US3848850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle mounted hydraulic powered post puller
Assignee: Allmand Bros Inc
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Filing: 1974-03-01
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Granted: 1974-11-19
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Expires: 1994-03-01
Abstract
Abstract A hydraulically operated post-pulling apparatus adapted to be mounted on a motor vehicle, comprising a support adapted to be mounted on a vehicle, a telescoping boom pivotally mounted at one end on the support and having hydraulic cylinder means provided for extending and retracting the boom and for raising and lowering the boom, hydraulic cylinder means carried at the remote end of the boom for pulling out posts comprising a platform adapted to be positioned on the ground, hydraulic cylinder means mounted thereon, the other end of the hydraulic means being pivotally mounted to the end of the boom, hand actuated valves for operating the hydraulic cylinder means, and means carried at the end of the boom adapted to engage and grip a pole or post to be extracted.
Inventors
- 👤 J Bemis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:06
CPC Classifications
E; E02; E02D; E02D9/00; E02D9/02; E01; E01F; E01F9/00; E01F9/60
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
162 words
A hydraulically operated post-pulling apparatus adapted to be mounted on a vehicle comprising a. a support adapted to be mounted on said vehicle, b. a boom pivotally mounted at one end with respect to said support and adapted to revolve about a vertical axis and additionally to be raised and lowered, said boom comprising a pair of telescopingly arranged boom members, c. first hydraulic cylinder means mounted with respect to said support and said boom and adapted for raising and lowering said boom angularly, d. second hydraulic cylinder means affixed to said boom members and adapted to extend and retract said boom members with respect to each other, e. third hydraulic cylinder means pivotally connected at one end to the remote end of said boom and having a ground-engaging support means mounted at the other end, and f. means on the remote end of said boom for engaging means adapted to engage and grip a post to be pulled from the ground.
Claim 2
Dependent Claim
162 words
A hydraulically operated post-pulling apparatus adapted to be mounted on a vehicle comprising a. a support adapted to be mounted on said vehicle, b. a boom pivotally mounted at one end with respect to said support and adapted to revolve about a vertical axis and additionally to be raised and lowered, said boom comprising a pair of telescopingly arranged boom members, c. first hydraulic cylinder means mounted with respect to said support and said boom and adapted for raising and lowering said boom angularly, d. second hydraulic cylinder means affixed to said boom members and adapted to extend and retract said boom members with respect to each other, e. third hydraulic cylinder means pivotally connected at one end to the remote end of said boom and having a ground-engaging support means mounted at the other end, and f. means on the remote end of said boom for engaging means adapted to engage and grip a post to be pulled from the ground.
Claim 3
Dependent Claim
66 words
An apparatus according to claim 1, wherein said means for raising and lowering said boom comprises a tower vertically positioned and affixed at one end to said support, said boom being pivotally connected to the base of said tower and said first hydraulic cylinder means being pivotally connected at one end to an elevated portion of said tower and at the other end to said boom.
Claim 4
Dependent Claim
43 words
An apparatus according to claim 2, wherein valve means is provided for neutralizing said first hydraulic cylinder means when said post lifting hydraulic cylinder means is being operated, thereby permitting said boom to be raised and lowered by said third hydraulic cylinder means.
Claim 5
Dependent Claim
19 words
An apparatus according to claim 1, wherein said ground-engaging support comprises a base plate having ground-penetrating protuberances mounted thereon.
Claim 6
Dependent Claim
44 words
An apparatus according to claim 4, wheRein the support mounted on said vehicle is provided with a support plate affixed thereto and provided with apertures to engage the protuberances of said base plate and to support said base plate during storage of said apparatus.
Claim 7
Dependent Claim
15 words
An apparatus according to claim 1, wherein said boom members have a substantially rectangular cross-section.
Claim 8
Dependent Claim
28 words
An apparatus according to claim 1, wherein a hook is provided at the remote end of said boom to engage said means for engaging and gripping a post.
Claim 9
Dependent Claim
25 words
An apparatus according to claim 1, wherein said boom is provided with a control valve support and has a plurality of control valves mounted thereon.
Claim 10
Dependent Claim
58 words
An apparatus according to claim 2, wherein a pair of vertically spaced-apart clevis rings are mounted on said tower each having a clevis rotatably mounted thereon, one end of said boom being pivotally connected to the lower of said clevises and one end of said first hydraulic cylinder means being pivotally connected to the upper of said clevises.
Claim 11
Dependent Claim
31 words
An apparatus according to claim 1, wherein said means for engaging and gripping a post comprises a chain having its ends connected to a scissors-form clamp adapted to clamp a post.
Claim 12
Dependent Claim
15 words
An apparatus according to claim 1, including (g) means for engaging and gripping a post.
Claim 13
Dependent Claim
24 words
An apparatus according to claim 1, wherein said third hydraulic cylinder means (e) is additionally connected to revolve about the axis of said boom.
Claim 14
Dependent Claim
65 words
An apparatus according to claim 1 wherein one of said boom members is rotatably mounted in the other, wherein a support for said third hydraulic cylinder (e) and a hook are affixed to the end of said rotatable boom member, and wherein collar means rotatably mounted and axially restrained on said rotatable boom member is connected to one end of said second hydraulic cylinder means.
Claim 15
Dependent Claim
42 words
An apparatus according to claim 1, wherein a collar is rotatably mounted on said boom having means pivotally connected to said third hydraulic cylinder means (e) at one end thereof, thereby permitting said cylinder to revolve about the axis of said boom.
Claim 16
Dependent Claim
14 words
An apparatus according to claim 14, additionally having a hook affixed to said collar.
Claim 17
Dependent Claim
35 words
An apparatus according to claim 1, having a universal coupling affixed at one end to said boom and having said third hydraulic cylinder means (e) pivotally connected to the other end of said universal coupling.
Claim 18
Dependent Claim
65 words
An apparatus according to claim 1, having a cylindrical recess provided in the end of said boom and a shaft rotatably mounted therein, a hook affixed to the end of said shaft, and means affixed to said shaft pivotally connected to one end of said third hydraulic cylinder means (e) thereby permitting said third hydraulic cylinder means to revolve about the axis of said boom.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |