US3224529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power safety device for carriage controlled material handling trucks
Assignee: LEWIS SHEPARD CO
•
Filing: 1963-05-23
•
Granted: 1965-12-21
•
Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Peter F Gandolfo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
B; B66; B66F; B66F17/00; B66F17/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
FOR USE ON A CARRIAGE CONTROLLED MATERIAL HANDLING TRUCK OF THE TYPE HAVING A MOBILE BASE WITH A MAST ASSEMBLY EXTENDING UPWARDLY THEREFROM AND A CARRIAGE MOVABLE VERTICALLY ON SAID MAST ASSEMBLY UNDER THE INFLUENCE OF LIFTING APPARATUS OPERATIVELY CONNECTED THERETO, AN EMERGENCY STOP DEVICE OPERABLE FROM THE CARRIAGE OF SAID TRUCK FOR ENABLING AN OPERATOR POSITIONED THEREON TO QUICKLY AND EFFICIENTLY STOP ALL MOVEMENT OF SAID TRUCK SHOULD AN OPERATING EMERGENCY ARISE, SAID EMERGENCY STOP DEVICE COMPRISING: A BUTTON-OPERATED SWITCH OF THE TYPE CLOSED BY PRESSURE EXERTED ON SAID BOTTON AND OPENED BY RELEASE OF PRESSURE THEREON; MEANS MANUALLY OPERABLE FROM SAID CARRIAGE AND EXTENDING CO-EXTENSIVELY WITH THE LIFTING APPARATUS OF SAID TRUCK FOR MAINTAINING PRESSURE ON SAID BUTTON DURING NORMAL OPERATION OF SAID TRUCK, SAID
Claim 2
Dependent Claim
127 words
FOR USE ON A CARRIAGE CONTROLLED MATERIAL HANDLING TRUCK OF THE TYPE HAVING A MOBILE BASE WITH A MAST ASSEMBLY EXTENDING UPWARDLY THEREFROM AND A CARRIAGE MOVABLE VERTICALLY ON SAID MAST ASSEMBLY UNDER THE INFLUENCE OF LIFTING APPARATUS OPERATIVELY CONNECTED THERETO, AN EMERGENCY STOP DEVICE OPERABLE FROM THE CARRIAGE OF SAID TRUCK FOR ENABLING AN OPERATOR POSITIONED THEREON TO QUICKLY AND EFFICIENTLY STOP ALL MOVEMENT OF SAID TRUCK SHOULD AN OPERATING EMERGENCY ARISE, SAID EMERGENCY STOP DEVICE COMPRISING: A BUTTON-OPERATED SWITCH OF THE TYPE CLOSED BY PRESSURE EXERTED ON SAID BOTTON AND OPENED BY RELEASE OF PRESSURE THEREON; MEANS MANUALLY OPERABLE FROM SAID CARRIAGE AND EXTENDING CO-EXTENSIVELY WITH THE LIFTING APPARATUS OF SAID TRUCK FOR MAINTAINING PRESSURE ON SAID BUTTON DURING NORMAL OPERATION OF SAID TRUCK, SAID
References Cited (Backward Citations)
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |