Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1994-04-15
1995-09-12
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340693, 341176, 455100, H04B 1034
Patent
active
054500648
ABSTRACT:
A medical alert pendant for use as a wireless remote actuation device in an emergency alarm system or the like includes a housing with a circuit board assembly and a resilient mounting and sealing membrane mounted therein. The housing includes an upper housing section which has an opening in the surface thereof, and a lower housing section. The circuit board assembly includes a power source, a signal transmitter and a depressible switch which activates the transmitter. The membrane is positioned between the housing sections and includes a flexible button which is disposed in the housing opening and juxtaposed to the switch on the circuit board assembly. The depression of the flexible button will operate the switch on the circuit board. The membrane includes a first peripheral seal which seals the juncture between the housing sections and a secondary seal which seals the opening in the upper housing section. The membrane includes a support structure for receiving and supporting the circuit board assembly between the respective housing sections. The membrane includes a flexible web portion which allows the membrane to flex to accommodate negative pressure in the housing without causing air or water vapor to be drawn into the housing.
REFERENCES:
patent: 4121160 (1978-10-01), Cataldo
patent: 4491970 (1985-01-01), LaWhite et al.
Kanner Rowland W.
Williams, Jr. Fred E.
Ryder International Corporation
Swann Glen
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