Unit for the administration of liquids to animals, more specially a watering bowl

US4394847A · kind A · utility

Inventors

• Georg Langenegger · Freising, DE
• Franz Bauer · Herzogenaurach, DE
• Josef Langenegger · Woldegk, DE

Key dates

• Filing date: Aug 7, 1981
• Grant date: Jul 26, 1983
• Expiry date: Aug 7, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7374
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

For controlling the rate of supply of water to a watering bowl, a diaphragm valve with a diaphragm is placed in the water connection system, one side of the diaphragm resting against a barrel-like part, the space within the barrel being joined up, for example, with the bowl while the space round the barrel on the same side of the diaphragm is joined up with the water inlet so that, when the diaphragm is moved clear of the end of the barrel, water may make its way from the inlet into the bowl. On the opposite side of the valve diaphragm there is a pilot control space into which water may make its way through a small hole in the diaphragm and out of the pilot control space into the bowl through a pilot valve system in the form of an opening and a moving pilot valve which is worked by a lever or the like in the bowl, by a float or by a pilot diaphragm acted upon by the liquid level in the bowl. When the pilot valve is shut, water will slowly make its way into the pilot control space so that the pressure therein goes up to the pressure of water let into the space on the other side of the diaphragm with the outcome that the diaphragm is sealingly pressed against the end of the barrel. I…