Abstract A pressure switch, for controlling the water level in a washing machine, is formed by a casing closed at one end by a flexible diaphragm fitted to a rim of the casing, a dished rigid cover fitted over the diaphragm to define a pressure chamber and an electric switch disposed within the casing for operation by movement of the diaphragm in response to pressure changes in the chamber. The pressure inlet to the chamber is formed by a pipe connection integral with the casing and having an outlet communicating with the chamber via a passage which passes through the rim of the casing, through a portion of the diaphragm sealed between the rim of the casing and the cover and through a channel formed on the inside of the cover.
Inventors
👤 C Pijpers
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-02 14:16
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/08; D06F39/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A pressure switch comprising, a casing having a cylindrical wall having a rim defining an open end of the casing, a hose connection integral with the casing and leading to a conduit formed in the casing, a boss projecting from said rim, said conduit leading through said boss, a flexible diaphragm covering said open end and having a peripheral bead seated on said rim with an eyelet formed in the bead to fit around said boss whereby the conduit projects through the boss centrally of said eyelet, a switch mounted in the casing and operatively connected to the diaphram, a cover fitting over the diaphragm and forming a pressure chamber in cooperation with the diaphragm, said cover having a flange overlying said bead and formed to secure the cover to the casing, said flange having a channel formed therein communicating with the space between said conduit and the cover at one end and communicating with said pressure chamber at the other end of the channel.
Claim 2
Dependent Claim
165 words
A pressure switch comprising, a casing having a cylindrical wall having a rim defining an open end of the casing, a hose connection integral with the casing and leading to a conduit formed in the casing, a boss projecting from said rim, said conduit leading through said boss, a flexible diaphragm covering said open end and having a peripheral bead seated on said rim with an eyelet formed in the bead to fit around said boss whereby the conduit projects through the boss centrally of said eyelet, a switch mounted in the casing and operatively connected to the diaphram, a cover fitting over the diaphragm and forming a pressure chamber in cooperation with the diaphragm, said cover having a flange overlying said bead and formed to secure the cover to the casing, said flange having a channel formed therein communicating with the space between said conduit and the cover at one end and communicating with said pressure chamber at the other end of the channel.