Patent US3875462A successfully refreshed from Google Patents.
US3875462A
Expired / Lapsed
US
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Food waste disposer
Assignee: General Electric Co
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Filing: 1973-02-01
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Granted: 1975-04-01
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Expires: 1993-02-01
Abstract
Abstract There is disclosed a food waste disposer having a combined overload switch mounting and ground plate. The plate is fastened directly to the bottom of the stator housing. The mounting plate allows recessing of the overload reset switch button, provides a direct heat conductive path from the motor bearing toward the overload switch, facilitates assembly of the disposer, provides a cap which prevents lubricant loss from the lower motor bearing, and provides an electrical ground connection to the lower motor bearing.
Inventors
- 👤 George E Kiefer
- 👤 Lauren W Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:39
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/20; H02K11/25
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
An electrically energized food waste disposer comprising an electrically non-conductive stator housing; a vertical rotor bearing carried by the housing and exposed on the lower housing end; a thermally and electrically conductive member affixed to the housing in thermal and electrical contact with the bearing, said conductive member including an imperforate section enclosing the bearing end; a lubricate source adjacent the lower bearing end; a switch carried by the member in heat exchanging relation thereto for de-energizing the disposer in response to a detrimental change in operating condition of said bearing; a cover affixed to the housing for enclosing the switch and member and including an electrical terminal; and means grounding the member to the terminal.
Claim 2
Dependent Claim
116 words
An electrically energized food waste disposer comprising an electrically non-conductive stator housing; a vertical rotor bearing carried by the housing and exposed on the lower housing end; a thermally and electrically conductive member affixed to the housing in thermal and electrical contact with the bearing, said conductive member including an imperforate section enclosing the bearing end; a lubricate source adjacent the lower bearing end; a switch carried by the member in heat exchanging relation thereto for de-energizing the disposer in response to a detrimental change in operating condition of said bearing; a cover affixed to the housing for enclosing the switch and member and including an electrical terminal; and means grounding the member to the terminal.
Claim 3
Dependent Claim
13 words
The disposer of claim 1 wherein the switch is thermally and electrically responsive.
Claim 4
Dependent Claim
23 words
The disposer of claim 1 wherein the imperforate member section provides a cup below the lubricant source and bearing for receiving lubricant leakage.
Claim 5
Dependent Claim
43 words
The disposer of claim 1 wherein the stator housing comprises a matrix of electrically non-conductive material having embedded therein an electrically and thermally conductive insert in engagement with the lower rotor bearing, the member being in thermal and electrical contact with the insert.
Claim 6
Dependent Claim
29 words
The disposer of claim 4 comprising threaded fasteners securing the member to the insert, the threaded fasteners providing a thermal and electrical contact between the member and the insert.
Claim 7
Dependent Claim
22 words
The disposer of claim 5 wherein the grounding means comprises a wire connected to one of the fasteners and to the terminal.
Claim 8
Dependent Claim
70 words
The disposer of claim 1 wherein the switch is normally closed and includes means placing and maintaining the switch in a switch open position in response to increasing bearing temperature and/or current and a reset button for manipulating the switch from the open position to the normally closed position, the reset button residing within the confines of the cover, the cover having an opening adjacent the button providing access thereto.
References Cited (Backward Citations)
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |