Patent US3590645A successfully refreshed from Google Patents.
US3590645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional stepping mechanism
Assignee: HP Inc
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Filing: 1969-05-21
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Granted: 1971-07-06
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Expires: 1989-05-21
Abstract
Abstract A disclike camming wheel has a pattern of intersecting grooves cut in one face thereof. A lever-operated pin, biased to a center position within one of the grooves, is operated radially of the disc face in such a manner that when the pin is moved outwardly from the axis of rotation, the cam wheel is rotated in the opposite direction. The depth of tee grooves is varied such that a detent action is achieved to hold the cam wheel in a fixed position.
Inventors
- 👤 Salvatore J Magri
- 👤 John E Nidecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:39
CPC Classifications
F; F16; F16H; F16H27/00; F16H27/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/1856
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
232 words
A stepping mechanism for converting lineal motion into rotary motion comprising: a disclike cam member having an axis of rotation and mounted for rotation about said axis; said cam member having a face substantially perpendicular to said axis of rotation with first and second sets of grooved track segments formed therein; each track segments of said first set intersecting a different track segment of said second set; each segment of said first set interconnecting at either end with one end of a different track segment of said second set; a pin adapted to ride in said grooved track segments, thereby to impart rotary motion to said cam member when operated in the plane of said cam face; spring bias means for spring biasing said pin to a radial position on said cam face corresponding to any of the intersections of track segments of said first set with track segments of said second set; and means connected to said pin for imparting generally radial movement to said pin in a first direction causing said pin to traverse one of said first set of track segments to the interconnection with an adjoining one of said second set of track segments and thereby causing rotation of said cam member in a first sense, said spring bias means returning said pin to said radial position along said adjoining one of said second set of track segments.
Claim 2
Dependent Claim
232 words
A stepping mechanism for converting lineal motion into rotary motion comprising: a disclike cam member having an axis of rotation and mounted for rotation about said axis; said cam member having a face substantially perpendicular to said axis of rotation with first and second sets of grooved track segments formed therein; each track segments of said first set intersecting a different track segment of said second set; each segment of said first set interconnecting at either end with one end of a different track segment of said second set; a pin adapted to ride in said grooved track segments, thereby to impart rotary motion to said cam member when operated in the plane of said cam face; spring bias means for spring biasing said pin to a radial position on said cam face corresponding to any of the intersections of track segments of said first set with track segments of said second set; and means connected to said pin for imparting generally radial movement to said pin in a first direction causing said pin to traverse one of said first set of track segments to the interconnection with an adjoining one of said second set of track segments and thereby causing rotation of said cam member in a first sense, said spring bias means returning said pin to said radial position along said adjoining one of said second set of track segments.
Claim 3
Dependent Claim
90 words
A mechanism according to claim 1 wherein said pin movement imparting means imparts generally radial movement to said pin in a second substantially opposite direction causing said pin to traverse one of said first set of track segments to the interconnection with an adjoining one of said second set of track segments and thereby causing rotation of said cam member in a second sense opposite said first sense, said spring bias means returning said pin to said radial position along said adjoining one of said second set of track segments.
Claim 4
Dependent Claim
22 words
A mechanism in accordance with claim 1 wherein said pin is biased to ride against the bottom of said grooved track segments.
Claim 5
Dependent Claim
111 words
A mechaniam in accordance with claim 3 wherein the depth of each track segment of said first set decreases linearly as a function of the distance from the intersection with a track segment of said second set, whereby said pin serves as a detent for said cam member and the depth of each track segment of said second set increases linearly as a function of the distance from each said intersection, the depth of each track segment of said second set at each said intersection being less than that of each track segment of said first set, thereby to separate each track segment of the respective sets by a stepped portion.
Claim 6
Dependent Claim
91 words
A mechanism in accordance with claim 4 wherein said pin movement imparting means imparts generally radial movement to said pin in a second substantially opposite direction causing said pin to traverse one of said first set of track segments to the interconnection with an adjoining one of said second set of track segments and thereby causing rotation of said cam member in a second sense opposite said first sense, said spring bias means returning said pin to said radial position along said adjoining one of said second set of track segments.
Claim 7
Dependent Claim
18 words
A mechanism in accordance with claim 5 wherein each of said tracks has substantially the same maximum depths.
Claim 8
Dependent Claim
78 words
A mechanism according to claim 6 wherein said pin movement imparting means includes a lever arm pivotally mounted to pivot about a second axis parallel to said axis of rotation, said pin being mounted in one end of said lever arm at a predetermined distance from the pivotal mounting point, each of said second set of track segments having a radius equal to said predetermined distance, thereby to facilitate the return of said pin to said radial position.
Claim 9
Dependent Claim
23 words
A mechanism according to claim 7 wherein each of said first set of track segments has a radius less than said predetermined distance.
Claim 10
Dependent Claim
17 words
A mechanism according to claim 1 wherein said track segments form a symMetrical pattern about said axis.
Claim 11
Dependent Claim
40 words
A mechanism in accordance with claim 1 wherein each of said first set of track segments has a first arcuate configuration and each of said second set of track segments has a second arcuate configuration different than said first configuration.
References Cited (Backward Citations)
US630830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |