Check valve for water dispenser bottle

US4717051A · kind A · utility

Inventor

• Guy Leclerc · Fredericton, CA

Key dates

• Filing date: Sep 2, 1986
• Grant date: Jan 5, 1988
• Expiry date: Sep 2, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B67D3/02
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A check valve for removably fitting the mouth of an invertible water bottle to be placed on a water dispenser, the bottle being made of synthetic resin and provided with an external circular rib at its mouth. The valve closes the mouth during water-bottle inversion until the check valve contacts an element of the water dispenser when the bottle is in inverted position and rests on a water dispenser. The check valve includes a cylindrical body adapted to be removably fitted over the water bottle mouth and having an outer closure wall provided with a central opening forming a tapered female valve seat. The check valve further includes a male valve member part having a disc-like head axially movable within the body between the mouth and the closure wall, a stem secured to the head and extending through the central opening of the closure wall, and a tapered male valve seat portion integral with the stem and adjacent the head. Upon water-bottle inversion, the water in the bottle acts upon the valve head to close the valve. An inward force exerted on the stem opens the valve.