ELECTRONIC SENSOR

• US 3,812,590 A
• Filed: 04/09/1973
• Issued: 05/28/1974
• Est. Priority Date: 05/18/1972
• Status: Expired due to Term

• Current Assignee: Fritz Nigg, Jean-Claude Risse
• Original Assignee: Fritz Nigg, Jean-Claude Risse
• Inventors: Risse, Jean-Claude, Nigg, Fritz
• Primary Examiner(s): Haroian, Harry N.
• Assistant Examiner(s): Shepperd, John W.
• Application Number:
  US05/348,911
• Time in Patent Office: 414 Days
• Field of Search: 33/172E,172B,148H,148R,171,169R,147N,170
• US Class Current: 33/556
• CPC Class Codes: G01B 7/001 Constructional details of gauge heads G01B7/012 takes precedence
• CPC Class Codes: G01B 7/012 Contact-making feeler heads therefor
• CPC Class Codes: Y10S 33/08 Eccentrics

Abstract

An electronic sensor with lever wherein a lever carrying a feeler is pivoted at the end of a casing, the movements of said feeler being transmitted to the movable element of an electronic transducer by means of a reversing mechanism having two levers whereof the first is fixed to the lever carrying the feeler and pivots about the same shaft as the latter, said mechanism being able to move, counter the action of at least one elastic member, the movable element of the transducer in a same direction in response to any displacement of the lever carrying the measuring key effected from a rest position in the two pivotal directions of the lever carrying the feeler.

Claims

1. An electronic sensor comprising:

a casing;

an arm carrying a feeler and pivoted at one end of the casing;

an electronic transducer located in the casing adjacent the opposite end thereof, said electronic transducer including a movable element, an elastic member mounted in said casing, a reversing mechanism operatively connecting said feeler to said electronic transducer, said reversing mechanism including two levers, the first lever being fixed to the arm carrying the feeler and pivotable about the same shaft as the latter, said reversing mechanism being able to move said movable element of the transducer counter to the action of said elastic member in the same direction in response to any displacement of the arm carrying the feeler effected from a rest position, the second lever of the reversing mechanism being mounted pivotably on the first lever and operatively controlling the movements of the movable element of the transducer, said second lever being subjected to the action of the elastic member and two stop means, the first stop means being fixed to the two levers and operating counter to the action of the elastic member to limit the pivotal movement of the second lever relative to the first lever in the action direction of the elastic member when the first lever is pivoted in a direction counter to the action of the elastic member, the second stop means being located beyond the pivotal shaft of the second lever on the first lever towards the electronic transducer, said second stop means being adjustable relative to said pivotal shaft of the second lever on the first lever and fixed to the casing and functioning counter to the action of the elastic member to limit the joint pivotal movement of the two levers about the pivotal shaft of the first lever in the action direction of the elastic member when the first stop means prevents the pivoting of the second lever relative to the first lever in the action direction of the elastic member and to prevent the pivoting of the second lever relative to the first lever in the action direction of the elastic member when the first lever is pivoted in the action direction of the elastic member whereby when the first lever is pivoted in the direction counter to the action of the elastic member, the second lever is retained by the first stop means and pivots joinTly with the first lever about the pivotal shaft thereof in the direction counter to the action of the elastic member, and when the first lever is pivoted in the action direction of the elastic member the second lever is retained by the second stop means and pivots relative to the first lever in the direction counter to the action of the elastic member while in the rest position when the first lever is not subjected to any pivoting action the two stop means respectively prevent the relative pivoting of the second lever relative to the first lever in the action direction of the elastic member and the joint pivoting of the two levers about the pivotal shaft of the first lever in the action direction of the elastic member.

2. An electronic sensor according to claim 1 wherein the first lever comprises two parallel branches between which is pivoted the second lever.

3. An electronic sensor according to claim 2 wherein the second lever is fixed to a transverse shaft whose ends are conical and engage in the ball-like thrust members respectively located in supports screwed into the parallel branches of the first lever.

4. An electronic sensor according to claim 2 wherein the first stop means comprises a thrust member arranged transversely on the second lever and whereof the ends are engaged in transverse openings made in the branches of the first lever, said openings having larger dimensions than those of the ends of the stop member.

5. An electronic sensor according to claim 1 wherein the second stop means comprises a stop member mounted eccentrically in a support pivoted in the casing said stop member being supported against the second lever.

6. An electronic sensor according to claim 5 wherein the eccentric stop member is axially adjustable.

7. An electronic sensor according to claim 1 wherein the elastic member is located in the transducer and is supported against the movable element of said transducer.