Toilet flushing assembly

US4115881A · kind A · utility

Inventor

• Andrew Stone · Somerville, US

Key dates

• Filing date: Jul 25, 1977
• Grant date: Sep 26, 1978
• Expiry date: Jul 25, 1997

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E03D1/145
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

An improved toilet flushing assembly is provided of the type which includes a water tank, a water discharge pipe disposed at least partially within the tank, and which has an opening at the upper end thereof, defining a primary flush valve seat, a flush valve ball communicative with the flush valve seat, means for moving the flush valve ball between an open and closed position relative to the primary flush valve seat, and a generally upstanding overflow pipe disposed within the tank and having a lower open end which communicates with the discharge pipe. The improved assembly provides an overflow pipe having an opening therein disposed at a level above the primary valve seat, which opening defines a secondary flush valve seat. A movable valve member is disposed within the tank for communication with the secondary valve seat and means are provided for moving the valve member between an open and closed position relative to the secondary flush valve seat, so as to permit, in the open position thereof, a partial discharge of the water held in the tank through the overflow pipe and, in turn, the discharge pipe, while the primary flush valve ball remains in a closed position relative to t…