US3700047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fence post driver
Assignee: Individual
•
Filing: 1971-05-11
•
Granted: 1972-10-24
•
Expires: 1991-05-11
Abstract
Abstract A fence post driver for driving fence posts, including replacement posts for an existing fence having a plurality of parallel strands, has a lifting mechanism which repeatedly elevates a hammer which when released, falls by gravity to hammer the fence post into the ground to the desired depth. The driver includes a post guiding member which is stationary with respect to the ground during the driving operation and formed with a vertically upstanding back portion and a pair of side portions secured to the back portion. Notches formed in the side portions align with the individual strands of the fence which are positioned between the post and the back portion of the post guiding member, so that the driver may operate on the opposite side of the fence with respect to the post being driven. Of course, the driver may be used on the same side of the fence as the post being driven.
Inventors
- 👤 Michael A Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:05
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/26; E04H17/261; E04H17/263
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
A fence post driver for driving a fence post in relation to an existing fence of substantially parallel horizontal strands, said driver comprising: a rigid frame, means for movably supporting and carrying said frame from place to place, a post guiding member vertically oriented with respect to the fence post to be driven and secured to said frame, said member in guiding relation with said post and including a back portion having a surface in parallel relation to said fence and a pair of side portions extending outwardly from said back portion to surround a fence post on three sides, said side portions each having a plurality of notches therein for accommodating the strands of said fence, and means secured to said frame for repeatedly impacting the post guided by said post guiding member to drive the post into the ground.
Claim 2
Dependent Claim
141 words
A fence post driver for driving a fence post in relation to an existing fence of substantially parallel horizontal strands, said driver comprising: a rigid frame, means for movably supporting and carrying said frame from place to place, a post guiding member vertically oriented with respect to the fence post to be driven and secured to said frame, said member in guiding relation with said post and including a back portion having a surface in parallel relation to said fence and a pair of side portions extending outwardly from said back portion to surround a fence post on three sides, said side portions each having a plurality of notches therein for accommodating the strands of said fence, and means secured to said frame for repeatedly impacting the post guided by said post guiding member to drive the post into the ground.
Claim 3
Dependent Claim
101 words
The structure of claim 1 wherein said means for impacting is comprised of: a hammer slidably mounted to said frame and having an upstanding arm with a plurality of latching bars vertically disposed thereon, a catch mechanism slidably mounted on said frame for selective engagement with one of the latching bars on said hammer arm, said catch mechanism being releasable from engagement with said hammer arm latching bar to allow said hammer to fall and impact a post being driven, when said hammer is in an elevated condition, and means for elevating said catch mechanism when said hammer is engaged therewith.
Claim 4
Dependent Claim
37 words
The structure of claim 2 wherein said means for elevating said catch is a hydraulic motor secured at one end to said frame and running vertically upwardly to be secured at the other end to said catch.
Claim 5
Dependent Claim
84 words
The structure of claim 3 wherein said catch includes a support block mounted to said frame for vertical sliding movement relative thereto, a sliding finger slidably mounted for horizontal movement in relation to said vertically sliding support block, biasing means for causing said finger to normally engage one of said latching bars, and means for moving said finger from the normally engaged position with respect to one of said latching bars to a release position, said means operable by the operator of said machine.
Claim 6
Dependent Claim
42 words
The structure of claim 1 and further comprising means for tilting said frame from a vertical, operative position to a position away from the vertical, thereby lifting said post guiding member substantially away from the ground for transport of the post driver.
Claim 7
Dependent Claim
94 words
The structure of claim 1 wherein said means for movably supporting and carrying includes a trailer having a bed and a pair of wheels and means for securing same to a towing vehicle, wherein said frame is pivotally mounted to a baCk portion of the bed of said trailer, and further comprising a hydraulic motor extending between the bed of said trailer and a portion of said frame above the pivotal mounting point of said frame to said bed for pivotally moving said frame from the vertical operative position to a tilted transport position.
References Cited (Backward Citations)
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Cited
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US2487530A
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US2844006A
Cited
US3369616A
Cited
US3658139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |