US4085508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin template cam tracker
Assignee: Individual
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Filing: 1976-12-21
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Granted: 1978-04-25
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Expires: 1996-12-21
Abstract
Abstract Structure for following a cam pattern for moving or retaining a tool, workpiece or the like in predetermined relation to a cam surface including a master cam having a peripheral cam surface defining a pattern of movement for a tool, workpiece or the like engaged by a roller or cam follower which is driven for moving a tool, workpiece or the like in accordance with the pattern on the stationary master cam together with a control cam or member stationarily spaced from the master cam and including a pattern defined thereon in opposed relation to the pattern defined on the master cam. A control cam follower is supported in a spring biased manner to engage the control cam and is associated with the master cam follower to retain it in engagement with the master cam without binding and to provide accurate movement of the tool, workpiece or the like in accordance with the cam pattern on the master cam.
Inventors
- 👤 Josef Gyongyosi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:23
CPC Classifications
B; B05; B05B; B05B13/00; B05B13/02; B05B13/0221; B23; B23Q; B23Q11/00; B23Q11/001; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B23Q35/103; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/38; B23Q5/385; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/302968; Y10T409/303024
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
234 words
A cam tracker comprising a master cam having a master cam surface thereon, means supporting said master cam, a master cam follower, a drive shaft supporting said cam follower in rolling contact with said cam surface on said master cam, means rotatably supporting said drive shaft, drive means connected with said drive shaft for rotating the drive shaft and cam follower thereby moving the cam follower and cam surface in relation to each other, a control cam having a control cam surface thereon, means supporting said control cam in axially spaced, fixed relation to the master cam with the control cam surface being in radially opposed relation to the master cam surface, a control cam follower, means supporting said control cam follower in rolling contact with said control cam surface with the control cam follower being freely rotatably supported by its supporting means, said supporting means for the cam follower including a movable mounting member rotatably journaling said control cam follower, housing means, rotatably connected to said drive shaft means movably supporting said mounting member from said housing means, and spring means connected between said mounting member and said housing means to resiliently bias the mounting member in one direction to resiliently retain the control cam follower in rolling contact with the control cam surface and to resiliently bias said master cam follower in the opposite direction into rolling contact with said master cam.
Claim 2
Dependent Claim
234 words
A cam tracker comprising a master cam having a master cam surface thereon, means supporting said master cam, a master cam follower, a drive shaft supporting said cam follower in rolling contact with said cam surface on said master cam, means rotatably supporting said drive shaft, drive means connected with said drive shaft for rotating the drive shaft and cam follower thereby moving the cam follower and cam surface in relation to each other, a control cam having a control cam surface thereon, means supporting said control cam in axially spaced, fixed relation to the master cam with the control cam surface being in radially opposed relation to the master cam surface, a control cam follower, means supporting said control cam follower in rolling contact with said control cam surface with the control cam follower being freely rotatably supported by its supporting means, said supporting means for the cam follower including a movable mounting member rotatably journaling said control cam follower, housing means, rotatably connected to said drive shaft means movably supporting said mounting member from said housing means, and spring means connected between said mounting member and said housing means to resiliently bias the mounting member in one direction to resiliently retain the control cam follower in rolling contact with the control cam surface and to resiliently bias said master cam follower in the opposite direction into rolling contact with said master cam.
Claim 3
Dependent Claim
41 words
The structure as defined in claim 1 wherein said master cam surface and control cam surface are in axial alignment and are stationarily supporting with the cam followers moving along the cam surfaces when the master cam follower is rotatably driven.
Claim 4
Dependent Claim
155 words
The structure as defined in claim 2 wherein said housing means is mounted directly on said drive shaft axially outwardly of said master cam follower, bearing means supporting the housing means from the drive shaft to enable the housing means to remain stationary during rotation of the drive shaft, said means supporting the mounting member from the housing means including a transverse pivot means supporting the mounting member from the housing means for pivotal movement about an axis transverse to the rotational axis of the drive shaft, said spring means including a compression coil spring between the mounting member and housing means to bias the mounting member in one direction about the pivot means, said control cam follower including a roller journaled on the mounting member with the axis of rotation generally paralleling the drive shaft whereby lateral forces exerted on the cam followers by the cam surfaces will be in opposition to each other.
Claim 5
Dependent Claim
133 words
The structure as defined in claim 2 wherein said housing means is mounted on the supporting means for said drive shaft axially of said master cam follower, said means supporting the mounting member from the housing means including a transverse pivot means supporting the mounting member from the housing means for pivotal movement about an axis transverse to the rotational axis of the drive shaft, said spring means including a compression coil spring between the mounting member and housing means to bias the mounting member in one direction about the pivot means, said control cam follower including a roller journaled on the mounting member with the axis of rotation generally paralleling the drive shaft whereby lateral forces exerted on the cam followers by the cam surfaces will be in opposition to each other.
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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |