Texas Instruments Corporation

Aziz Rahman

Gary A Baker

David A Czarn

Alan M Sadler

A bracket 14 for mounting a lead frame 12 having pressure responsive electrical switches 20 is provided with a pair of bores 88 through the bracket at each switch station in alignment with recessed portions 78 and 86 in the bottom surface of the switch housing. A layer 92 of filter material is disposed between the bores and the recessed portions so that fluid flowing through the bores into the recessed portions will be forced to flow through the filter material to exclude particles of contamination larger than a selected size.

Vented pressure switch apparatus

A normally open pressure responsive switch having upper and lower housings with a snap acting member and an electrically conductive member sandwiched therebetween. The housings each include a body with a hollow center portion and the lower housing has a contact in the center portion extending externally of the member. The snap acting member is in constant engagement with the sandwiched conductive member and normally out of engagement with the contact. When pressure is applied which is sufficient to cause the snap acting member to snap connection is made with the electrically conductive member in the lower assembly. An elastomeric sealing member is mounted in the upper housing and has a neck portion received in the hollow center portion, an integrally attached flange biased against the electrically conductive member and lower housing and an integrally attached lobe extending above the upper housing to seal off the hollow center portion when the switch is mounted at a switch receiving seat.

Growing community of inventors

Attleboro, MA, United States of America

Aziz Rahman