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US 5,291,917 AGranted
Housing for a vacuum valve unit
AssigneeInax Corporation
InventorJunichi Yamanaka
Life of this patent
Estimating the term…
Abstract
A housing for a vacuum valve unit is cylindrical in shape and made of synthetic resin. A vacuum valve assembly is mounted within the housing. The housing is composed of a pair of identical left and right housing halves shaped such that the housing is axially divided. Ribs are attached to the inner surfaces of the left and right housing halves to sandwich the vacuum valve assembly.
Claims7
A housing made of synthetic resin and adated for use in a vacuum valve unit of a vacuum sewage system, comprising:
- a left housing half including
- a semicylindrical body,
- two flanges extending outwardly from opposite edges of said body,
- ribs attached to the inner peripheral surface of said body adjacent to said opposite edges of said body and extending horizontally when said housing is arranged in an upright position,
- semicircular recesses defined in free ends of said ribs, and
- a semicircular concaved portion formed in one of said flanges;
- a right housing half completely identical in shape to said left housing half;
- said flanges of said left and right housing halves being matingly connected by connecting means so that said left and right housing halves form a cylindrical housing;
- said concaved portions defining an opening to receive a pipe when said flanges are mated together;
- and
- said free ends of said ribs being brought into contact with each other when said left and right housing halves are connected together whereby said semicircular recesses in said free ends of said ribs define openings to receive pipes.
8 more elements
Dependencies are inferred from the claim text.