US4564791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operators for sliding gates
Assignee: LARKO ELECTRONIC Corp INGLEWOOD LOS ANGELES CA
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Filing: 1983-09-16
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Granted: 1986-01-14
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Expires: 2003-09-16
Abstract
Abstract Operators for sliding gates including a solenoid-operated detent for engaging a gear of the gate drive motor shaft speed reducer and locking the associated gate, and a key-operated cam for disengaging the detent from the gear.
Inventors
- 👤 Joseph L. Brickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:05
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/218; E05Y2201/22; E05Y2201/23; E05Y2201/244; E05Y2201/246; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2900/00; E05Y2900/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A gate operator, comprising: a gate drive motor; a shaft speed reducer comprising a gear coupled to said motor; a detent for engaging the teeth of said gear and thus preventing rotation of said gear and movement of said gate; solenoid means for withdrawing said detent from said teeth against the urging of a return spring; solenoid energizing means for energizing said solenoid when said motor is energized; and cam means for selectively withdrawing said detent from said teeth against the urging of said return spring.
Claim 2
Dependent Claim
86 words
A gate operator, comprising: a gate drive motor; a shaft speed reducer comprising a gear coupled to said motor; a detent for engaging the teeth of said gear and thus preventing rotation of said gear and movement of said gate; solenoid means for withdrawing said detent from said teeth against the urging of a return spring; solenoid energizing means for energizing said solenoid when said motor is energized; and cam means for selectively withdrawing said detent from said teeth against the urging of said return spring.
Claim 3
Dependent Claim
18 words
A gate operator as claimed in claim 1, further comprising key-operated lock means for rotating said cam means.
Claim 4
Dependent Claim
37 words
A gate operator as claimed in claim 2 in which said motor, said speed reducer, said detent, and said cam means are located in a cabinet, and said lock means passes through a wall of said cabinet.
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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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |