Block mounting of pressure switch cartridge

Electricity: circuit makers and breakers – Fluid pressure – Plural switch

Patent

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Details

200 83J, 2003021, H01H 3534

Patent

active

057289867

ABSTRACT:
A cartridge type pressure switch is formed with a cup-shaped contact flanged outwardly at its rim and slidably nested in an annular spacer. A flexible diaphragm has an integrally formed annular bead ring which is stretched over the spacer to secure the diaphragm in place over the cup-shaped contact. A spring nested in the cup-shaped contact has the outer end registered against a deck or spring retainer. A pair of stationary contacts on opposite sides of the spacer have terminal portions extending outwardly through the deck. The spring biases the cup-shaped contact in a direction to seat the flange against the stationary contacts. When the cartridge is inserted in a bore, the bead ring is compressed to seal the cartridge in the bore. When a plurality of cartridges are received in bores in a block or manifold, a spacer and lead frame are commonly received over the terminal portions of the contacts on each cartridge for providing electrical connection; and, a cover is received over the lead frame and attached to the block. Alternatively a single cartridge is inserted in a bore and retained by a plate, with terminal pins connected to cut outs in the terminal portions of the contacts.

REFERENCES:
patent: 3319024 (1967-05-01), Quatredeniers
patent: 3594522 (1971-07-01), Colglazier et al.
patent: 4195209 (1980-03-01), Mlyniec
patent: 4508014 (1985-04-01), Shoff
patent: 4861953 (1989-08-01), Sanford
patent: 5004876 (1991-04-01), Sogge et al.
patent: 5338908 (1994-08-01), Rahman et al.
patent: 5422791 (1995-06-01), Bentz et al.

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