Systron Donner

Philip D Flanner

Harold D Morris

Gerald R Newell

George G Malcom

A passive mass-spring type of sensing device or other such device for monitoring a particular parameter, for example mechanical vibration, is disclosed herein. This device utilizes an electrically conductive coil having a given impedance disposed within a magnetic field in a way which results in relative movement between the coil and the field corresponding to the particular parameter being monitored, whereby to produce a monitoring signal in the form of a voltage which also corresponds to the parameter being monitored. The device includes a circuit arrangement for electronically damping the relative movement recited above in a substantial way while, at the same time, maintaining the monitoring signal at a measurable value.

Passive mass-spring type of sensing device having electronic damping

Linear accelerometer mechanism having a mounting flange with an opening therein. A body is to be carried by the mounting flange and also has an opening therein. A float, a pendulous elongated member having one end secured to the float and a cylindrical torque coil secured to the other end of the pendulous member are disposed in the opening of the body. Means is provided for pivotally mounting the float, the pendulous member and the torque coil in the body to permit pivotal movement about a pivot axis. A planar conducting element is carried by the pendulous member. Pickoff means is carried by the body adjacent to the planar conducting element. First and second covers are disposed on opposite sides of the flange and close the body and are secured to the flange to aid in providing liquid-tight seals between the covers and the flange.

Linear accelerometer mechanism

Linear accelerometer mechanism having a housing and a pendulous member. Means is provided for pivotally mounting the pendulous member in the housing. A torque coil is carried by the pendulous member and first and second magnets are mounted in the torque coil for establishing a magnetic field in the vicinity of the torque coil. A conducting planar element is carried by the pendulous member and pick-off means is mounted within the housing in the vicinity of the pendulous member.

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Pleasant Hill, CA, United States of America

Philip D Flanner