Patent US3597559A successfully refreshed from Google Patents.
US3597559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geneva gear sectors mounted on a common shaft for the stepwise rotation of the switching contacts of rotary switches
Assignee: Smit Nijmegen Electrotechnische Fabrieken NV
•
Filing: 1970-02-11
•
Granted: 1971-08-03
•
Expires: 1990-02-11
Abstract
Abstract A driving mechanism for the stepwise rotation of the switching contacts of a rotary switch through angles of different magnitudes by means of different maltese crosses and driving members cooperating with said crosses, said driving members being driven by a common shaft through sets of cooperating normal toothed wheels and cooperating elliptical-toothed wheels said sets of cooperating toothed wheels having equal mean transmission ratios.
Inventors
- 👤 Gerardus A Van Riemsdijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:47
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/32; H01H3/44; F; F16; F16H; F16H27/00; F16H27/04; F16H27/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18528; Y10T74/19; Y10T74/1987; Y10T74/19879
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A driving mechanism for the stepwise rotation of the switching contacts of a rotary switch through angles of different magnitudes by means of sectors of different maltese crosses, said sectors each cooperating with an individual rotatable driving member and becoming operative one after the other, all sectors being positively coupled with the rotary shaft of the switching contacts and all driving members being positively coupled with a common driving shaft, characterized in that the driving members are mounted for rotation one in respect of the other and are coupled with the driving shaft via individual sets of cooperating toothed wheels, the mean transmission ratios of said sets of toothed wheels being equal and at least one of said sets of toothed wheels comprising cooperating elliptical-toothed wheels.
Claim 2
Dependent Claim
126 words
A driving mechanism for the stepwise rotation of the switching contacts of a rotary switch through angles of different magnitudes by means of sectors of different maltese crosses, said sectors each cooperating with an individual rotatable driving member and becoming operative one after the other, all sectors being positively coupled with the rotary shaft of the switching contacts and all driving members being positively coupled with a common driving shaft, characterized in that the driving members are mounted for rotation one in respect of the other and are coupled with the driving shaft via individual sets of cooperating toothed wheels, the mean transmission ratios of said sets of toothed wheels being equal and at least one of said sets of toothed wheels comprising cooperating elliptical-toothed wheels.
Claim 3
Dependent Claim
67 words
A driving mechanism according to claim 1, characterized in that the sets of toothed wheels provided between the driving shaft and the driving members are so constructed and so cooperate with each other as to ensure that the mean transmission ratios occuring during the active strokes of the driving members are inversely proportional to the angular steps of the Maltese crosses cooperating with the respective driving members.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |