US3908844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fort adapter for front end loader
Assignee: GREENCASTLE METAL WORKS
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Filing: 1974-04-03
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Granted: 1975-09-30
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Expires: 1994-04-03
Abstract
Abstract A fork adapter for attachment to the bottom plate of the scoop of a front end loader comprising a linearly extending tubular support member having a tubular post extending from the rear portion thereof. A frame comprises a pair of L-shaped plates each having a first leg extending upwardly along the sides of said support member and post and a second leg extending rearwardly, with a nut between the second legs above the support member. A screw in the nut has a swivel base on its lower end and a handle on its upper end. The post is open at the top, to receive an extension piece therein, such as lumber of conventional size. At its rear, the tubular support member has an end plate which extends above the upper surface thereof.
Inventors
- 👤 Cedric A Duffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:50
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/401; B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
147 words
A fork adapter for the bucket of a front end loader comprising: a linearly extending support member, an upright post secured to said support member at the rear portion thereof and extending substantially perpendicularly thereto, a frame comprising a pair of L-shaped plates on opposite sides of said support member and post, each having a first leg extending along a side of said support member and secured thereto and thence upwardly along and secured to a side of said post, each said frame plate further comprising a second leg extending rearwardly and above said support member, a nut secured between said second legs with the axis thereof generally perpendicular to said support member, a screw in saiD nut, and a handle at the upper end of said screw, whereby said frame strengthens the attachment of said post to said support member and supports said nut and screw.
Claim 2
Dependent Claim
147 words
A fork adapter for the bucket of a front end loader comprising: a linearly extending support member, an upright post secured to said support member at the rear portion thereof and extending substantially perpendicularly thereto, a frame comprising a pair of L-shaped plates on opposite sides of said support member and post, each having a first leg extending along a side of said support member and secured thereto and thence upwardly along and secured to a side of said post, each said frame plate further comprising a second leg extending rearwardly and above said support member, a nut secured between said second legs with the axis thereof generally perpendicular to said support member, a screw in saiD nut, and a handle at the upper end of said screw, whereby said frame strengthens the attachment of said post to said support member and supports said nut and screw.
Claim 3
Dependent Claim
29 words
The fork adapter of claim 1, said linearly extending support member having an upstanding plate at the rear end thereof extending above the upper surface of said support member.
Claim 4
Dependent Claim
21 words
The fork adapter of claim 1, wherein said upstanding post is a hollow tubular member open at the upper end thereof.
Claim 5
Dependent Claim
30 words
The fork adapter of claim 1, said support member being a hollow tubular member, and a reinforcing member therein beneath said post and extending forwardly and rearwardly of said post.
Claim 6
Dependent Claim
17 words
The fork adapter of claim 1, said post having a lesser transverse width than said support member.
Claim 7
Dependent Claim
30 words
The fork adapter of claim 5, wherein said frame plate first legs have the upper portions thereof along said post offset from the lower portions thereof along said support member.
Claim 8
Dependent Claim
24 words
The fork adapter of claim 6, wherein said first legs have extension means extending along and secured to the sides of said support members.
Claim 9
Dependent Claim
16 words
The fork adapter of claim 7, said extension means extending forwardly and rearwardly of said post.
Claim 10
Dependent Claim
30 words
The fork adapter of claim 8, said support member being a hollow tubular member, and a reinforcing member therein beneath said post and extending forwardly and rearwardly of said post.
Claim 11
Dependent Claim
17 words
The fork adapter of claim 1, wherein said support member and said post are hollow tubular members.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |