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 Title: |
US4503616:
Parallel motion displacement transducers
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Pullen, Roger J.; Bognor Regis, United Kingdom
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| Assignee: |
Schlumberger Electronics (U.K.), Ltd., Farnborough-Hampshire, United Kingdom
other patents from SCHLUMBERGER ELECTRONICS (U.K.) LIMITED (497415) (approx. 24)
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| Published / Filed: |
1985-03-12
/ 1982-05-06
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| Application Number: |
US1982000375521
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| IPC Code: |
Advanced:
B23Q 17/22;
G01B 7/00;
Core:
more...
IPC-7:
G01B 7/02;
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| U.S. Class: |
Current:
033/558;
Original:
033/172.E;
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| Field of Search: |
033/169 R,174 L,172 L,172 B,147,148
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| Priority Number: |
| 1981-05-12 |
GB1981000014378 |
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| Abstract: |
In a parallel motion finger probe, the parallel motion arm is rigidly connected to a shaft which is supported in a linear ball sleeve bearing, instead of by a parallel motion linkage as in prior finger probes. The parallel motion arm can be biassed in either of its two opposite directions of movement by a leaf spring, whose biassing force and direction can be adjusted by a control wheel having an eccentric groove co-operating with a pin on a spring control arm to which the spring is connected. The leaf spring also serves to prevent rotation of the parallel motion arm about the axis of the bearing. Displacement of the parallel motion arm is sensed by an inductive displacement transducer of the LVDT type.
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| Attorney, Agent or Firm: |
Gaudier, Dale V. ;
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| Primary / Asst. Examiners: |
Haroian, Harry N.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
CH DE FR IT LI SE
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| Family: |
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First Claim:
Show all 9 claims |
I claim:
1. A parallel motion displacement transducer for sensing the position or displacement of an object, the transducer comprising:
- a housing;
- an elongate movable probe member having one end disposed outside the housing and adapted to contact and be moved in a direction transverse to its length by the object;
- a parallel motion member connected to the other end of the probe member and supported by a linear rolling-element bearing disposed within the housing, said bearing having a longitudinal axis, and said parallel motion member constrained by said bearing to move parallel to said axis and thus parallel to the line along which said one end of the probe member is moved by the object;
- displacement sensing means disposed within the housing for sensing the position or displacement of the parallel motion member;
- a leaf spring coupled between the housing and the parallel motion member so as to bias the parallel motion member in one direction along the axis of said bearing while substantially preventing it from rotating about said axis; and
- means, coupled to the leaf spring, for adjusting the magnitude and direction of the biassing force produced by the leaf spring.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 4 U.S. patent(s) that reference this one
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