George G Grech

US Patent:

6397405, Jun 4, 2002

Filed:

Apr 11, 2000

Appl. No.:

09/547121

Inventors:

George Grech - Garden City MI
John E. Hammond - Redford MI
James Kenneth Miller - Ypsilanti MI

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D 1100

US Classification:

4420, 4432, 4421

Abstract:

A flush toilet having two nozzles located within its bowl. The two nozzles being oriented in opposite directions and alternately providing pulses of flush water into and around the bowl.

US Patent:

6584623, Jul 1, 2003

Filed:

Jun 4, 2002

Appl. No.:

10/162535

Inventors:

George Grech - Garden City MI
John E. Hammond - Redford MI
James Kenneth Miller - Ypsilanti MI

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D 1110

US Classification:

4434

Abstract:

A flush toilet having two nozzles located within its bowl. The two nozzles being oriented in opposite directions and alternately providing pulses of flush water into and around the bowl.

US Patent:

D484957, Jan 6, 2004

Filed:

Nov 30, 2002

Appl. No.:

29/171810

Inventors:

George Grech - Garden City MI
Jason Smith - West Bloomfield MI
John E. Hammond - Redford MI

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

2302

US Classification:

D23295

US Patent:

6871361, Mar 29, 2005

Filed:

Jul 1, 2003

Appl. No.:

10/611338

Inventors:

George Grech - Garden City MI, US
John E. Hammond - Redford MI, US
James Kenneth Miller - Ypsilanti MI, US

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D011/17

US Classification:

42525, 42521

Abstract:

A flush toilet having two nozzles located within its bowl. The two nozzles being oriented in opposite directions and alternately providing pulses of flush water into and around the bowl.

US Patent:

7861331, Jan 4, 2011

Filed:

Nov 26, 2003

Appl. No.:

10/540006

Inventors:

George Grech - Garden City MI, US
Michael Fritz - Oconomowoc WI, US
Michael Harris - Dexter MI, US
Jason Smith - West Bloomfield MI, US
Steve Meyer - Whitmore Lake MI, US
Craig Karagitz - Whitmore Lake MI, US
Eric Krupp - Canton MI, US
Brian Kelly - Mason MI, US

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D 11/00

US Classification:

4420, 4431, 4308

Abstract:

A reduced water consumption flush toilet for a motor vehicle includes a bowl assembly, a waste ball valve assembly and a water valve assembly. The bowl assembly defines a bowl and a discharge opening at a lower end of the bowl. The waste ball valve assembly is mounted to the flush toilet for selectively opening and closing the discharge opening of the bowl assembly. The water valve assembly delivers a source of flush water to the bowl. The water valve assembly includes a water valve operable in a water valve open condition and a water valve closed condition. The flush toilet further includes a common actuator for controlling both the waste ball valve assembly and the water valve assembly. The common actuator is movable from a first position to an intermediate position and from the intermediate position to a second position such that in the first position the waste ball valve assembly closes the discharge opening and the water valve assembly is in the closed condition, in the intermediate position the waste ball valve assembly closes the discharge opening and the water valve assembly is in the open position for adding water to the bowl, and in the second position the waste ball valve assembly opens the discharge opening and the water valve assembly is in the open position for flushing the bowl.

US Patent:

8176577, May 15, 2012

Filed:

Jan 4, 2011

Appl. No.:

12/984126

Inventors:

George Grech - Garden City MI, US
Michael Harris - Dexter MI, US
Jason Smith - West Bloomfield MI, US
Steve Meyer - Whitmore Lake MI, US
Eric Krupp - Canton MI, US
Brian Kelly - Mason MI, US

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D 11/00

US Classification:

4420, 4308

Abstract:

A flush toilet includes a bowl assembly defining a bowl. The bowl assembly has a discharge outlet at a lower end and a ledge circumferentially extending about a substantial portion of the bowl. The bowl has a rear surface that is generally flat and vertical. The rear surface transitions to the ledge as the bowl continues clockwise and counter clockwise from the rear surface. A horizontal dimension of the ledge increases as the ledge continues from the rear surface to a front of the bowl. An angle of the ledge increases as the ledge continues from the rear surface to the front. A maximum slope of the ledge is located proximate the front. A nozzle is mounted to the bowl assembly for pressurizing a source of flush water and delivering the source of flush water to the bowl for rinsing and flushing of the bowl. The nozzle is positioned at a rear portion of the bowl and produces a first flow of water in a first circumferential direction about the bowl and a second flow of water in a second circumferential direction about the bowl. The second circumferential direction is opposite to the first circumferential direction.

US Patent:

8276218, Oct 2, 2012

Filed:

Apr 9, 2007

Appl. No.:

11/697768

Inventors:

George Grech - Garden City MI, US

Assignee:

Thetford Corporation - Ann Arbor MI

International Classification:

E03D 9/10

US Classification:

4319, 4320, 241 4617

Abstract:

A macerator toilet comprising a toilet body include a bowl portion and a base portion, the base portion defining a chamber and a macerator unit in fluid communication with the bowl portion, the macerator unit completely disposed in the chamber and operative for macerating a waste received from the bowl unit and pump the waste from the macerator toilet.

US Patent:

20030033664, Feb 20, 2003

Filed:

Jul 24, 2002

Appl. No.:

10/202403

Inventors:

George Grech - Garden City MI, US

International Classification:

E03D001/00

US Classification:

004/321000

Abstract:

A waste management system for a vehicle includes toilet, an accumulator tank and a main waste tank. The accumulator tank is in fluid communication with and fixedly mounted relative to the toilet. The main waste tank is remotely positioned relative to the toilet. A flexible fluid coupling connects the accumulator tank and the main waste tank such that the toilet and the accumulator tank can be translated relative to the main waste tank. In certain applications, the toilet is mounted in a movable cabin portion of the vehicle that is coupled to a fixed cabin portion of the vehicle for movement between an extended position and a retracted position.