US3755907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for determining the tollerance values of the form curve of a cam
Assignee: Individual
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Filing: 1970-10-23
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Granted: 1973-09-04
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Expires: 1990-10-23
Abstract
Abstract The invention relates to a system for determining the tolerance values of the form curve of a cam, in which the cam is rotated and the actual cam vlaues are measured at each desired angular position. A device for determining the tolerance values of the form curve of a cam is mounted for rotation. On the cam an electrical transducer or caliper for linear measurements rests with its plunger.
Inventors
- 👤 K Kreiensen
- 👤 K Hutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:47
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
Apparatus for determining the tolerance values of the form curve of a cam comprising, in combination; means for rotating the cam about a fulcrum of said cam, means for generating measuring signals representative of the form curve of said cam as said cam is rotated, means for emitting predetermined stored reference signals representative of the form curve of a desired, ideal cam, means for generating tolerance signals representative of the difference between the measuring signals and the reference signals, and means for displaying the tolerance signals whereby the tolerance values of said cam may be determined.
Claim 2
Dependent Claim
96 words
Apparatus for determining the tolerance values of the form curve of a cam comprising, in combination; means for rotating the cam about a fulcrum of said cam, means for generating measuring signals representative of the form curve of said cam as said cam is rotated, means for emitting predetermined stored reference signals representative of the form curve of a desired, ideal cam, means for generating tolerance signals representative of the difference between the measuring signals and the reference signals, and means for displaying the tolerance signals whereby the tolerance values of said cam may be determined.
Claim 3
Dependent Claim
16 words
The apparatus as set forth in claim 1 wherein said rotating means comprises an electrical motor.
Claim 4
Dependent Claim
42 words
The apparatus as set forth in claim 1 wherein said measuring signal generating means comprises an electrical caliper having a plunger directed toward the fulcrum of said cam and adapted to contact the edge of said cam as said cam is rotated.
Claim 5
Dependent Claim
61 words
The apparatus as set forth in claim 1 wherein said reference signal emitting means comprises means connected to said motor for generating impulse signals having a frequency related to the speed of rotation of said motor and means having said reference signals stored therein responsive to said impulse signals for discretely emitting said reference signals in sequence with said impulse signals.
Claim 6
Dependent Claim
28 words
The apparatus as set forth in claim 1 wherein said display means comprises a recorder having an input connected to the output of said tolerance signal generating means.
Claim 7
Dependent Claim
76 words
The combination as set forth in claim 4 wherein said impulse signal generating means comprises a disc having slits defined thereon, said disc connected to said motor for rotation, a light source positioned on one side of said disc and a photocell positioned on the other side of said disc and adapted to conduct an impulse signal whenever light from said source passes through one of the slits on said disc and impinges on said photocell.
Claim 8
Dependent Claim
34 words
The apparatus as set forth in claim 1 wherein said cam rotating means comprises a motor drivingly connected to the fulcrum of said cam and adapted to rotate said cam in discrete angular movements.
Claim 9
Dependent Claim
37 words
The apparatus as set forth in claim 7 wherein said reference signal emitting means is drivingly connected to said motor and adapted to emit reference signals sequentially in response to the discrete angular movement of said cam.
Claim 10
Dependent Claim
54 words
The apparatus as set forth in claim 1 wherein said means for emitting stored reference signals comprises a tape having information representative of the reference signals, a means for converting the information stored in said holes to reference signals as said tape moves thereby and means for drivingly connecting said tape to said motor.
Claim 11
Dependent Claim
57 words
The apparatus as set forth in claim 1 including a means connected to said cam rotating means to generate impulse signals having a frequency related to the speed of rotation of said cam, and switch means responsive to said impulse signals for conducting the measuring signals to said tolerance signal generating means synchronously witH said impulse signals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |