US4523175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual shaft rotary electric device
Assignee: Alps Alpine Co Ltd
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Filing: 1984-02-13
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Granted: 1985-06-11
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Expires: 2004-02-13
Abstract
Abstract A dual shaft rotary electric device comprises inner and outer concentric shafts, slider supports attached to the inner and outer shafts respectively, sliders attached to the slider supports respectively, and insulating substrates stacked in the longitudinal direction of the dual shaft arrangement and respectively correspondingly to said sliders. An insulating spacer is inserted between the insulating substrates, and is held in place by opposite arms of a front side plate.
Inventors
- 👤 Michio Sakurai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36; H01H; H01H19/00; H01H19/02; H01H19/10; H01H19/14; H01H2019/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
A dual shaft rotary electric device comprising a dual shaft arrangement constituted by inner and outer concentric shafts, slider supports attached to said inner and outer shafts respectively, sliders attached to said slider supports respectively and insulating substrates stacked in the longitudinal direction of said dual shaft arrangement and respectively correspondingly to said sliders, in which an insulating spacer is inserted between said insulating substrates and a front plate having side arms extending generally parallel to said dual shaft arrangement and engaging said spacer to hold it in place.
Claim 2
Dependent Claim
89 words
A dual shaft rotary electric device comprising a dual shaft arrangement constituted by inner and outer concentric shafts, slider supports attached to said inner and outer shafts respectively, sliders attached to said slider supports respectively and insulating substrates stacked in the longitudinal direction of said dual shaft arrangement and respectively correspondingly to said sliders, in which an insulating spacer is inserted between said insulating substrates and a front plate having side arms extending generally parallel to said dual shaft arrangement and engaging said spacer to hold it in place.
Claim 3
Dependent Claim
33 words
A dual shaft rotary electric device according to claim 1, in which said insulating spacer is formed with a thin portion opposed to a terminal riveting portion of each of said insulator substrates.
Claim 4
Dependent Claim
38 words
A dual shaft rotary electric device according to claim 1, in which said front side plate is formed at its opposite arms with small holes respectively and protrusions of said insulator spacer are fitted into said small holes.
Claim 5
Dependent Claim
84 words
A dual shaft rotary electric device including inner and outer rotary shafts arranged concentrically and connected to respective stages of said electric device, said stages each including a respective slider connected to a respective shaft and adapted to slide along a respective substrate upon rotation of the respective shaft, an insulating spacer held between said stages, and means including a front plate having two arms extending parallel to said shafts and engaging said spacer for holding it in position during assembly of said device.
Claim 6
Dependent Claim
84 words
A dual shaft rotary electric device including inner and outer rotary shafts arranged concentrically and connected to respective stages of said electric device, said stages each including a respective slider connected to a respective shaft and adapted to slide along a respective substrate upon rotation of the respective shaft, an insulating spacer held between said stages, and means including a front plate having two arms extending parallel to said shafts and engaging said spacer for holding it in position during assembly of said device.
Claim 7
Dependent Claim
21 words
A device according to claim 4, said substrates each having terminals fastened thereto, said spacer having recessed portions adjacent said terminals.
Claim 8
Dependent Claim
19 words
A device according to claim 4, said spacer having protrusions adapted to fit within complimentary holes in said arms.
References Cited (Backward Citations)
CA522063A
Cited
US2493184A
Cited
US2927168A
Cited
GB1347473A
Cited
US3736390A
Cited
US3918022A
Cited
US3988711A
Cited
US4353053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |