US3269685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling control for electrically operating hydraulic leveling means
Assignee: Frank Hamachek Machine Co Inc
•
Filing: 1965-05-28
•
Granted: 1966-08-30
•
Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 John M Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:32
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/02; H01H35/027; Y; Y10; Y10S; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A CONTROL FOR A LEVELING DEVICE COMPRISING THE COMBINATION WITH A TRACK PROVIDING A NORMALLY HORIZONTAL BALL PATH, OF A BALL MOUNTED TO ROLL ONT HE TRACK AND RECIPROCABLE UPON SAID PATH, AND BALL-ACTUATED SWITCHING MEANS DISPOSED AT POINTS SPACED LONGITUDINALLY OF THE TRACK AND TO WHICH THE BALL IS MOVABLE BY GRAVITY WITHOUT SUBSTANTIAL OPPOSING BIAS.
Claim 2
Dependent Claim
57 words
A CONTROL FOR A LEVELING DEVICE COMPRISING THE COMBINATION WITH A TRACK PROVIDING A NORMALLY HORIZONTAL BALL PATH, OF A BALL MOUNTED TO ROLL ONT HE TRACK AND RECIPROCABLE UPON SAID PATH, AND BALL-ACTUATED SWITCHING MEANS DISPOSED AT POINTS SPACED LONGITUDINALLY OF THE TRACK AND TO WHICH THE BALL IS MOVABLE BY GRAVITY WITHOUT SUBSTANTIAL OPPOSING BIAS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |