US3851779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift truck fork retaining pins
Assignee: Caterpillar Industrial Inc
•
Filing: 1973-08-17
•
Granted: 1974-12-03
•
Expires: 1993-08-17
Abstract
Abstract A lift truck fork carriage construction is provided with fork positioning retainers that are securely mounted on the carriage structure whereby said retainers cannot be jolted off or misplaced from the fork carriage during lift truck operations.
Inventors
- 👤 J Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
182 words
In a lift truck of the type having an extensible mast structure, a carriage mounted for travel along said mast, and load forks mounted on said carriage with means for allowing sideto-side adjustment of said forks, the improvement comprising; fork retainer means coacting with said carriage and said forks to restrain said forks in a predetermined position on said carriage, means for permitting at least partial removal of said retainer means from said carriage for adjusting said forks to new positions, and positive restraining means coacting with said retainers to prevent loss of said retainers from said carriage, said positive restraining means comprising in combination, an upper portion of the carriage extending upwardly beyond the mounting position of said forks and said retainers, crossbar members defining a transverse recess and forming part of said carriage upper portion and positioned at a distance above said retainers such that the retainers may be moved upwardly in relation to said carriage and yet are retrained from being removed from said carriage by having the upper portion of said retainers being closely confined by said recess.
Claim 2
Dependent Claim
182 words
In a lift truck of the type having an extensible mast structure, a carriage mounted for travel along said mast, and load forks mounted on said carriage with means for allowing sideto-side adjustment of said forks, the improvement comprising; fork retainer means coacting with said carriage and said forks to restrain said forks in a predetermined position on said carriage, means for permitting at least partial removal of said retainer means from said carriage for adjusting said forks to new positions, and positive restraining means coacting with said retainers to prevent loss of said retainers from said carriage, said positive restraining means comprising in combination, an upper portion of the carriage extending upwardly beyond the mounting position of said forks and said retainers, crossbar members defining a transverse recess and forming part of said carriage upper portion and positioned at a distance above said retainers such that the retainers may be moved upwardly in relation to said carriage and yet are retrained from being removed from said carriage by having the upper portion of said retainers being closely confined by said recess.
Claim 3
Dependent Claim
39 words
The combination of claim 1 wherein said recess terminates at a distance from the side of said carriage whereby said retainers can be removed from said carriage by following a tortuous path through the upper portion of said carriage.
References Cited (Backward Citations)
US2975924A
Cited
US3027033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |