Electrical torque-indicating wrench
AssigneeNational Formosa University
InventorWen-Hwei Liao
Life of this patent
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Abstract
An electrical torque-indicating wrench of the present invention, capable of providing accurate measurements, comprising: a wrench body having a head to engage and turn a workpiece, and a stem having two supporting portions protruding from its side surface or the cavity surface of the stem; a handle coupled with the stem and operable to turn the head about the rotational axis; strain bodies including strain gages, said strain bodies disposed on said support means are adapted to provide measured values of the torque; and a torque indicating device which is connected to said strain bodies transfers the measured values into a visual presentation for viewing.
Claims5
An electrical torque-indicating wrench, comprising:
- a wrench body having a head which is adapted to engage a workpiece, and a stem which is extended from the head, wherein the stem has at least one supporting portion protruding from a surface area of the wrench body;
- a handle coupled with the stem, wherein the handle is utilized to turn the head about a rotational axis;
- at least one strain body, each strain body having at least one strain gage is disposed on the supporting portion for getting measured values of torque applied to the electrical torque-indicating wrench, the strain body is a flat plate with two end portions and one middle portion, one hole is provided on the each end portion, the strain body further comprises at least one flex portion which is a connection of the middle portion and one of the end portions;
- and
- a torque indicating device connecting to the strain gage, wherein the torque indicating device transfers the measured values into a visual presentation for viewing.
An electrical torque-indicating wrench, comprising:
- a wrench body having a head which is adapted to engage a workpiece, and a stem which is extended from the head, wherein the stem has at least one cavity and at least one supporting portion protruding from a surface area of the cavity;
- a handle coupled with the stem, wherein the handle is utilized to turn the head about a rotational axis;
- at least one strain body, each strain body having at least one strain gage is disposed on the supporting portion for getting measured values of torque applied to the electrical torque-indicating wrench, the strain body is a flat plate with two end portions and one middle portion, one hole is provided on the each end portion, the strain body further comprises at least one flex portion which is a connection of the middle portion and one of the end portions;
- and
- a torque indicating device connecting to the strain gage, wherein the torque indicating device transfers the measured values into a visual presentation for viewing.
Dependencies are inferred from the claim text.