US4098003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distortion detection device, notably for motor vehicle frames
Assignee: Celette SA
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Filing: 1977-05-18
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Granted: 1978-07-04
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Expires: 1997-05-18
Abstract
Abstract This device for detecting possible distortions in a frame or in the base of a chassis-cum-body of a motor vehicle or other frame structures comprises a pair of carriages slidably mounted on rigid support members, each carriage having pivotally and separately mounted thereon a pair of arms carrying measuring rods at their outer ends, each arm being rigid with a toothed wheel so that the toothed wheels of each pair of arms mesh with each other and the arms constantly form symmetrical angles, like the two legs of a compass, irrespective of their positions, in relation to the longitudinal center line of the device which, for checking the presence of possible distortions in the frame or body base, is caused to register with the longitudinal center line of the frame or body base, whereby the measuring rods may be caused to register with predetermined reference points of the frame or body base. A tape-measure disposed between the two carriages affords an easy reading of the distance therebetween, and drive means are provided for moving the carriages to their proper checking positions.
Inventors
- 👤 Gilbert Negrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:13
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/14; G01B5/0025; G01B5/20; G01B5/207; G01B5/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
147 words
Device for detecting a possible distortion in a given structure by checking predetermined reference points of said structure which are disposed symmetrically in relation to the longitudinal center line of said structure, comprising in combination a support adapted to be disposed horizontally beneath the structure to be checked by causing the longitudinal center line of said support to register with the longitudinal center line of said structure, a pair of carriages slidably mounted on said support, a pair of horizontal arms pivotally mounted on each carriage and forming somewhat the two arms of a compass, mechanical means interconnecting the two arms of each carriage and adapted constantly to keep said two arms in a symmetrical angular position in relation to said longitudinal center line, and means adapted to be fitted to the outer ends of said compass arms for checking predetermined reference points provided on said structure.
Claim 2
Dependent Claim
147 words
Device for detecting a possible distortion in a given structure by checking predetermined reference points of said structure which are disposed symmetrically in relation to the longitudinal center line of said structure, comprising in combination a support adapted to be disposed horizontally beneath the structure to be checked by causing the longitudinal center line of said support to register with the longitudinal center line of said structure, a pair of carriages slidably mounted on said support, a pair of horizontal arms pivotally mounted on each carriage and forming somewhat the two arms of a compass, mechanical means interconnecting the two arms of each carriage and adapted constantly to keep said two arms in a symmetrical angular position in relation to said longitudinal center line, and means adapted to be fitted to the outer ends of said compass arms for checking predetermined reference points provided on said structure.
Claim 3
Dependent Claim
60 words
Device as recited in claim 1, wherein the pair of pivoting arms of each carriage are carried by a pair of pivot pins disposed on either side of the longitudinal center line of the support, the mechanical means interconnecting said arms of each pair consisting of a pair of meshing toothed wheels each carried by one arm of the pair.
Claim 4
Dependent Claim
40 words
Device as recited in claim 1, wherein said check means adapted to be fitted to the outer ends of said arms on each carriage consist of detachable vertical rods, the device comprising several interchangeable sets of rods having different lengths.
Claim 5
Dependent Claim
43 words
Device as recited in claim 3, wherein said rod adapted to be fitted to the outer ends of said arms on each carriage are mounted for vertical sliding movement on said outer ends and associated with graduated rules for facilitating their useful height.
Claim 6
Dependent Claim
25 words
Device as recited in claim 1, wherein a measurement means is provided for setting the two carriages at the desired relative distance from each other.
Claim 7
Dependent Claim
42 words
Device as recited in claim 5, wherein said measurement means comprises a tape-measure such as a double-meter tape of which the case is carried by one of the carriage while the free end of the tape is attached to the other carriage.
Claim 8
Dependent Claim
50 words
Device as recited in claim 1, wherein a set of several rules each adapted to position the two carriages in a series of different positions are provided for checking several groups of reference points on the structure, each rule corresponding to a predetermined type of the structure to be checked.
Claim 9
Dependent Claim
39 words
Device as recited in claim 1, wherein each carriage comprise drive means and braking and locking means, said drive means consisting of a rotary wheel held in frictional driving contact with one of the longitudinal members of the device.
Claim 10
Dependent Claim
48 words
Device as recited in claim 1, wherein the support of the two carriages consists of a flat frame comprising a pair of parallel spaced longitudinal members on which said carriages are slidably mounted, said pair of parallel spaced longitudinal members being interconnected by cross members at either ends.
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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |