Patent US1156770A successfully refreshed from Google Patents.
Patent US4445606A successfully refreshed from Google Patents.
US4445606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armature assembly for electromagnetic coupling
Assignee: Warner Electric Technology LLC
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Filing: 1981-12-14
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Granted: 1984-05-01
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Expires: 2001-12-14
Abstract
Abstract An armature of an electromagnetic clutch is connected to a mounting plate which is coupled to the toothed driven hub of the clutch through the intermediary of an elastomeric spider. If the spider is melted by heat, the mounting plate wedges against the tips of the teeth of the hub and is prevented from flying axially off of the forward end of the hub.
Inventors
- 👤 Kalvin G. Van Laningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:45
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16P; F16P5/00; F16B; F16B2200/00; F16B2200/63; F16D2027/007; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/45; Y10T403/455; Y10T403/456; Y10T403/70; Y10T403/7026; Y10T403/7035
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
An armature assembly for an electromagnetic coupling, said assembly comprising a forwardly disposed mounting plate and a rearwardly disposed armature, means connecting said armature and said plate for rotation in unison while permitting said armature to move toward and away from said plate, a hole extending axially through said plate, the periphery of said hole being defined by a first set of circumferentially spaced teeth and by a first set of circumferentially spaced valleys which alternate with the teeth, a hub having a second set of circumferentially spaced teeth and having a second set of circumferentially spaced valleys which alternate with the second teeth, said hub being telescoped into said hole with the teeth of each set being disposed within the valleys of the other set, elastomeric material disposed between said first and second teeth and coupling said plate and said hub for rotation in unison, the tips of the teeth of one of said sets and the bottoms of the valleys of the other of said sets being shaped so as to be engageable with one another with a wedging action upon forward shifting of said plate relative to said hub thereby to captivate said plate against forward separation from said hub.
Claim 2
Dependent Claim
203 words
An armature assembly for an electromagnetic coupling, said assembly comprising a forwardly disposed mounting plate and a rearwardly disposed armature, means connecting said armature and said plate for rotation in unison while permitting said armature to move toward and away from said plate, a hole extending axially through said plate, the periphery of said hole being defined by a first set of circumferentially spaced teeth and by a first set of circumferentially spaced valleys which alternate with the teeth, a hub having a second set of circumferentially spaced teeth and having a second set of circumferentially spaced valleys which alternate with the second teeth, said hub being telescoped into said hole with the teeth of each set being disposed within the valleys of the other set, elastomeric material disposed between said first and second teeth and coupling said plate and said hub for rotation in unison, the tips of the teeth of one of said sets and the bottoms of the valleys of the other of said sets being shaped so as to be engageable with one another with a wedging action upon forward shifting of said plate relative to said hub thereby to captivate said plate against forward separation from said hub.
Claim 3
Dependent Claim
30 words
An armature assembly as defined in claim 1 in which the tips of the teeth of said hub are shaped so as to flare outwardly as said tips progress forwardly.
Claim 4
Dependent Claim
30 words
An armature assembly as defined in claim 1 in which the bottoms of the valleys of said plate are shaped so as to flare outwardly as said bottoms progress forwardly.
Claim 5
Dependent Claim
30 words
An armature assembly as defined in claim 2 in which the bottoms of the valleys of said plate are shaped so as to flare outwardly as said bottoms progress forwardly.
Claim 6
Dependent Claim
20 words
An armature assembly as defined in claim 4 in which said flared tips extend substantially parallel to said flared bottoms.
Claim 7
Dependent Claim
85 words
An armature assembly as defined in either of claims 1 or 5 in which the teeth of each set are spaced circumferentially and radially from the valleys of the other set, said elastomeric material comprising a spider which fills the circumferential and radial spaces between the teeth and the valleys, said spider having first integral flange means which engage the forward sides of said plate and said hub and having second integral flange means which engage the rear sides of said plate and said hub.
Claim 8
Dependent Claim
199 words
An armature assembly for an electromagnetic coupling, said assembly comprising a forwardly disposed mounting plate and a rearwardly disposed armature, means connecting said armature and said plate for rotation in unison while permitting said armature to move toward and away from said plate, a hole extending axially through said plate, the periphery of said hole being defined by a first set of circumferentially spaced teeth and by a first set of circumferentially spaced valleys which alternate with the teeth, a hub having a second set of circumferentially spaced teeth and having a second set of circumferentially spaced valleys which alternate with the second teeth, said hub being telescoped into said hole with the teeth of each set being disposed within the valleys of the other set, elastomeric material disposed between said first and second teeth and coupling said plate and said hub for rotation in unison, the tips of the teeth of said hub and the bottoms of the valleys of said plate flaring outwardly upon progressing forwardly and being engageable with one another. with a wedging action upon forward shifting of said plate relative to said hub thereby to captivate said plate against forward separation from said hub.
Claim 9
Dependent Claim
199 words
An armature assembly for an electromagnetic coupling, said assembly comprising a forwardly disposed mounting plate and a rearwardly disposed armature, means connecting said armature and said plate for rotation in unison while permitting said armature to move toward and away from said plate, a hole extending axially through said plate, the periphery of said hole being defined by a first set of circumferentially spaced teeth and by a first set of circumferentially spaced valleys which alternate with the teeth, a hub having a second set of circumferentially spaced teeth and having a second set of circumferentially spaced valleys which alternate with the second teeth, said hub being telescoped into said hole with the teeth of each set being disposed within the valleys of the other set, elastomeric material disposed between said first and second teeth and coupling said plate and said hub for rotation in unison, the tips of the teeth of said hub and the bottoms of the valleys of said plate flaring outwardly upon progressing forwardly and being engageable with one another. with a wedging action upon forward shifting of said plate relative to said hub thereby to captivate said plate against forward separation from said hub.
Claim 10
Dependent Claim
20 words
An armature assembly as defined in claim 7 in which said flared tips extend substantially parallel to said flared bottoms.
Claim 11
Dependent Claim
85 words
An armature assembly as defined in either of claims 7 or 8 in which the teeth of each set are spaced circumferentially and radially from the valleys of the other set, said elastomeric material comprising a spider which fills the circumferential and radial spaces between the teeth and the valleys, said spider having first integral flange means which engage the forward sides of said plate and said hub and having second integral flange means which engage the rear sides of said plate and said hub.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |