US3112834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front end loaders
Assignee: Dempster Systems Inc
•
Filing: 1960-05-09
•
Granted: 1963-12-03
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 George R Dempster
- 👤 Henry C French
- 👤 Neil F Wender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:23
CPC Classifications
B; B65; B65F; B65F3/00; B65F3/02; B65F3/04; B60; B60P; B60P1/00; B60P1/48; B60P1/50; B65F2003/0263; B65F2003/0279
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A FRONT END LOADER OF THE CHARACTER DESCRIBED, THE COMBINATION OF A PAIR OF LIFTING ARMS, A MEMBER WHICH IS GENERALLY CIRCULAR IN CROSS SECTION PIVOTALLY CONNECTED WITH RESPECT TO AND EXTENDING BETWEEN THE LIFTING ARMS, A PAIR OF PARALLEL FORK ARMS ADAPTED TO DETACHABLY ENGAGE A CONTAINER, AND A CONNECTION BETWEEN EACH FORK ARM AND THE MEMBER, SAID CONNECTION COMPRISING PLATE MEANS FIXED ON THE MEMBER TO EXTEND RADIALLY THEREFROM OPPOSITE THE FORK ARM AND HAVING A SERIES OF HOLES THEREIN, A U-SHAPED BRACKET ON EACH FORK ARM ADAPTED TO BE FITTED OVER THE MEMBER AND THE PLATE MEANS AND HAVING AT LEAST ONE HOLE THEREIN, AND A BOLT INSERTABLE THROUGH RESPECTIVE HOLES IN THE PLATE MEANS AND THE BRACKET, SAID PLATE MEANS AND SAID BRACKET COOPERATING TO PREVENT ROTATIONAL MOVEMENT OF THE RESPECTIVE FORK ARM IN EITHER DIRECTION RELATIVE TO THE MEMBER.
Claim 2
Dependent Claim
145 words
IN A FRONT END LOADER OF THE CHARACTER DESCRIBED, THE COMBINATION OF A PAIR OF LIFTING ARMS, A MEMBER WHICH IS GENERALLY CIRCULAR IN CROSS SECTION PIVOTALLY CONNECTED WITH RESPECT TO AND EXTENDING BETWEEN THE LIFTING ARMS, A PAIR OF PARALLEL FORK ARMS ADAPTED TO DETACHABLY ENGAGE A CONTAINER, AND A CONNECTION BETWEEN EACH FORK ARM AND THE MEMBER, SAID CONNECTION COMPRISING PLATE MEANS FIXED ON THE MEMBER TO EXTEND RADIALLY THEREFROM OPPOSITE THE FORK ARM AND HAVING A SERIES OF HOLES THEREIN, A U-SHAPED BRACKET ON EACH FORK ARM ADAPTED TO BE FITTED OVER THE MEMBER AND THE PLATE MEANS AND HAVING AT LEAST ONE HOLE THEREIN, AND A BOLT INSERTABLE THROUGH RESPECTIVE HOLES IN THE PLATE MEANS AND THE BRACKET, SAID PLATE MEANS AND SAID BRACKET COOPERATING TO PREVENT ROTATIONAL MOVEMENT OF THE RESPECTIVE FORK ARM IN EITHER DIRECTION RELATIVE TO THE MEMBER.
References Cited (Backward Citations)
CA575111A
Cited
US1364128A
Cited
US1518561A
Cited
US1835431A
Cited
US2421472A
Cited
US2582663A
Cited
US2676722A
Cited
US2620935A
Cited
US2824655A
Cited
US2900096A
Cited
US2950828A
Cited
US2975918A
Cited
US2975924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |