Patent US4722670A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4722670A Expired / Lapsed US ⏱️ 0.0 years remaining

Aquarium pump and cleaning system

Assignee: Individual
•
Filing: 1983-06-20
•
Granted: 1988-02-02
•
Expires: 2003-06-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The fish tank cleaning system of this invention comprises a water pump using power of water flowing at a sink to pull by venturi principle water through a hose from an aquarium to empty the aquarium or to cooperate with tools used at the aquarium for cleaning the stones on the bottom thereof and for cleaning the walls thereof, the stone-cleaning tool comprising a housing from which water is pulled, the lower end of the housing being adapted to engage rocks on the aquarium bottom, the housing having rock-stirring means mounted thereon, the wall-cleaning being done with a squeegee having a special water and debris suction opening for delivering water to a hose.

Inventors

  • 👤 Michael R. Zweifel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 06:10
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; A; A01; A01K; A01K63/00; A01K63/04; A01K63/047

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 327 words
An aquarium pump and cleaning system comprising a pump having a housing having an outlet port delivering water to a water drain, said pump housing having an inlet opening, said pump pulling water through its inlet opening, a hose having one end connected to said inlet opening, an aquarium, a tubular means having one end connected to the other end of said hose and having its other end in said aquarium, said pump housing having an inlet port, said pump being a venturi pump attachable at said inlet port to a source of water pressure and utilizing said water pressure to draw water through said inlet opening, said pump having an outer housing, an inner chamber wall inside said housing and spaced from said outer housing, said inner chamber wall having an inner surface which tapers gradually to provide a larger upper chamber portion tapering to a smaller lower chamber portion which latter has a terminal section, said lowermost end of said terminal section being open, a flow divider fixed to said housing and having a smaller upper end disposed adjacent the center of said open lower end of said terminal section, said flow divider having an outer surface tapering from a said smaller upper end to a larger lower end, said housing having an inner wall spaced from the outer side of said chamber wall and having a constricted portion adjacent the open lower end of said chamber wall and larger portions above and below said constricted portion, said flow divider being spaced from the inner wall of said housing, and having in combination a sink faucet, means attached on said sink faucet and delivering water from said faucet to said pump, and having said terminal section of said inner chamber wall being outwardly flared so as to be larger at its lowermost end than at its upper end, said upper and lower chamber portions being substantially free of interference from any flow divider support means.
Claim 2
Dependent Claim 327 words
An aquarium pump and cleaning system comprising a pump having a housing having an outlet port delivering water to a water drain, said pump housing having an inlet opening, said pump pulling water through its inlet opening, a hose having one end connected to said inlet opening, an aquarium, a tubular means having one end connected to the other end of said hose and having its other end in said aquarium, said pump housing having an inlet port, said pump being a venturi pump attachable at said inlet port to a source of water pressure and utilizing said water pressure to draw water through said inlet opening, said pump having an outer housing, an inner chamber wall inside said housing and spaced from said outer housing, said inner chamber wall having an inner surface which tapers gradually to provide a larger upper chamber portion tapering to a smaller lower chamber portion which latter has a terminal section, said lowermost end of said terminal section being open, a flow divider fixed to said housing and having a smaller upper end disposed adjacent the center of said open lower end of said terminal section, said flow divider having an outer surface tapering from a said smaller upper end to a larger lower end, said housing having an inner wall spaced from the outer side of said chamber wall and having a constricted portion adjacent the open lower end of said chamber wall and larger portions above and below said constricted portion, said flow divider being spaced from the inner wall of said housing, and having in combination a sink faucet, means attached on said sink faucet and delivering water from said faucet to said pump, and having said terminal section of said inner chamber wall being outwardly flared so as to be larger at its lowermost end than at its upper end, said upper and lower chamber portions being substantially free of interference from any flow divider support means.
Claim 3
Dependent Claim 305 words
An aquarium pump and cleaning system comprising a pump having a housing having an outlet port delivering water to a water drain, said pump housing having an inlet opening, said pump pulling water through its inlet opening, a hose having one end connected to said inlet opening, an aquarium, a tubular means having one end connected to the other end of said hose and having its other end in said aquarium, said pump housing having an inlet port, said pump being a venturi pump attachable at said inlet port to a source of water pressure and utilizing said water pressure to draw water through said inlet opening, said pump having an outer housing, an inner chamber wall inside said housing and spaced from said outer housing, said inner chamber wall having an inner surface which tapers gradually to provide a larger upper chamber portion tapering to a smaller lower chamber portion which latter has a terminal section, said lowermost end of said terminal section being open, a flow divider fixed to said housing and having a smaller upper end disposed adjacent the center of said open lower end of said terminal section, said flow divider having an outer surface tapering from a said smaller upper end to a larger lower end, said housing having an inner wall spaced from the outer side of said chamber wall and having a constricted portion adjacent the open lower end of said chamber wall and larger portions above and below said constricted portion, said flow divider being spaced from the inner wall of said housing, said terminal section of said inner chamber wall being outwardly flared so as to be larger at its lowermost end than at its upper end, said (inner chamber) upper and lower chamber portions being substantially free of interference from any flow divider support means.
Claim 4
Dependent Claim 305 words
An aquarium pump and cleaning system comprising a pump having a housing having an outlet port delivering water to a water drain, said pump housing having an inlet opening, said pump pulling water through its inlet opening, a hose having one end connected to said inlet opening, an aquarium, a tubular means having one end connected to the other end of said hose and having its other end in said aquarium, said pump housing having an inlet port, said pump being a venturi pump attachable at said inlet port to a source of water pressure and utilizing said water pressure to draw water through said inlet opening, said pump having an outer housing, an inner chamber wall inside said housing and spaced from said outer housing, said inner chamber wall having an inner surface which tapers gradually to provide a larger upper chamber portion tapering to a smaller lower chamber portion which latter has a terminal section, said lowermost end of said terminal section being open, a flow divider fixed to said housing and having a smaller upper end disposed adjacent the center of said open lower end of said terminal section, said flow divider having an outer surface tapering from a said smaller upper end to a larger lower end, said housing having an inner wall spaced from the outer side of said chamber wall and having a constricted portion adjacent the open lower end of said chamber wall and larger portions above and below said constricted portion, said flow divider being spaced from the inner wall of said housing, said terminal section of said inner chamber wall being outwardly flared so as to be larger at its lowermost end than at its upper end, said (inner chamber) upper and lower chamber portions being substantially free of interference from any flow divider support means.

References Cited (Backward Citations)

US134710A Cited
US1137767A Cited
US881548A Cited
US905818A Cited
US1067653A Cited
US1950172A Cited
US1982128A Cited
US2112290A Cited
US3225930A Cited
US3304564A Cited
US3785572A Cited
US3838002A Cited
US3826371A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-02-01 1991-08-03 1992-02-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-02-01 1995-08-03 1996-02-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-02-01 1999-08-03 2000-02-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag