×

Displacement measuring instrument

  • US 4,527,336 A
  • Filed: 06/24/1983
  • Issued: 07/09/1985
  • Est. Priority Date: 07/02/1982
  • Status: Expired due to Fees
First Claim
Patent Images

1. A displacement measuring instrument, comprising:

  • a case body;

    a movable member displaceably secured to said case body and capable of abutting at one end thereof against a workpiece to be measured, said movable member having a rotatably supported roller on the other end thereof;

    a rotatable shaft mounted on said case body;

    a cam supported on said shaft and rotatable therewith, said cam having an Archimedean spiral surface at the periphery thereof, against which said roller is rotatably engaged;

    a rotator secured to said shaft and being concentrically oriented with said cam;

    a rotatable follower member engageable with said rotator, said cam, said rotator and said follower member being arranged such that said follower member makes two or more revolutions per one revolution of said cam; and

    indicating means for indicating a displacement value of said movable member in response to a rotation of said follower member.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×