US3678622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety reverse for automatic parking gates
Assignee: Individual
•
Filing: 1970-08-11
•
Granted: 1972-07-25
•
Expires: 1990-08-11
Abstract
Abstract An improved automatic drive mechanism for automobile parking lot gates incorporating a reversing mechanism to immediately raise the gate if the gate strikes an object as it is lowering. An electrical interlock prevents the gate from raising when it has reached its final horizontal position.
Inventors
- 👤 Harold L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:21
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05Y; E05Y2900/00; E05Y2900/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
An automatic parking gate mechanism adapted to raise and lower a barrier gate, a rotatable lost motion drive connection in said mechAnism comprising a driving arm and a driven arm mounted with a common axis of rotation and a resilient drive means therebetween adapted for deflection in response to interruption in the downward movement of said gate, and means responsive to said deflection for raising said gate.
Claim 2
Dependent Claim
67 words
An automatic parking gate mechanism adapted to raise and lower a barrier gate, a rotatable lost motion drive connection in said mechAnism comprising a driving arm and a driven arm mounted with a common axis of rotation and a resilient drive means therebetween adapted for deflection in response to interruption in the downward movement of said gate, and means responsive to said deflection for raising said gate.
Claim 3
Dependent Claim
27 words
The automatic parking gate mechanism of claim 1 including means responsive to said gate reaching its normal barrier position for deactivating said means responsive to said deflection.
Claim 4
Dependent Claim
35 words
The automatic parking gate mechanism of claim 1 wherein said resilient drive means bias said lost motion drive connection to a normal position which may be overcome by a predetermined resistance to said downward movement.
Claim 5
Dependent Claim
189 words
An automatic parking gate mechanism having a rotatable shaft, bearing means supporting said shaft, a reversible motor driven crank assembly including a reversible motor driven crank means for rotation of said shaft, and control means actuated by said shaft to limit the angular rotation of said shaft, the improvement comprising; a master crank attached to said shaft, a slave crank adjacent said master crank and rotatable about said shaft, said slave crank being pivoted to said reversible motor driven crank means to thereby rotate said slave crank about said shaft in either direction, a deflectable stop attached to said master crank and engageable with said slave crank whereby upon engagement said master crank and shaft will rotate with said slave crank and lower a parking gate arm and whereby a lowering parking gate arm upon striking an obstruction will stop said master crank and shaft thereby deflecting said deflectable stop, safety switch means engageable with said slave crank and actuated upon deflection of said deflectable stop, said safety switch means being connected to said control means to reverse said motor driven crank means thus raising said parking gate arm.
Claim 6
Dependent Claim
189 words
An automatic parking gate mechanism having a rotatable shaft, bearing means supporting said shaft, a reversible motor driven crank assembly including a reversible motor driven crank means for rotation of said shaft, and control means actuated by said shaft to limit the angular rotation of said shaft, the improvement comprising; a master crank attached to said shaft, a slave crank adjacent said master crank and rotatable about said shaft, said slave crank being pivoted to said reversible motor driven crank means to thereby rotate said slave crank about said shaft in either direction, a deflectable stop attached to said master crank and engageable with said slave crank whereby upon engagement said master crank and shaft will rotate with said slave crank and lower a parking gate arm and whereby a lowering parking gate arm upon striking an obstruction will stop said master crank and shaft thereby deflecting said deflectable stop, safety switch means engageable with said slave crank and actuated upon deflection of said deflectable stop, said safety switch means being connected to said control means to reverse said motor driven crank means thus raising said parking gate arm.
Claim 7
Dependent Claim
15 words
The automatic parking gate mechanism of claim 4 wherein said deflectable stop includes a spring.
Claim 8
Dependent Claim
42 words
The automatic parking gate mechanism of claim 4 including a stop attached to said master crank and engageable with said slave crank whereby upon engagement said master crank and shaft will rotate with said slave crank to raise a parking gate arm.
Claim 9
Dependent Claim
27 words
The automatic parking gate mechanism of claim 4, including means for deactivating said safety switch means responsive to said parking gate arm reaching its normal lowered position.
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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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |