Other

Foster-miller, Inc.

Donald A MacLeod

Patrick Callahan

James A Carter

A blast mitigating seat features a base and a seat frame. The seat frame includes a pan and a backrest including an open area for gear worn by a user. A first damping subsystem between the base and the seat frame has a first force/stroke relationship and a second damping subsystem between the base and the seat frame has a second force/stroke relationship.

Blast mitigating seat

An automatic resetting subcircuit is disclosed in a remotely actuated power distribution switch control circuit characterized by a two-position electromechanical control for an automatic actuation mechanism for operating the switch. The control is provided with two elements, each for moving the control in an opposite direction between the open and closed positions of the switch. The circuit includes a first energy storage capacitor for storing energy received from a source remote from the circuit. A first thyristor, when triggered by a locally generated control signal, applies the energy stored in the first energy storage capacitor to one of the elements to cause the switch to be operated in a predetermined direction. The automatic resetting subcircuit includes a second energy storage capacitor for storing energy received from the remote source with the second energy storage capacitor being electrically isolated from the first thyristor. A sensor switch responds to the position of the distribution switch and is connected to reverse the connections of the first and second energy storage capacitors in accordance with the position of the power distribution switch. A time delay circuit is provided in conjunction with a second thyristor which is connected to the second energy storage capacitor and to the sensor switch. The gate of the thyristor is connected to the time delay circuit and to a transistor base controlled by the voltage on the first energy storage capacitor. If the voltage thereon goes to zero, indicating a signal switch, and the power distribution switch does not operate, the second thyristor passes the energy stored in the second energy storage capacitor to the other element of the electromechanical control to return the control to its initial position.

Automatic resetting control circuit for air switch operator

A plurality of control stations spaced along conductor lines; a normally closed disconnect switch at each station for connecting or disconnecting said conductor lines; a fault detector at each station; a status indicator at each station to indicate the status of said fault detector and of said disconnect switch; an electrically actuated indicator device remote from said stations; remote power source; and remote control selector means for selectively connecting the status indicator of a selected station to said indicator device for indicating the status of said fault detector and of said disconnect switch; said selector means being also capable of connecting said remote power source to the disconnect switch a selected station for opening or closing said disconnect switch.

Growing community of inventors

Oakland, CA, United States of America

Donald A MacLeod