Patent US3669231A successfully refreshed from Google Patents.
US3669231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronized electromagnetic clutch
Assignee: Kearfott Guidance and Navigation Corp
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Filing: 1970-12-03
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Granted: 1972-06-13
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Expires: 1990-12-03
Abstract
Abstract A synchronized electromagnetic clutch is provided having input and output members which are provided with circumferentially disposed teeth which align with each other by means of a flow of magnetic flux so that axially disposed teeth on the face portions of the respective members will be in position to fully engage when the members are attracted to each other.
Inventors
- 👤 Arnold Schindel
- 👤 Vincent E Coyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:03
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/118; F16D23/00; F16D23/02; F16D2027/001; F16D2027/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
255 words
A clutch for connecting a driving member to a driven member, said clutch comprising a first member adapted for connection to said driving member, a second member adapted for connection to said driven member, means responsive to an input and to a predetermined alignment between said first and second members for providing an interlocking engagement between said first and second members, and means responsive to said input for effecting said predetermined alignment between said members, wherein sAid driving member and said driven member are each in the form of shafts, and wherein said first and second members are each in the form of a first and second cylindrical member respectively, the opposing faces of said cylindrical members normally being disposed in a spaced relationship and adapted to move towards each other in an axial direction in response to said input, and wherein said cylindrical members are of a magnetic material, and further comprising means for creating a magnetic flux flow through said cylindrical members to create a magnetic attraction between said members and cause said movement, said means for creating said magnetic flux flow forming said input, and wherein said means for effecting said predetermined alignment comprises respective cooperating portions being disposed on the respective cylindrical members, the cooperating portion on one of said cylindrical members extending in a closely spaced relation to the cooperating portion on the other cylindrical member and adapted to align relative thereto in response to said magnetic flux flow to create a minimum reluctance path to said magnetic flux flow.
Claim 2
Dependent Claim
255 words
A clutch for connecting a driving member to a driven member, said clutch comprising a first member adapted for connection to said driving member, a second member adapted for connection to said driven member, means responsive to an input and to a predetermined alignment between said first and second members for providing an interlocking engagement between said first and second members, and means responsive to said input for effecting said predetermined alignment between said members, wherein sAid driving member and said driven member are each in the form of shafts, and wherein said first and second members are each in the form of a first and second cylindrical member respectively, the opposing faces of said cylindrical members normally being disposed in a spaced relationship and adapted to move towards each other in an axial direction in response to said input, and wherein said cylindrical members are of a magnetic material, and further comprising means for creating a magnetic flux flow through said cylindrical members to create a magnetic attraction between said members and cause said movement, said means for creating said magnetic flux flow forming said input, and wherein said means for effecting said predetermined alignment comprises respective cooperating portions being disposed on the respective cylindrical members, the cooperating portion on one of said cylindrical members extending in a closely spaced relation to the cooperating portion on the other cylindrical member and adapted to align relative thereto in response to said magnetic flux flow to create a minimum reluctance path to said magnetic flux flow.
Claim 3
Dependent Claim
260 words
A clutch for connecting a driving member to a driven member, said clutch comprising a first member adapted for connection to said driving member, a second member adapted for connection to said driven member, means responsive to an input and to a predetermined alignment between said first and second members for providing an interlocking engagement between said first and second members, and means responsive to said input for effecting said predetermined alignment between said members, wherein said driving member and said driven member are each in the form of shafts, and wherein said first and second members are each in the form of a first and second cylindrical member respectively, the opposing faces of said cylindrical members normally being disposed in a spaced relationship and adapted to move towards each other in an axial direction in response to said input, and wherein said cylindrical members are of a magnetic material, and further comprising means for creating a magnetic flux flow through said cylindrical members to create a magnetic attraction between said members and cause said movement, said means for creating said magnetic flux flow forming said input, and wherein said means for effecting said predetermined alignment comprises a plurality of radially extending teeth being disposed on the respective cylindrical members, the radially extending teeth on one of said cylindrical members extending in a closely spaced relation to the radially extending teeth on the other cylindrical member and adapted to align relative thereto in response to said magnetic flux flow to create a minimum reluctance path to said magnetic flux flow.
Claim 4
Dependent Claim
260 words
A clutch for connecting a driving member to a driven member, said clutch comprising a first member adapted for connection to said driving member, a second member adapted for connection to said driven member, means responsive to an input and to a predetermined alignment between said first and second members for providing an interlocking engagement between said first and second members, and means responsive to said input for effecting said predetermined alignment between said members, wherein said driving member and said driven member are each in the form of shafts, and wherein said first and second members are each in the form of a first and second cylindrical member respectively, the opposing faces of said cylindrical members normally being disposed in a spaced relationship and adapted to move towards each other in an axial direction in response to said input, and wherein said cylindrical members are of a magnetic material, and further comprising means for creating a magnetic flux flow through said cylindrical members to create a magnetic attraction between said members and cause said movement, said means for creating said magnetic flux flow forming said input, and wherein said means for effecting said predetermined alignment comprises a plurality of radially extending teeth being disposed on the respective cylindrical members, the radially extending teeth on one of said cylindrical members extending in a closely spaced relation to the radially extending teeth on the other cylindrical member and adapted to align relative thereto in response to said magnetic flux flow to create a minimum reluctance path to said magnetic flux flow.
Claim 5
Dependent Claim
22 words
The device of claim 2 wherein the axially extending teeth on one of said cylindrical members are formed of a non-magnetic material.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |