Piston rod runout gauge
OwnerKenneth D. Klosterinventor
Life of this patent
Estimating the term…
Abstract
An instrument to measure the concentricity of a piston rod relative to its cylinder, has an elongate cylindrical support on which are slidably mounted a pair of brackets provided with V-shaped notches embracingly to engage the cylinder and hold the support in parallel relation to the cylinder. At the outer end of the support and disposed at right angles thereto is a feeler probe to engage the piston rod. A calibrated dial, having an associated pointer, is carried by the support and the pointer is articulated to the feeler probe for causing the pointer to indicate in the dial the degree of concentricity of the piston rod.
Claims4
A piston rod runout gauge for determining the concentricity of the rod with respect to its cylinder comprising:
- a. an elongate support providing a handle for manipulating the gauge, said support having a longitudinal axis;
- b. cylinder engaging means for holding said support in parallel relation to the cylinder, said engaging means including a pair of spaced apart brackets shiftable along said support, said brackets extending generally normal to the longitudinal axis of said support and including V-shaped notches in the outer ends of said brackets for engaging the cylinder;
- c. an actuating device in the end of said support to engage the piston rod, said device spaced from said brackets and including a feeler probe extending normal to the longitudinal axis of said support in parallel relation to said brackets;
- and
- d. means responsive to said actuating device to indicate the degree of concentricity of the piston rod relative to its cylinder.
Dependencies are inferred from the claim text.