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US 7,125,000 B1Granted
Post puller
OwnerDaniel R. Saavedra, Nancy Fritts-Saavedrainventors
Life of this patent
Estimating the term…
Abstract
A winch-actuated post puller is disclosed which applies a substantially linear withdrawal force to a post to be removed from the ground. A post gripper is attached to a slider that rides on a vertical shaft. The slider is raised by means of a cable attached to a winch at or near the top of the vertical shaft. In one preferred embodiment, the winch is actuated by a reciprocating lever acting on a ratchet wheel via a pawl.
Claims3
A post puller comprising:
- a base for supporting the post puller on the ground;
- a substantially vertical shaft connected at a first end to the base;
- a post gripper in sliding engagement with the shaft;
- a winch mounted on a second end of the vertical shaft;
- a cable attached to the post gripper and the winch such that winding the cable on the winch pulls the post gripper up the vertical shaft;
- and,
- a stand-off proximate the second end of the vertical shaft for preventing contact between the winch and a post being pulled from the ground by the post puller.
4 more elements
A post puller comprising:
- a base for supporting the post puller on the ground;
- a substantially vertical shaft connected at a first end to the base;
- a post gripper comprising a section of U-channel steel in sliding engagement with the shaft;
- a winch mounted on a second end of the vertical shaft;
- and,
- a cable attached to the post gripper and the winch such that winding the cable on the winch pulls the post gripper up the vertical shaft.
3 more elements
A post puller comprising:
- a base for supporting the post puller on the ground;
- a substantially vertical shaft connected at a first end to the base;
- a post gripper in sliding engagement with the shaft;
- a winch mounted on a second end of the vertical shaft;
- a cable attached to the post gripper and the winch such that winding the cable on the winch pulls the post gripper up the vertical shaft;
- and,
- a cable guide on the vertical shaft for maintaining alignment of the cable with the winch.
4 more elements
Dependencies are inferred from the claim text.