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US4926508A Expired / Lapsed US ⏱️ 0.0 years remaining

Portable toilet with battery operated flush assembly

Assignee: Thetford LLC
•
Filing: 1989-02-10
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Granted: 1990-05-22
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Expires: 2009-02-10
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Abstract

Abstract A portable toilet having a battery operated flushing assembly that is powered by batteries carried in the toilet. The batteries provide for a "pulsed" flushing action of the flush water and this is achieved by the use of an axial flow pump which is operable to lift small amounts of water small distances to the bowl in a repeatable fashion. This facilitates flushing of the toilet, makes it easier for the user to flush the toilet, and provides for efficient and complete flushing. A selectively operable closure plate prevents leakage of water from the toilet bowl during transport of the toilet.

Inventors

  • 👤 Charles L. Sargent
  • 👤 John M. Antos
  • 👤 Scott I. Biba

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:19
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/012; E03D5/01; E03D5/016

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 220 words
In a portable toilet which includes a seat section having a bowl with a bottom discharge opening and a chamber containing flush water for rinsing said bowl and flushing the contents thereof through said discharge opening, pump means operable to move water from said flush water chamber into said bowl, an enclosure for said pump means having a lower flush water inlet communicating with said flush water chamber, electric motor means drivingly connected to said pump means, battery means mounted on said seat section, means for selectively electrically connecting said battery means to said motor means, said electrical connecting means including a circuit having an "on/off" switch and further including a switch actuating member movably mounted on said seat section for movement between two positions corresponding to "on" and "off" positions of said switch, closure means for said flush water inlet movable between open and closed positions, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and then into said bowl and said closure means in the open position enabling flow of flush water from said chamber into said enclosure, and means operable in response to movement of said actuating member to said position corresponding to the "on" position of said switch for moving said closure means to said open position.
Claim 2
Dependent Claim 220 words
In a portable toilet which includes a seat section having a bowl with a bottom discharge opening and a chamber containing flush water for rinsing said bowl and flushing the contents thereof through said discharge opening, pump means operable to move water from said flush water chamber into said bowl, an enclosure for said pump means having a lower flush water inlet communicating with said flush water chamber, electric motor means drivingly connected to said pump means, battery means mounted on said seat section, means for selectively electrically connecting said battery means to said motor means, said electrical connecting means including a circuit having an "on/off" switch and further including a switch actuating member movably mounted on said seat section for movement between two positions corresponding to "on" and "off" positions of said switch, closure means for said flush water inlet movable between open and closed positions, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and then into said bowl and said closure means in the open position enabling flow of flush water from said chamber into said enclosure, and means operable in response to movement of said actuating member to said position corresponding to the "on" position of said switch for moving said closure means to said open position.
Claim 3
Dependent Claim 34 words
The portable toilet according to claim 1 further including co-acting means on said seat section and said actuation member for releasably locking said actuation member in said position corresponding to said switch "off" position.
Claim 4
Dependent Claim 48 words
The portable toilet according to claim 2 wherein said means on said actuating member is a rotatable thumb wheel movable between a position in which said thumb wheel blocks movement of said actuating member and a position in which said thumb wheel does not interfere with said movement.
Claim 5
Dependent Claim 32 words
The portable toilet according to claim 3 further including stop means on said seat section engageable with said thumb wheel to block movement thereof in said one position of said thumb wheel.
Claim 6
Dependent Claim 80 words
The portable toilet according to claim 1 wherein said circuit further includes means operable to repeatedly open the circuit to said electric motor in the position of said actuating member corresponding to said "on" position of said switch to thereby provide for an intermittent flow of flush water to said bowl thus providing for a flow of flush water in said bowl at both low and high velocities to thereby achieve a uniform wetting of the bowl with flush water.
Claim 7
Dependent Claim 62 words
The portable toilet according to claim 5 wherein said switch actuating member is located above said pump means, said battery means is located directly below said actuating member, said pump means is located below and in substantial vertical alignment with said actuating member and said battery means, and said electric motor means is disposed between said battery means and said pump means.
Claim 8
Dependent Claim 36 words
The portable toilet according to claim 6 further including a housing for said battery means located below said actuating member, and a circuit board member containing said circuit disposed in said housing adjacent said battery means.
Claim 9
Dependent Claim 47 words
The portable toilet according to claim 1 wherein said switch actuating member is located above said closure means and said means operable in response to movement of said actuating member is a downwardly extending rod operable to transmit a downwardly directed opening force to said closure means.
Claim 10
Dependent Claim 21 words
The portable toilet according to claim 8 wherein said closure means is a hingedly mounted closure plate engaged with said rod.
Claim 11
Dependent Claim 258 words
In a portable toilet which includes a seat section having a bowl with a bottom discharge opening and a chamber containing flush water for rinsing said bowl and flushing the contents thereof through said discharge opening, pump means operable to move water from said flush water chamber into said bowl, an enclosure for said pump means having a lower flush water inlet communicating with said flush water chamber, closure means for said flush water inlet movable between open and closed positions, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and then into said bowl, electric motor means drivingly connected to said pump means, battery means mounted on said seat section and means for selectively electrically connecting said battery means to said motor means, said electrical connecting means including a circuit having an "on/off" switch and further including a switch actuating member movably mounted on said seat section for movement between two positions corresponding to "on" and "off" position of said switch, means operable in response to movement of said actuating member to said position corresponding to the "on" position of said switch for moving said closure means to said open position, said pump means being located below said bowl and including an upright drive shaft, a propeller on the lower end of said shaft, said propeller including vanes operable to move flush water upwardly in the general direction of said drive shaft, and conduit means operable to convey flush water from said pump means upwardly to said bowl.
Claim 12
Dependent Claim 258 words
In a portable toilet which includes a seat section having a bowl with a bottom discharge opening and a chamber containing flush water for rinsing said bowl and flushing the contents thereof through said discharge opening, pump means operable to move water from said flush water chamber into said bowl, an enclosure for said pump means having a lower flush water inlet communicating with said flush water chamber, closure means for said flush water inlet movable between open and closed positions, said closure means in the closed position blocking flow of flush water from said chamber into said enclosure and then into said bowl, electric motor means drivingly connected to said pump means, battery means mounted on said seat section and means for selectively electrically connecting said battery means to said motor means, said electrical connecting means including a circuit having an "on/off" switch and further including a switch actuating member movably mounted on said seat section for movement between two positions corresponding to "on" and "off" position of said switch, means operable in response to movement of said actuating member to said position corresponding to the "on" position of said switch for moving said closure means to said open position, said pump means being located below said bowl and including an upright drive shaft, a propeller on the lower end of said shaft, said propeller including vanes operable to move flush water upwardly in the general direction of said drive shaft, and conduit means operable to convey flush water from said pump means upwardly to said bowl.

References Cited (Backward Citations)

US1921720A Cited
US3150684A Cited
US4185337A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-05-21 1993-11-20 1994-05-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-05-21 1997-11-20 1998-05-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-05-21 2001-11-20 2002-05-22 $7700.00 Window Closed / Lapsed

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