Patent US3305508A successfully refreshed from Google Patents.
Patent US3876090A successfully refreshed from Google Patents.
US3876090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fork lift
Assignee: Individual
•
Filing: 1973-01-18
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Granted: 1975-04-08
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Expires: 1993-01-18
Abstract
Abstract A farm tractor lift, having a three-point hitch, can be used for practically any material up to a weight of several tons despite the fact that mild steel is used practically throughout its construction.
Inventors
- 👤 J D Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:22
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A fork lift for attachment to a tractor, comprising in combination, a tractor attachment means and a pair of horizontal fork members extending therefrom, said tractor attachment means and said horizontal members being a unified weldment of seperate mild steel members, said tractor attachment means comprising a vertical frame from the lower corners of which said horizontal members extend in parallel, spaced apart relation, said horizontal members being reinforced with bars of high carbon steel, the tractor attachment frame being provided with post members engageable with the tractor for supporting the attachment therefrom, said tractor attachment frame representing substantially in elevation, the appearance of a figure eight lying on its side wherein a center member is longer than the outside members parallel thereto, and an upper end of said member having holes for tractor attachment thereto, said horizontal fork members comprising tapered channels having webs reinforced by welding high carbon steel bars thereto, said frame being provided with internal knee braces and the attachment of horizontal members to said frame being reinforced by knee braces therebetween.
Claim 2
Dependent Claim
176 words
A fork lift for attachment to a tractor, comprising in combination, a tractor attachment means and a pair of horizontal fork members extending therefrom, said tractor attachment means and said horizontal members being a unified weldment of seperate mild steel members, said tractor attachment means comprising a vertical frame from the lower corners of which said horizontal members extend in parallel, spaced apart relation, said horizontal members being reinforced with bars of high carbon steel, the tractor attachment frame being provided with post members engageable with the tractor for supporting the attachment therefrom, said tractor attachment frame representing substantially in elevation, the appearance of a figure eight lying on its side wherein a center member is longer than the outside members parallel thereto, and an upper end of said member having holes for tractor attachment thereto, said horizontal fork members comprising tapered channels having webs reinforced by welding high carbon steel bars thereto, said frame being provided with internal knee braces and the attachment of horizontal members to said frame being reinforced by knee braces therebetween.
References Cited (Backward Citations)
US2314792A
Cited
US3004677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |