초록 ▼

A pressure switch is illustrated that includes only three piece parts--two dimpled covers and a spacer. By selecting both the type and thickness of cover materials, switching pressure ranges can be selected to accommodate a very wide range of operating pressures. Fine adjustment of the switching pre

A pressure switch is illustrated that includes only three piece parts--two dimpled covers and a spacer. By selecting both the type and thickness of cover materials, switching pressure ranges can be selected to accommodate a very wide range of operating pressures. Fine adjustment of the switching pressure may be made by modifying the cover dimples. Reliability and a hermetic seal is attained through the use of appropriate materials for the covers and spacer, together with active metal braze seals which provide high temperature, moisture and chemical resistance. A vacuum port is added for providing the ability to modify the air pressure within the pressure switch.

대표청구항 ▼

[ We claim:] [1.] A pressure switch, comprising:a) a first and a second electrically conductive diaphragm, disposed generally parallel to each other including:a1) a first and second dimple integral to the first and second diaphragm, respectively;a2) a first and second terminal integral with the firs

[ We claim:] [1.] A pressure switch, comprising:a) a first and a second electrically conductive diaphragm, disposed generally parallel to each other including:a1) a first and second dimple integral to the first and second diaphragm, respectively;a2) a first and second terminal integral with the first and second diaphragm, respectively, each terminal extending perpendicular to each diaphragm, the second terminal extending beyond the first diaphragm;b) a spacer electrically and mechanically spacing the first diaphragm from the second diaphragm; andc) a braze material having both a filler and activating metal bonding the first and second diaphragms to the spacer such that an external pressure exceeding a first pressure level causes the first and second dimples to come into electrical contact and creates an electrical path between the first and second terminals.