Patent US4023828A successfully refreshed from Google Patents.
US4023828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer pad for earthmoving apparatus
Assignee: Individual
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Filing: 1975-07-07
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Granted: 1977-05-17
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Expires: 1995-07-07
Abstract
Abstract A stabilizer pad for attachment to an arm of a piece of earthmoving equipment such as a backhoe. In one embodiment the pad has a solid geometric shape such as a cube or pyramid with at least three outer surfaces, any one of which can be arranged as a ground engaging surface. The pad or the arm has a cut-out section for permitting rotation of the pad relative to the arm to at least two different positions. In another embodiment the pad is pivotally secured to the arm. In one position the pad is positioned below the arm and in the other position the pad rotates about 180° with the end of the arm forming a grouser and the other side of the pad functioning to limit the penetration of the arm into the ground.
Inventors
- 👤 Robert A. Mackenzie
- 👤 Andry Lagsdin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:50
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/08; E02F9/085
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
In combination with a support arm of an earthmoving apparatus, a stabilizer pad comprising a piece having a cut-out opening and alternate ground engaging surfaces including one which has resilient means associated therewith and another which is rigidly connected to said one surface, means pivotally supporting said piece to the arm spaced a distance from the end of the arm with the cut-out opening permitting revolution of the piece relative to the arm through substantially one half revolution, the end of said arm forming an extension from the pivot point, whereby in a first position of the piece the resilient means engages the ground with the arm end above the resilient means, and in a second position, substantially one half revolution from the first position, the extension is for engaging with softer ground with the other surface of the piece being maintained above the extension and forming a limiting means to limit ground penetration of the extension.
Claim 2
Dependent Claim
157 words
In combination with a support arm of an earthmoving apparatus, a stabilizer pad comprising a piece having a cut-out opening and alternate ground engaging surfaces including one which has resilient means associated therewith and another which is rigidly connected to said one surface, means pivotally supporting said piece to the arm spaced a distance from the end of the arm with the cut-out opening permitting revolution of the piece relative to the arm through substantially one half revolution, the end of said arm forming an extension from the pivot point, whereby in a first position of the piece the resilient means engages the ground with the arm end above the resilient means, and in a second position, substantially one half revolution from the first position, the extension is for engaging with softer ground with the other surface of the piece being maintained above the extension and forming a limiting means to limit ground penetration of the extension.
Claim 3
Dependent Claim
30 words
A combination as set forth in claim 1 including locking means for locking the piece in a fixed position relative to the arm in the second position of the pad.
Claim 4
Dependent Claim
18 words
A combination as set forth in claim 1 wherein said piece has a U-shape defining the cut-out opening.
Claim 5
Dependent Claim
39 words
A combination as set forth in claim 1 wherein said piece is substantially flat on said another side and it has flange means extending therefrom forming at least part of a means for securing the piece to the arm.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |