A sensor wherein an operator such as a firing pin is resiliently biased in one axial direction within a guide tube toward actuated position. A plurality of balls freely received within apertures in the guide tube engage a radially outwardly tapered shoulder of the operator and a tapered annular internal wall of a seismic mass to hold the operator against movement. In the unidirectional embodiment of the sensor, the narrower opening of the tapered wall has a diameter less than the diametric dista...

A sensor includes a base plate and a generally vertically extending tubular guide provided intermediate the ends thereof with two diametrically opposed radial openings. A firing pin is slidably mounted within the guide and is spring biased toward one end of the guide to an actuated position wherein the pin engages a cartridge to fire the cartridge and actuate an inflatable cushion of an occupant restraint system. An annular seismic mass surrounds the guide and is pivotally supported thereon for ...

A bidirectional sensor having an operator mounted within a tubular guide and spring biased in one direction. The operator is constrained against movement by the engagement of a plurality of balls with a shoulder thereof. The balls are held against being cammed outwardly through apertures in the guide by an internal annular wall of a seismic mass. Spring seats extending between spaced annular walls of the mass and a common stop on the sensor housing are engageable by opposing threshold springs.

A sensor includes a cylindrical housing having an apertured planar base wall and contact plate. An axial pole magnet is mounted on the base wall and located normal to the aperture. The magnetic flux of the magnet maintains a ball in seated relationship within a ball seat provided by the embossed opening of the apertured plate. The OD of the ball is greater than that of the magnet. A contact ring is mounted on a circular sidewall of the housing and includes a peripheral series of integral cantile...

A sensor for in vivo amperometric measurement of selected components, dissolved oxygen for example, of blood, cells and biological fluids generally and for general analytical use is disclosed. The sensor includes an electrode assembly which has a noble metal electrode covered with a thick hemispherical membrane consisting essentially of a sparingly cross-linked hydrophilic polymer hydrogel which reversibly dries and imbibes greater than 20% aqueous fluid while maintaining structural integrity. H...

First and second elongated conduits each have an inlet and an outlet. First and second resistive elements having a resistance related to their temperature are disposed in the first and second conduits, respectively, in heat transfer relationship with gas flowing therethrough. A mixture of a first gas and a second gas having a different thermal conductivity than the first gas is supplied to the inlet of the first conduit in a fixed ratio. A mixture of the first and second gases is supplied to the...

The sensor described in the specification and which compares the rotary wheel deceleration with the linear vehicle deceleration, comprises a mass which is subject to both decelerations and whose movement is checked by an electrical sensing means rotating with the shaft. This sensing means provides data signals in the case of an excessive difference between the two decelerations without the need of a mechanical contact between the sensing means and the mass. The description further shows sensors ...

An acceleration responsive sensor having a housing of molded dielectric material provided with an elongated sector shaped recess receiving a pendulum supported mass movable under an acceleration pulse into engagement with one or more fingers of a contact assembly within the recess. The mass and the contact assembly are mounted to the housing exteriorly of the recess and covered by a cover assembly of molded dielectric material.

A velocity or acceleration responsive sensor includes a housing having a cavity including a pair of spaced side walls which taper relative to each other and define a predetermined included angle. The side walls are joined by proximal and distal end walls. A pair of bands of flexible spring material within the housing cavity are of generally figure 8 configuration. The bands are of generally elongate shape, with their adjacent abutting portions located coplanar with the bisector of the included a...

A sensor for acceleration measurement, for example for automatic release of occupant protective devices in vehicles, especially power vehicles, in which during deceleration of the vehicle or vehicle part a control signal is produced. The sensor comprises a support, a pendulum with a seismic mass mounted on two bending bars formed in the support, resistances each provided on a respective one of the bending bars, and further resistances each arranged on the support in the region between the bendin...