLY SPACED FROM EACH OF SAID CONTROL MEANS, A CONTACT DISC MOUNTED ON SAID SHAFT, AND RESILIENT MEANS BETWEEN SAID CONTACT DISC AND BOX NORMALLY MAINTAINING SAID SHAFT IN SAID NEUTRAL POSITION AND PERMITTING SAID DISC TO ACTUATE AT LEAST ONE OF SAID CONTROL MEANS ONLY WHEN A SELECTED FORCE IS APPLIED TO SAID SHAFT.
References Cited (Backward Citations)
US627671A
Cited
US1660278A
Cited
US1764005A
Cited
US1787734A
Cited
US1874557A
Cited
US2388327A
Cited
US2366883A
Cited
US2430808A
Cited
US2561556A
Cited
US2574624A
Cited
US2849548A
Cited
US2848988A
Cited
US2958233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |