US3667774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Height changing mechanism
Assignee: VACTRONICS Inc
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Filing: 1969-11-10
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Granted: 1972-06-06
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Expires: 1989-11-10
Abstract
Abstract A SELF-LOCKING HEIGHT CHANGING MECHANISM PARTICULARLY ADAPTED FOR USE WITH MACHINES, TOOLS, VEHICLES OR THE LIKE EQUIPPED WITH A HOUSING AND HAVING AN AXLE WHOSE OPERATIVE POSITION WITH RESPECT TO THE HOUSING IS TO BE SELECTIVELY CHANGED. THIS NOVEL MECHANISM INCLUDES THE USE OF A HEIGHT-CONTROLLING MEMBER ASSOCIATED WITH THE AXLE, AND CAPABLE OF SLIDING MOVEMENT AS WELL AS ROCKING MOVEMENT IN THE HOUSING. THE HEIGHT-CONTROLLING MEMBER IS NORMALLY LOCKED WITH RESPECT TO THE HOUSING, BUT WHICH IS EASILY UNLOCKED BY THE OPERATOR IN THE COURSE OF SELECTIVELY CHANGING THE HEIGHT OF THE MACHINE.
Inventors
- 👤 Wilbur-Webb Selley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:12
CPC Classifications
B; B60; B60G; B60G17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |