US3742610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring device of two dimensional displacements
Assignee: GENEVOISE INSTR PHYSIQUE
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Filing: 1971-01-12
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Granted: 1973-07-03
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Expires: 1991-01-12
Abstract
Abstract The invention concerns a two dimensional displacement measuring device, comprising a mechanical feeler fixed to a lateral measuring lever hinged on a movable member of a deformable parallelogram about an axis which is perpendicular to the direction of displacement of this movable member and two detectors delivering electrical signals the amplitude of which varies with displacement. These detectors are actuated the one by the said movable member and the other by the said measuring lever. Adjusting means are provided for the measuring pressure of the feeler both axially and laterally as well as restraining means canceling selectively the sensitivity of the feeler either axially or laterally.
Inventors
- 👤 M Calame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/004; G01B7/008; G01B7/012
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
A two dimensional displacement measuring device, comprising a frame, a mechanical feeler, a lateral movement measuring lever secured rigidly to the feeler, means defining a deformable parallelogram having one side fixed relative to the frame and having a movable member comprising the opposite side of said parallelogram free for translational movement, means hingedly mounting said lever on said movable member for swinging movement of said lever about an axis perpendicular to the direction of movement of said movable member, two detectors, one mounted on said frame in operative engagement with said movable member and delivering electrical signals the amplitude of which varies as the amount of mechanical displacement of said movable member relative to said frame and the other mounted on said measuring member in operative engagement with said lever, means to apply and to adjust the measuring pressure of said feeler both axially and laterally, and restraining means for opposing said swinging movement and for selectively preventing said translational movement.
Claim 2
Dependent Claim
161 words
A two dimensional displacement measuring device, comprising a frame, a mechanical feeler, a lateral movement measuring lever secured rigidly to the feeler, means defining a deformable parallelogram having one side fixed relative to the frame and having a movable member comprising the opposite side of said parallelogram free for translational movement, means hingedly mounting said lever on said movable member for swinging movement of said lever about an axis perpendicular to the direction of movement of said movable member, two detectors, one mounted on said frame in operative engagement with said movable member and delivering electrical signals the amplitude of which varies as the amount of mechanical displacement of said movable member relative to said frame and the other mounted on said measuring member in operative engagement with said lever, means to apply and to adjust the measuring pressure of said feeler both axially and laterally, and restraining means for opposing said swinging movement and for selectively preventing said translational movement.
Claim 3
Dependent Claim
26 words
Device according to claim 1, in which the deformable parallelogram comprises resilient blades connecting the upper and lower ends of the movable member to said frame.
Claim 4
Dependent Claim
80 words
Device according to claim 2, in which the means to apply and to adjust the measuring pressure in the axial direction comprises an eccentric pivoted on the frame and two springs, each spring being fixed between one point of this eccentric and one of the ends of the movable member, so that in neutral position the forces applied by the springs on the movable member compensate for the weight of thE movable member and the parts which are fixed thereon.
Claim 5
Dependent Claim
25 words
Device according to claim 1, in which the hinge of the measuring lever on said movable member is provided by at least one resilient blade.
Claim 6
Dependent Claim
37 words
Device according to claim 4, in which the restraining means comprises a screw fitted in a tapped bore fixed relative to said frame and movable against said movable member to prevent axial displacement of said movable member.
Claim 7
Dependent Claim
59 words
Device according to claim 5, in which the restraining means comprise further two blade springs fixed at one of their ends on the movable member and the free ends of which are applied against the opposed sides of two rollers, the one roller being mounted on the movable member and the other roller being mounted on the measuring lever.
Claim 8
Dependent Claim
96 words
Device according to claim 4, in which the means to apply and to adjust the measuring pressure comprises a slide displaceable according to a direction which is approximately tangential to the direction of swinging movement of the free end of the measuring lever, and two springs having connections to this free end of the measuring lever and to an end of the slide so that in neutral position of the slide the forces applied by the springs on the measuring lever compensate when this lever is equally in its neutral position determined by the restraining means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |