US3175408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratchet drive mechanism
Assignee: Individual
•
Filing: 1962-10-09
•
Granted: 1965-03-30
•
Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Wallace B Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:36
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/065; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08; H01H51/082; H01H51/086; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A MECHANISM OF THE TYPE DESCRIBED, A SHAFT, A WHEEL HAVING RATCHET TEETH FIXED ON SAID SHAFT, A LEVER ARM HAVING MEANS FOR ELECTROMAGNETIC ATTRACTION, A PIVOT FOR THE ARM, A PAWL MEMBER CARRIED BY SAID ARM ENGAGEABLE WITH SAID TEETH TO ACTUATE THE WHEEL UPON OSCILLATING MOVEMENT OF THE LEVER ARM, AN ELECTROMAGNET
Claim 2
Dependent Claim
55 words
IN A MECHANISM OF THE TYPE DESCRIBED, A SHAFT, A WHEEL HAVING RATCHET TEETH FIXED ON SAID SHAFT, A LEVER ARM HAVING MEANS FOR ELECTROMAGNETIC ATTRACTION, A PIVOT FOR THE ARM, A PAWL MEMBER CARRIED BY SAID ARM ENGAGEABLE WITH SAID TEETH TO ACTUATE THE WHEEL UPON OSCILLATING MOVEMENT OF THE LEVER ARM, AN ELECTROMAGNET
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |