Patent US3628463A successfully refreshed from Google Patents.
US3628463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed-control device
Assignee: Acme Steel Co
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Filing: 1970-02-20
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Granted: 1971-12-21
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Expires: 1990-02-20
Abstract
Abstract A speed-control device for controlling the speed of a moveable assembly at a given point in a predetermined path of travel along a guidance rail includes an inclined cam adjacent the point. At least a pair of cam followers are mounted on a support member, which is mounted on and moveable relative to the moveable assembly, so as to engage the guidance rail to establish a first reference plane and the inclined cam which establishes a second reference plane. Both followers are continuously spaced a given distance from each other and are simultaneously moveable as the distance between the assembly and the guidance rail varies to maintain said given distance. When one of the followers contacts the inclined cam, it is moved so as to vary the distance between the respective followers and variably actuate a rheostat to reduce the speed of the assembly.
Inventors
- 👤 Gerald M Kwiatkowski
- 👤 Paul E Redelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:20
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/07; B66F9/072; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0407; B65G1/0421
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A device for variably controlling the speed of an assembly which is movable relative to another assembly, comprising: first reference plane establishing means defining a first reference plane, second reference plane establishing means defining a second reference plane, the distance between said first and second reference planes being variable, follower positioning means including means mounting said follower positioning means for movement toward said first reference plane when the distance therebetween is varied, said follower positioning means positioning first follower means in said first reference plane and also normally positioning second follower means a given distance relative to said first follower means, said positioning means including means responsive to the contact and movement of one of said second follower means and said second reference plane relative to the other to vary said given distance between said first and second follower means, and control means which provides a variable output in response to the variation of distance between said first and second follower means.
Claim 2
Independent Claim
162 words
A device for variably controlling the speed of an assembly which is movable relative to another assembly, comprising: first reference plane establishing means defining a first reference plane, second reference plane establishing means defining a second reference plane, the distance between said first and second reference planes being variable, follower positioning means including means mounting said follower positioning means for movement toward said first reference plane when the distance therebetween is varied, said follower positioning means positioning first follower means in said first reference plane and also normally positioning second follower means a given distance relative to said first follower means, said positioning means including means responsive to the contact and movement of one of said second follower means and said second reference plane relative to the other to vary said given distance between said first and second follower means, and control means which provides a variable output in response to the variation of distance between said first and second follower means.
Claim 3
Dependent Claim
24 words
The device of claim 1 wherein said second reference plane establishing means comprises an elongated cam surface inclined relative to said first reference plane.
Claim 4
Dependent Claim
120 words
The device of claim 1 wherein said follower positioning means comprises: support means, first mounting means stationarily mounting said first follower means on said support means and second mounting means mounting said second follower means on said support means for movement relative to said support means and including urging means normally urging said second follower means into a first position in which said second follower means is spaced said given distance from said first follower means, said urging means being overcome when said second follower means contacts and moves relative to said second reference plane so that said second follower means is moved to a second position in which the distance between said first and second follower means is varied.
Claim 5
Dependent Claim
13 words
The device of claim 1 wherein said control means is a variable rheostat.
Claim 6
Dependent Claim
28 words
The device of claim 1 wherein at least one of said first and second follower means includes a roller which is rollably moveable in its respective reference plane.
Claim 7
Dependent Claim
197 words
In an installation in which an assembly is moveable by drive means along a predetermined path, a device for slowing the movement of said assembly when the assembly approaches a given point in said path, comprising in combinaTion therewith: first stationary plane means, second stationary plane means adjacent said point in said path and inclined relative to said first plane means, follower support means on said assembly carrying first and second follower means, first mounting means mounting said follower support means for movement relative to said assembly so that said first follower means are continuously positioned in the plane of said first stationary plane means when the distance between the plane and the assembly is varied, second mounting means mounting said second follower means so that said second follower means are moveable between a first position in which said first and second follower means are spaced a given distance from each other and a second position in which the distance between said follower means is varied in response to contact with said second plane means, and control means for variably controlling said drive means in response to the movement of said second followers means between said positions.
Claim 8
Dependent Claim
197 words
In an installation in which an assembly is moveable by drive means along a predetermined path, a device for slowing the movement of said assembly when the assembly approaches a given point in said path, comprising in combinaTion therewith: first stationary plane means, second stationary plane means adjacent said point in said path and inclined relative to said first plane means, follower support means on said assembly carrying first and second follower means, first mounting means mounting said follower support means for movement relative to said assembly so that said first follower means are continuously positioned in the plane of said first stationary plane means when the distance between the plane and the assembly is varied, second mounting means mounting said second follower means so that said second follower means are moveable between a first position in which said first and second follower means are spaced a given distance from each other and a second position in which the distance between said follower means is varied in response to contact with said second plane means, and control means for variably controlling said drive means in response to the movement of said second followers means between said positions.
Claim 9
Dependent Claim
26 words
The installation of claim 6 including stationary guidance means for guiding said assembly along said predetermined path, said guidance means defining said first stationary plane means.
Claim 10
Dependent Claim
16 words
The installation of claim 7 wherein said second plane means is attached to said guidance means.
Claim 11
Dependent Claim
38 words
The installation of claim 6 including an elongated stationary channel member, the edge of at least one flange of said channel member defining said first plane means and said second plane means being carried by said channel member.
Claim 12
Dependent Claim
47 words
The installation of claim 6 wherein said follower means include rollers for rollably contacting said first and second plane means and said control means comprises a variable rheostat the resistance of which is varied in response to the movement of said second follower means between said positions.
References Cited (Backward Citations)
US3261302A
Cited
US3206560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |