US 7,062,992 B2 · Constant rotation rotary torque multiplier

Abstract

A wrench with torque augmenting means consisting of an output socket wrench which utilizes a ratchet arrangement and which includes an input cog that is adapted to receive an external drive tool. The input cog constantly rotates under the influence of the external drive tool and a camming surface formed on the arm of the input cog coacts with a cam follower surface on the drive plate of the output to move the drive plate. A spring within the housing of the apparatus connected to the drive plate will cause the drive plate to return to its initial position where the action of the camming surface of the rotating cog arm from the input cog can then repeat its function. Rotary movement of the output in one direction is accomplished during the oscillation of the drive plate by means of the ratchet positioned within the drive plate.

Claims10

Dependent claims

A wrench with torque augmenting means comprising:

a housing;
a continuously rotatable power input in the housing for connecting a rotary source of power to the housing;
a torque output in the housing;
the torque output operatively connected to the power input to move from an initial position to a final position;
and
means in the housing operatively connected to the torque output to move the torque output back to the initial position as power input continuously rotates.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/263,527Filed 31 Oct 2005 · us provisional application

Priority

29 Oct 2004

Published

US 2006/0090606 A14 May 2006

Granted

20 Jun 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

B25B 17/02
Hand-driven gear-operated wrenches or screwdrivers: providing for torque amplification
B25B 13/463
The ratchet parts engaging in a direction radial to the tool operating axis: a pawl engaging an externally toothed wheel
B25B 21/004
Portable power-driven screw or nut setting or loosening tools; ; Attachments for drilling apparatus serving the same purpose: of the ratchet type
B25B 21/005
Of the ratchet type: driven by a radially acting hydraulic or pneumatic piston

Constant rotation rotary torque multiplier

Life of this patent

Constant rotation rotary torque multiplier

Life of this patent

Abstract

Claims10