US3749248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fill passage oil strainer
Assignee: FMC Corp
•
Filing: 1971-06-02
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Granted: 1973-07-31
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Expires: 1991-06-02
Abstract
Abstract An oil strainer for insertion into the oil fill passage of a motor housing and projecting beyond the passage to provide a straining surface substantially greater than the diametrical area of the oil fill passage. The strainer incorporates an end cap having a stem receivable in a cavity of the motor housing to maintain the strainer in axial alingment with the oil fill passage and to prevent the strainer from being inadvertently pushed out of the fill passage. A handle is provided for easy removal.
Inventors
- 👤 B Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:55
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M1/00; F01M1/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
168 words
In an air motor having a housing with an oil fill passage therein, the combination therewith of: a. closure means for said oil passage, b. a removable strainer insertable into said oil passage, 1. said strainer having one open end for receiving fluid to be strained, 2. said open end projecting at least partially into said oil fill passage in a close fitting relationship therewith, 3. rigid collar means on said open ended strainer portion, 4. a handle on said strainer positioned to be easily grasped through said oil fill passage, 5. an end cap enclosing the other end of said strainer, 6. a stem on the end cap in axial alignment with said strainer, c. an abutment surface in the housing for engaging said strainer end cap to limit the axial movement of said strainer in one direction to maintain said collar means in the oil fill passage, and d. a cavity in said housing in axial alignment with the oil fill passage for receiving the stem.
Claim 2
Dependent Claim
168 words
In an air motor having a housing with an oil fill passage therein, the combination therewith of: a. closure means for said oil passage, b. a removable strainer insertable into said oil passage, 1. said strainer having one open end for receiving fluid to be strained, 2. said open end projecting at least partially into said oil fill passage in a close fitting relationship therewith, 3. rigid collar means on said open ended strainer portion, 4. a handle on said strainer positioned to be easily grasped through said oil fill passage, 5. an end cap enclosing the other end of said strainer, 6. a stem on the end cap in axial alignment with said strainer, c. an abutment surface in the housing for engaging said strainer end cap to limit the axial movement of said strainer in one direction to maintain said collar means in the oil fill passage, and d. a cavity in said housing in axial alignment with the oil fill passage for receiving the stem.
Claim 3
Dependent Claim
18 words
said open end projecting at least partially into said oil fill passage in a close fitting relationship therewith,
Claim 4
Dependent Claim
18 words
said open end projecting at least partially into said oil fill passage in a close fitting relationship therewith,
Claim 5
Dependent Claim
45 words
An apparatus according to claim 1 wherein said closure means includes means defining a vent to the atmosphere, and additionally comprising a screen in said closure means disposed between said vent and said oil passage to screen impurities from the air entering said oil passage.
Claim 6
Dependent Claim
9 words
rigid collar means on said open ended strainer portion,
Claim 7
Dependent Claim
9 words
rigid collar means on said open ended strainer portion,
Claim 8
Dependent Claim
15 words
a handle on said strainer positioned to be easily grasped through said oil fill passage,
Claim 9
Dependent Claim
15 words
a handle on said strainer positioned to be easily grasped through said oil fill passage,
Claim 10
Dependent Claim
10 words
an end cap enclosing the other end of said strainer,
Claim 11
Dependent Claim
10 words
an end cap enclosing the other end of said strainer,
Claim 12
Dependent Claim
65 words
a stem on the end cap in axial alignment with said strainer, c. an abutment surface in the housing for engaging said strainer end cap to limit the axial movement of said strainer in one direction to maintain said collar means in the oil fill passage, and d. a cavity in said housing in axial alignment with the oil fill passage for receiving the stem.
Claim 13
Dependent Claim
65 words
a stem on the end cap in axial alignment with said strainer, c. an abutment surface in the housing for engaging said strainer end cap to limit the axial movement of said strainer in one direction to maintain said collar means in the oil fill passage, and d. a cavity in said housing in axial alignment with the oil fill passage for receiving the stem.
References Cited (Backward Citations)
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Cited
US1746121A
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US1846072A
Cited
US2010445A
Cited
US2492831A
Cited
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Cited
US3306171A
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |