US3755906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the radii of curvature of cam discs
Assignee: Individual
•
Filing: 1970-06-17
•
Granted: 1973-09-04
•
Expires: 1990-06-17
Abstract
Abstract An apparatus for measuring the radii of curvature of cam discs comprises a sensitive tracer of which the housing bears a headpiece with two fixed measuring points, the tracer point to be applied to a cam being situated between these latter. A mounting support for the sensitive tracer, in order to enable the position of the latter to be fixed, is pivotable about a swivel shaft which is preferably situated on one and the same line with one of the measuring points but perpendicular to the measuring plane and is displaceable parallel to itself. A shaft which is likewise perpendicular to the measuring plane and thus parallel to the swivel shaft of the mounting support serves for rotating the cam disc of which the radius of curvature is to be measured. For guiding the apparatus in the measuring plane, the swivel shaft of the mounting support is articulated to one end of a connecting rod of which the other end is provided with a bore parallel to that which accommodates the swivel shaft, the connecting rod being pivotally connected, via said bore and by means of a pin, to a bearing member displaceable, in the measuring plane or parallel thereto, along a straight and preferably horizontal guide.
Inventors
- 👤 R Unterberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/213
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
221 words
An apparatus for measuring the radii of curvature of a cam disc comprising: a. a sensitive tracer mechanism including a housing carrying a head piece having two fixed measuring points and a tracer measuring point disposed for vertical movement with respect to and between said fixed points, b. said measuring points being aligned and located within a measuring plane, c. a mounting support means for the sensitive tracer mechanism, d. said mounting support means including a swivel shaft, e. said swivel shaft being displaceable parallel with respect to itself, f. said cam disc being rotatably mounted on a cam supporting shaft for rotation about an axis perpendicular to the measuring plane in which the radii of curvature is to be measured, g. said cam disc supporting shaft being disposed perpendicularly to the measuring plane and parallel to said swivel shaft, and h. means for guiding the sensitive tracer mechanism along the cam surface for which the radii of curvature is being measured, i. said gUiding means including a connecting rod and a bearing member displaceably disposed along a straight guide surface, j. said connecting rod being pivotally connected at one end to said swivel shaft and pivotally connected at the other end thereof to said bearing member, k. said connecting rod being movable in a plane parallel to the measuring plane.
Claim 2
Independent Claim
221 words
An apparatus for measuring the radii of curvature of a cam disc comprising: a. a sensitive tracer mechanism including a housing carrying a head piece having two fixed measuring points and a tracer measuring point disposed for vertical movement with respect to and between said fixed points, b. said measuring points being aligned and located within a measuring plane, c. a mounting support means for the sensitive tracer mechanism, d. said mounting support means including a swivel shaft, e. said swivel shaft being displaceable parallel with respect to itself, f. said cam disc being rotatably mounted on a cam supporting shaft for rotation about an axis perpendicular to the measuring plane in which the radii of curvature is to be measured, g. said cam disc supporting shaft being disposed perpendicularly to the measuring plane and parallel to said swivel shaft, and h. means for guiding the sensitive tracer mechanism along the cam surface for which the radii of curvature is being measured, i. said gUiding means including a connecting rod and a bearing member displaceably disposed along a straight guide surface, j. said connecting rod being pivotally connected at one end to said swivel shaft and pivotally connected at the other end thereof to said bearing member, k. said connecting rod being movable in a plane parallel to the measuring plane.
Claim 3
Dependent Claim
21 words
An apparatus as defined in claim 1 wherein the bearing member consists of a slide guide disposed in a mounting support.
Claim 4
Dependent Claim
72 words
An apparatus as defined in claim 1 wherein means is provided for measuring the angle between the longitudinal axis of the guiding rod and the straight guide surface, the angle between the longitudinal axis of the connecting rod and the axis of the tracer measuring point, the angle of rotation of the cam disc about its supporting shaft, and the longitudinal displacement of the mounting support means for the sensitive tracer mechanism.
Claim 5
Dependent Claim
32 words
An apparatus as defined in claim 2 wherein a measuring means is provided for reading the displacement of the mounting support in the guide member, said measuring means being a graduated scale.
Claim 6
Dependent Claim
34 words
An apparatus as defined in claim 1 wherein said swivel shaft is located on one and the same line with one of the fixed measuring points and is arranged perpendicular to the measuring plane.
Claim 7
Independent Claim
197 words
An apparatus for measuring the radii of curvature of a cam disc comprising: a. a sensitive tracer mechanism including a housing carrying a head piece having two fixed measuring points and a tracer measuring point disposed for vertical movement with respect to and between said fixed points, b. said measuring points being aligned and located within a measuring plane, c. a mounting support means for the sensitive tracer mechanism, d. said mounting support means including a swivel shaft, e. said swivel shaft being displaceable parallel with respect to itself, f. said cam disc being rotatably mounted on a cam supporting shaft for rotation about an axis perpendicular to the measuring plane in which the radii of curvature is to be measured, g. said cam disc supporting shaft being disposed perpendicularly to the measuring plane and parallel to said swivel shaft, and h. means for guiding the sensitive tracer mechanism along the cam surface for which the radii of curvature is being measured, i. said guiding means including a guide member and a guide mounting support, j. said guide member extending vertically from said mounting support means and situated in said guide mounting support which is horizontally displaceable.
Claim 8
Independent Claim
197 words
An apparatus for measuring the radii of curvature of a cam disc comprising: a. a sensitive tracer mechanism including a housing carrying a head piece having two fixed measuring points and a tracer measuring point disposed for vertical movement with respect to and between said fixed points, b. said measuring points being aligned and located within a measuring plane, c. a mounting support means for the sensitive tracer mechanism, d. said mounting support means including a swivel shaft, e. said swivel shaft being displaceable parallel with respect to itself, f. said cam disc being rotatably mounted on a cam supporting shaft for rotation about an axis perpendicular to the measuring plane in which the radii of curvature is to be measured, g. said cam disc supporting shaft being disposed perpendicularly to the measuring plane and parallel to said swivel shaft, and h. means for guiding the sensitive tracer mechanism along the cam surface for which the radii of curvature is being measured, i. said guiding means including a guide member and a guide mounting support, j. said guide member extending vertically from said mounting support means and situated in said guide mounting support which is horizontally displaceable.
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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) | 1976-09-03 | 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 |