High performance flush toilet

Patent 5983413 Issued on November 16, 1999. Estimated Expiration Date:

March 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1964876

2129398

3086217

3484873

Water-saving toilet bowl
Patent #: 4197599
Issued on: 04/15/1980
Inventor: Tsai

Toilet flush control device
Patent #: 4945578
Issued on: 08/07/1990
Inventor: Jomha, et al.

Water closet metering device
Patent #: 5040247
Issued on: 08/20/1991
Inventor: Stevens

Vacuum assisted toilet
Patent #: 5142712
Issued on: 09/01/1992
Inventor: Hennessy

Flush water supply system for toilet stool
Patent #: 5204999
Issued on: 04/27/1993
Inventor: Makita, et al.

Replacement flush valve
Patent #: 5293650
Issued on: 03/15/1994
Inventor: Schoepe, et al.

More ...

Inventors

Assignee

Toto Ltd.

Application

No. 035092 filed on 03/05/1998

US Classes:

4/420, Bowl4/415, Water saver4/424Extra trap or false trap

Examiners

Primary: Walczak, David J.

Attorney, Agent or Firm

Foreign Patent References

1-138980 JP 09/13/1989
2-35135 JP 02/13/1990
2-35134 JP 02/13/1990
3-40380 JP. 04/13/1991
4-32178 JP. 05/13/1992
5-83077 JP 11/13/1993
7-54388 JP 02/13/1995

International Class

E03D 011/00

Foreign Application Priority Data

1994-12-28 JP

Abstract

A flush toilet bowl comprises a bowl part (1) and a discharge trap (2) formed continuously at the bottom of the bowl part, and the discharge trap (2) further comprises a rising channel (22) extending in the obliquely upward direction from the bottom of the bowl part, a first weir (27) formed at the upper end of the rising channel, a descending channel (23) extending downwardly from the first weir, and a cross-laid channel (24) extending substantially in the horizontal direction from the lower end of the descending channel and having a discharge opening (25) at the end. The cross-laid channel (24) is provided with an upwardly bent second weir (28) between the lower end of the descending channel and the discharge opening, and a gathered water part (29) is formed between the second weir (28) and the lower end of the descending channel and, simultaneously, the descending channel is formed in the vicinity of the lower end thereof with a horizontal part (26) extending horizontally toward the cross-laid channel (24).