US3277839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling equipment
Assignee: Ethyl Corp
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Filing: 1963-08-15
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Granted: 1966-10-11
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Expires: 1983-08-15
Abstract
No abstract record available.
Inventors
- 👤 Rex E Conrad
- 👤 Louis R Parker
- 👤 Edward Z Rushing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0227; G05D1/0229; B; B66; B66C; B66C7/00; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0328; B66C2700/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
IN A CRANE MECHANISM OR THE LIKE OF THE TYPE WHICH IS MOVED ON A RAILED PARTH TO AT LEAST ONE DEFINITIVE TERMINAL POSITION BY A REVERSIBLE PNEUMATIC MOTOR DRIVING MEANS HAVING AT LEAST ONE FIRST PNENMATIC FEED PORT FOR OPERATION IN ONE DIRECTION AND AT LEAST ONE SECOND FEED PORT FOR OPERATION IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION, AN APPARATUS FOR ASSURING ATTAINMENT OF SAID TERMINAL POSITION IN A SUBSTANTIALLY SHOCK-FREE MANNER COMPRISING, IN COMBINATION, (A) A PNEUMATIC FEED SUPPLY MEANS FOR OPERATION OF SAID PNEUMATIC MOTOR DRIVING MEANS, (B) A FIRST SWITCH MEANS ATTACHED TO SAID RAILED PATH AT A POINT APPROACHING SAID AT LEAST ONE TERMINAL POSITION FOR ACTUATION BY SAID CRANE MECHANISM IN PASSING, (C) A CONTROLLABLE-TIME SWITCHING MEANS RESPONSIVE TO SAID FIRST SWITCH MEANS FOR SUPPLYING PNEUMATIC FEED TO REVERSE SAID REVERSIBLE PNEUMATIC MOTOR DRIVING MEANS FOR CONTROLLABLE PERIOD OF TIME, AND (D) A SECOND SWTICH MEANS ATTACHED TO SAID RAILED PATH AT A POINT BETWEEN SAID FIRST SWITCH MEANS AND IN CLOSE PROXIMITY TO SAID AT LEAST ONE TERMINAL POSITION FOR ACTUATION BY SAID CRANE MECHANISM IN PASSING FOR TERMINATING PNEUMATIC FEED FROM SAID PNEUMATIC FEED SUPPLY MEANS.
Claim 2
Dependent Claim
196 words
IN A CRANE MECHANISM OR THE LIKE OF THE TYPE WHICH IS MOVED ON A RAILED PARTH TO AT LEAST ONE DEFINITIVE TERMINAL POSITION BY A REVERSIBLE PNEUMATIC MOTOR DRIVING MEANS HAVING AT LEAST ONE FIRST PNENMATIC FEED PORT FOR OPERATION IN ONE DIRECTION AND AT LEAST ONE SECOND FEED PORT FOR OPERATION IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION, AN APPARATUS FOR ASSURING ATTAINMENT OF SAID TERMINAL POSITION IN A SUBSTANTIALLY SHOCK-FREE MANNER COMPRISING, IN COMBINATION, (A) A PNEUMATIC FEED SUPPLY MEANS FOR OPERATION OF SAID PNEUMATIC MOTOR DRIVING MEANS, (B) A FIRST SWITCH MEANS ATTACHED TO SAID RAILED PATH AT A POINT APPROACHING SAID AT LEAST ONE TERMINAL POSITION FOR ACTUATION BY SAID CRANE MECHANISM IN PASSING, (C) A CONTROLLABLE-TIME SWITCHING MEANS RESPONSIVE TO SAID FIRST SWITCH MEANS FOR SUPPLYING PNEUMATIC FEED TO REVERSE SAID REVERSIBLE PNEUMATIC MOTOR DRIVING MEANS FOR CONTROLLABLE PERIOD OF TIME, AND (D) A SECOND SWTICH MEANS ATTACHED TO SAID RAILED PATH AT A POINT BETWEEN SAID FIRST SWITCH MEANS AND IN CLOSE PROXIMITY TO SAID AT LEAST ONE TERMINAL POSITION FOR ACTUATION BY SAID CRANE MECHANISM IN PASSING FOR TERMINATING PNEUMATIC FEED FROM SAID PNEUMATIC FEED SUPPLY MEANS.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |