Zero/span adjustable linkage movement for measuring devices
AssigneeAshcroft, Inc.
InventorsTomiyuki Kuramoto, Yoshikazu Kaneko
Life of this patent
Estimating the term…
Abstract
The present disclosure provides for systems and methods for fabricating measuring devices, e.g., a pressure gauge, thermometer or the like. More particularly, the present disclosure provides for systems and methods for fabricating measuring device assemblies having zero/span adjustable linkage movements (e.g., zero/span adjustable four-bar linkage movements). In general, the present disclosure provides for measuring device assemblies having zero/span adjustable linkage movements, wherein the zero/span adjustable linkage movements do not adversely affect linearity of the measuring device assemblies, and wherein the measuring device assemblies are rugged and able to withstand certain extreme shock and/or vibration conditions.
Claims20
A measuring device assembly comprising:
- a bracket member;
- a condition responsive element mounted with respect to the bracket member, the condition responsive element including an element inlet and an output end configured to produce motion in response to condition changes:
- (i) received at the element inlet and (ii) to which the condition responsive element is sensitive;
- and
- a coupler member having a first end and a second end, the first end mounted with respect to the output end of the condition responsive element via a pin member and the second end mounted with respect to a crank pin of a crank assembly, the coupler member configured and dimensioned to communicate correlated but amplified angular motion of the condition responsive element to a rotatable crank body of the crank assembly for operating an indicator relative to condition changes on a dial face;
- wherein at least a portion of the crank pin defines a first longitudinal axis and at least a portion of the crank body defines a second longitudinal axis;
- and
- wherein the span or degrees of indicator rotation is adjusted by changing the distance between the first longitudinal axis and the second longitudinal axis.
A method for fabricating a measuring device assembly comprising:
- providing a bracket member;
- providing a condition responsive element;
- mounting the condition responsive element with respect to the bracket member, the condition responsive element including an element inlet and an output end configured to produce motion in response to condition changes:
- (i) received at the element inlet and (ii) to which the condition responsive element is sensitive;
- providing a coupler member having a first end and a second end;
- mounting the first end of the coupler member with respect to the output end of the condition responsive element via a pin member;
- mounting the second end of the coupler member with respect to a crank pin of a crank assembly, the coupler member configured and dimensioned to communicate correlated but amplified angular motion of the condition responsive element to a rotatable crank body of the crank assembly for operating an indicator relative to condition changes on a dial face;
- wherein at least a portion of the crank pin defines a first longitudinal axis and at least a portion of the crank body defines a second longitudinal axis;
- and
- wherein the span or degrees of indicator rotation may be adjusted by changing the distance between the first longitudinal axis and the second longitudinal axis.
A measuring device assembly comprising:
- a bracket member;
- a condition responsive element mounted with respect to the bracket member, the condition responsive element including an element inlet and an output end configured to produce motion in response to condition changes:
- (i) received at the element inlet and (ii) to which the condition responsive element is sensitive;
- and
- a coupler member having a first end and a second end, the first end mounted with respect to the output end of the condition responsive element via a pin member and the second end mounted with respect to a crank pin of a crank assembly, the coupler member configured and dimensioned to communicate correlated but amplified angular motion of the condition responsive element to a rotatable crank body of the crank assembly for operating an indicator relative to condition changes on a dial face;
- wherein the crank pin is mounted with respect to the crank body by inserting a first end of the crank pin through an aperture or opening of the crank body;
- wherein at least a portion of the crank pin defines a first longitudinal axis and at least a portion of the crank body defines a second longitudinal axis;
- wherein the span or degrees of indicator rotation is adjusted by changing the distance between the first longitudinal axis and the second longitudinal axis;
- and
- wherein the first longitudinal axis and the second longitudinal axis are parallel to one another.
Dependencies are inferred from the claim text.