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US 2013/0239754 A1Published application
Squeezing head torque tool
AssigneeFrancis Torq/Lite, Inc.
InventorsDale Francis, Nic Francis, William P. Bernard, Oswald J. Bernard, Patrick V. Delbasty
Life of this patent
Estimating the term…
Abstract
A uniquely designed torque wrench having a torque body, the torque body attached to a drive head, the drive head entering a contracted stated during extension of a rod of a hydraulic cylinder, and entering an expanded state during the retraction of the rod of a hydraulic cylinder.
Claims22
An improved torque wrench system, comprising:
- (a) a torque wrench body;
- (b) a drive head rotatively mounted on a first end of the torque wrench body, the drive head having expanded and contracted states;
- (c) a hydraulically powered cylinder mounted on the wrench body, the cylinder powering a rod between extended and retracted states, the rod being operatively connected to the drive head;
- (d) wherein the rod extending from the cylinder causes the drive head to enter the contracted state and the rod retracting into the cylinder causes the drive head to enter the expanded state.
1 more element
An improved torque wrench system, comprising:
- (a) a torque body;
- (b) a drive head rotationally connected to the torque body;
- (c) a fluid cylinder operatively connected to the drive head and the torque body;
- (d) with the drive head having a relaxed state with an opening of a first size, for fitting over an item to be tightened or loosened such as a joint of tubing or pipe,
- (e) wherein the fluid cylinder during the process of causing rotation of the drive head in a first direction causes the drive head to enter a squeezing state wherein the opening reduces to a second size which is smaller than the first size, thereby causing frictional forces between the drive head and the item to be tightened or loosened during turning in the first direction, and
- (f) wherein the fluid cylinder in the process of causing rotation of the drive head in a second direction, which second direction is the opposite direction of the first direction, causes the drive head to enter a relaxed state wherein the frictional forces between the drive head and the item to be tightened or loosened are substantially reduced in relation to the frictional forces generated during the squeezing state.
3 more elements
An improved torque wrench system, comprising:
- (a) a torque body;
- (b) a drive head rotationally connected to the torque body;
- (c) a fluid cylinder operatively connected to the drive head and the torque body;
- (d) with the drive head having a relaxed state with an opening of a first size, for fitting over an item to be tightened or loosened such as a joint of tubing or pipe,
- (e) wherein the fluid cylinder during the process of causing rotation of the drive head in a first direction causes the drive head to enter a squeezing state wherein the opening reduces to a second size which is smaller than the first size, thereby causing frictional forces between the drive head and the item to be tightened or loosened during turning in the first direction, and
- (f) wherein the fluid cylinder in the process of causing rotation of the drive head in a second direction, which second direction is the opposite direction of the first direction, causes the drive head to enter a relaxed state wherein the opening is of a larger size than the second size.
3 more elements
Dependencies are inferred from the claim text.