Patent US4118323A successfully refreshed from Google Patents.
US4118323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strainer
Assignee: Nifco Inc
•
Filing: 1977-10-26
•
Granted: 1978-10-03
•
Expires: 1997-10-26
Abstract
Abstract Disclosed is a strainer which is suitable for use in supplying gasoline from a gasoline tank by means of a suction pipe. A strainer according to this invention comprises a cylindrical body having a net applied to the periphery thereof and a cover which is adapted to closely cover the top opening of the cylindrical body. The cover has an annular projection around the through hole at the center. In use, the cover is fit onto the top opening of the cylindrical body and then the end of a suction pipe is inserted in the cylindrical body through the annular projection. The structures of the cylindrical body and the cover are amenable to production by injection molding, and are easy to assemble.
Inventors
- 👤 Masaaki Sugiyama
- 👤 Takuo Yuda
- 👤 Akira Mizusawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:33
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/88; B01D29/90; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/305; B01D2201/40; B01D2201/4084; B01D29/92
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
302 words
A plastic strainer in combination with a suction pipe having an annular projection spaced a predetermined distance from the free end of said pipe, said strainer including a strainer body member having a tubular top frame, imperforated bottom board, a plurality of axially extending circumferentially spaced support elements with each support element integrally attached at opposite ends to said top frame and said bottom board, a plurality of resilient arms extending axially between the free end of said top frame, said arms including shoulder means intermediate their length, a tubular filtration net integrally attached to and embedded in and extending between the opposed surfaces of said top frame and of said bottom board, said net extending throughout the axial extent of said support elements and embedded and integrally connected and supported therein along a line intermediate the radial extent of said elements, a centrally appertured cover member removably attached to said strainer body, said cover member including a plurality of circumferentially spaced complementary openings equal in number to said arms for telescopingly accepting said arms within shouldered portion of said arms engaging the outer surface of said cover when said cover is seated against said top frame, an open ended tubular connector element molded integrally with the cover top and communicating with said central apperature to provide a continuous bore through said connector element and said cover, said bore in said tubular connector element being tapered from its free end to an annular groove circumferentially disposed therein and adapted to accept said annular projection on said suction pipe in complementary relation when the suction pipe is telescoped through the tubular connector element end cover whereby said suction pipe free end is maintained in spaced relation to said bottom board being spaced a greater distance from said cover element the said predetermined distance.
Claim 2
Dependent Claim
302 words
A plastic strainer in combination with a suction pipe having an annular projection spaced a predetermined distance from the free end of said pipe, said strainer including a strainer body member having a tubular top frame, imperforated bottom board, a plurality of axially extending circumferentially spaced support elements with each support element integrally attached at opposite ends to said top frame and said bottom board, a plurality of resilient arms extending axially between the free end of said top frame, said arms including shoulder means intermediate their length, a tubular filtration net integrally attached to and embedded in and extending between the opposed surfaces of said top frame and of said bottom board, said net extending throughout the axial extent of said support elements and embedded and integrally connected and supported therein along a line intermediate the radial extent of said elements, a centrally appertured cover member removably attached to said strainer body, said cover member including a plurality of circumferentially spaced complementary openings equal in number to said arms for telescopingly accepting said arms within shouldered portion of said arms engaging the outer surface of said cover when said cover is seated against said top frame, an open ended tubular connector element molded integrally with the cover top and communicating with said central apperature to provide a continuous bore through said connector element and said cover, said bore in said tubular connector element being tapered from its free end to an annular groove circumferentially disposed therein and adapted to accept said annular projection on said suction pipe in complementary relation when the suction pipe is telescoped through the tubular connector element end cover whereby said suction pipe free end is maintained in spaced relation to said bottom board being spaced a greater distance from said cover element the said predetermined distance.
Claim 3
Dependent Claim
39 words
A strainer of the type claimed in claim 1 wherein the tubular top frame is circular, said arms being equal in number to and being axial extensions of said supporting elements and extending axially between said circular top frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |