US3846652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary lubricating and dust cap assembly
Assignee: SMITH A CORP US
•
Filing: 1974-01-15
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Granted: 1974-11-05
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Expires: 1994-01-15
Abstract
Abstract An oil and dust cap for mounting on the end of an electric motor which includes an oil tube, an oil tube cap, a dust cap with a sump and a hub, all of which are formed in one piece from a plastic material such as polypropylene. The assembly is secured to the end frame of the motor by bolts or screws, or by ultrasonic or heat staking and is utilized especially with sleeve bearing motors. An annular flange may be provided on the outside of the end cap to receive a resilient mount and clips to resiliently mount a motor on a U-shaped base.
Inventors
- 👤 R Lykes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:33
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; H; H02; H02K; H02K5/00; H02K5/04; H02K5/15; H02K5/16; H02K5/167; H02K5/1672
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
An oil and dust cap for assembly with a dynamoelectric machine having a stator defining a bore, a rotor secured to a shaft extending in said bore, and at least one bearing supporting the shaft in the bore, and a shell surrounding the stator and an end frame secured thereto and receiving said shaft and supporting the bearing and an oil receiving wick, said oil and dust cap characterized by a one-piece plastic construction having a hub assembled around the shaft at the end of the bore with a radially projecting wall extending therefrom and providing a dust cap over the outer end of the motor, an oil tube integrally formed with the dust cap and extending to adjacent the circumference of the end frame to receive lubricating oil and carry the oil for delivery to said wick, means to close the upper end of the oil tube, and means securing the dust cap to the end frame.
Claim 2
Dependent Claim
158 words
An oil and dust cap for assembly with a dynamoelectric machine having a stator defining a bore, a rotor secured to a shaft extending in said bore, and at least one bearing supporting the shaft in the bore, and a shell surrounding the stator and an end frame secured thereto and receiving said shaft and supporting the bearing and an oil receiving wick, said oil and dust cap characterized by a one-piece plastic construction having a hub assembled around the shaft at the end of the bore with a radially projecting wall extending therefrom and providing a dust cap over the outer end of the motor, an oil tube integrally formed with the dust cap and extending to adjacent the circumference of the end frame to receive lubricating oil and carry the oil for delivery to said wick, means to close the upper end of the oil tube, and means securing the dust cap to the end frame.
Claim 3
Dependent Claim
39 words
The construction of claim 1, and a curved flange integrally provided at the inner upper end of the dust cap to provide a sump to receive oil from the oil tube and gradually dispense the oil to said wick.
Claim 4
Dependent Claim
28 words
The construction of claim 1, and the means closing the upper end of the oil tube comprising a plug connected to the oil tube by a plastic cord.
Claim 5
Dependent Claim
29 words
The construction of claim 1, and the means closing the upper end of the oil tube comprising a plug integrally joined to the oil tube by a molded hinge.
Claim 6
Dependent Claim
26 words
The construction of claim 1, and the means securing the oil and dust cap to the end frame consisting of a pluralIty of bolts or screws.
Claim 7
Dependent Claim
47 words
The construction of claim 1, and the means securing the oil and dust cap to the end frame consisting of a plurality of bosses integrally formed on the inside of the outer portion of the cap and extending through holes in the end frame and staked thereto
Claim 8
Dependent Claim
76 words
The construction of claim 1, and the oil and dust cap having an integrally formed outwardly extending annular flange integrally therewith around the hub of the dust cap, abutment means on the inside of the flange to reinforce the flange, an annular resilient mount assembled over the annular flange, a base member of a saddle-like shape at the upper portion engaging the annular resilient mount, and clip means securing the base member to the resilient mount.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |