US3824419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction motor inspection cover
Assignee: General Electric Co
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Filing: 1973-04-04
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Granted: 1974-07-16
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Expires: 1993-04-04
Abstract
Abstract An arcuate cover for a motor housing opening wherein an adaptor plate is attached to the housing and an articulated cover is hingedly secured thereto to open downwardly and close upwardly with provision for securing the cover in a closed position. The cover is articulated proximate its midpoint and a torsion spring is provided to bias the two concave portions together when in the open position so as to limit its depending length. A second oppositely disposed articulated section may be provided which opens upwardly and is securable to the lower section when in the closed position.
Inventors
- 👤 W Skrzypczyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:39
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
227 words
An improved cover for a motor of the type having a commutator, a curved motor housing enclosing the commutator, an opening in the housing to provide access to the commutator, the opening being substantially rectangular in form and having an upper and lower edge with the lower edge proximate the bottom of the housing, and apparatus for mounting a cover over the opening, wherein the improvement comprises: a. a first cover portion mounted by a top end on a first stationary hinge adjacent the opening lower edge and pivotable to open and closed positions respectively, said first cover portion being arcuate in form and having an inner surface which conforms to the periphery of the housing, and having a lower end; b. a second cover portion pivotally mounted at a hinge-end to said first cover portion lower end, said second cover portion being arcuate in form and having an inner surface which conforms to the periphery of the housing and having a free end; c. means for biasing said inner surface of said second cover portion towards said inner surface of said first cover portion when the latter is pivoted toward an open position; d. means for securing in a closed position said second cover portion to said housing to cover at least a portion of said opening with each of said first and second cover portions.
Claim 2
Dependent Claim
227 words
An improved cover for a motor of the type having a commutator, a curved motor housing enclosing the commutator, an opening in the housing to provide access to the commutator, the opening being substantially rectangular in form and having an upper and lower edge with the lower edge proximate the bottom of the housing, and apparatus for mounting a cover over the opening, wherein the improvement comprises: a. a first cover portion mounted by a top end on a first stationary hinge adjacent the opening lower edge and pivotable to open and closed positions respectively, said first cover portion being arcuate in form and having an inner surface which conforms to the periphery of the housing, and having a lower end; b. a second cover portion pivotally mounted at a hinge-end to said first cover portion lower end, said second cover portion being arcuate in form and having an inner surface which conforms to the periphery of the housing and having a free end; c. means for biasing said inner surface of said second cover portion towards said inner surface of said first cover portion when the latter is pivoted toward an open position; d. means for securing in a closed position said second cover portion to said housing to cover at least a portion of said opening with each of said first and second cover portions.
Claim 3
Dependent Claim
58 words
A cover as set forth in claim 1 wherein said apparatus for mounting includes an adaptor plate interposed between the motor housing and the cover, said adaptor plate being secured to and in conformity with the motor frame periphery proximate the opening and said first cover portion is hingedly secured to said adaptor plate at one end thereof.
Claim 4
Dependent Claim
63 words
A cover as set forth in claim 2 wherein said securing means comprises at least one locking arm secured to said second cover portion and extending outwardly toward said adaptor plate, and a locking tab extending from said adaptor plate to engage said locking arm and hold the inner surfaces of said first and second cover portion in contiguity with said adaptor plate.
Claim 5
Dependent Claim
86 words
A cover as set forth in claim 1 and including: a. a lift cover portion mounted on a second stationary hinge adjacent the opening upper edge said lift cover portion conforming to the housing periphery and being pivotable upwardly to an open position, and downwardly to a closed position wherein the end opposite its hinged end is contiguous with said second cover portion free-end when in a closed position; and b. means for securing said lift cover portion to hold it in the closed downward position.
Claim 6
Dependent Claim
67 words
A cover as set forth in claim 4 wherein said means for securing said second cover portion and said means for securing said lift cover portion comprises: a. a fastening device having a first element secured to said second cover portion and a second element secured to said lift cover portion; and b. means for securing said first and second elements together when in a closed position.
Claim 7
Dependent Claim
46 words
A cover as set forth in claim 1 wherein said biasing means comprises a torsion spring disposed at the pivotal junction of said first cover portion lower-end and said second cover portion hinge-end, said torsion spring reacting on each of said first and second cover portions.
Claim 8
Dependent Claim
20 words
A cover as set forth in claim 1 wherein said first and second cover portions are substantially equal in size.
Claim 9
Dependent Claim
29 words
A cover as set forth in claim 1 and including a torsion spring disposed at said first stationary hinge for biasing said first cover portion toward a closed position.
Claim 10
Dependent Claim
28 words
A cover as set forth in claim 1 and including a plurality of apertures formed in said first and second cover portions to facilitate ventilation of the commutator.
Claim 11
Dependent Claim
25 words
A cover as set forth in claim 4 wherein said lift cover portion is articulated and comprises upper and lower elements of substantially equal size.
Claim 12
Dependent Claim
35 words
A cover as set forth in claim 1 wherein said biasing means is located near said second cover portion hinge end, and further wherein said biasing means interacts between said first and second cover portions.
References Cited (Backward Citations)
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Cited
US2385364A
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US2774506A
Cited
US3506860A
Cited
US3666978A
Cited
US3662198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |