Caterpillar Tractor Co.

Other

Gary A Hakes

Hugh C Morris

George W Cackley

Norma G Shook

Stephen D Burdette

Dale Langston

Glenn E Himstedt

An apparatus for indicating the proper seating of a high voltage fuse in its mounting assembly in connection with electrical switchgear utlilizes a spring loaded flag positioned adjacent a latching protrusion for engagement by the latch of the mounting assembly such that the flag is moved from an obscured position to an visible position only when the latch is in its affirmatively locked position.

Apparatus for positive indication of fuse latch operation in electrical switchgear

An integrated bushing component for use in conjunction with pad mounted high voltage three-phase switch gear located with an electrical cabinet. The integrated bushing component providing an electrically insulated conductive path through a dead front barrier separating a first switch gear confinement area, wherein a first electrical circuit is connected to the switch gear mounted therein, and an second electrical connection confinement area, wherein connection to a second electrical circuit is provided by an end of the integrated bushing component. The switch gear includes a switch arm selectively positionable between an open non-conducting position and a closed conducting position. The switch arm provides a primary conductive path connecting a first electrical circuit with a terminal when the switch arm is placed in the closed conducting position. The integrated bushing includes, in a unitary component, a conductive inner core and a pump housing which receives an electrical arc extinguishing pump therein. The arc extinguishing pump defines a movable contact to provide a secondary conductive path between the terminal and a probe connector conductively attached to the switch arm so as to contain and extinguish an arc created upon movement of the switch arm form the closed position to the open position.

Integrated bushing component

A crawler tractor vehicle having steering clutches and associated steering brake includes a control apparatus for each clutch and brake system, including a valve made up of a valve body, and a clutch valving spool and a brake valving spool movably associated therewith. In one embodiment, the clutch valving spool and brake valving spool are identical in configuration, and are disposed in a common bore. Actuator means are associated with such clutch valving spool and brake valving spool, in one embodiment including an actuator assembly made up of a plurality of plungers movable relative to each other and relative to the valve body to provide particular movement of the clutch and brake valving spools. In another embodiment, the actuator means comprise mechanical linkage means, for providing movement of brake and clutch valving spools positioned in respective separate bores defined by the valve body.

Vehicle steering brake and clutch control

A crawler tractor vehicle having fluid actuated steering clutches and associated steering brake includes a control apparatus for each clutch and brake system, including a valve made up of a valve body, and a clutch valving spool and a brake valving spool movably associated therewith. The vehicle further includes a transmission operable upon supply of fluid pressure thereto and a priority valve for providing that a certain level of fluid pressure is supplied to the brake system to provide a disengagement thereof prior to fluid pressure being supplied to the transmission.

Growing community of inventors

North Brunswick, NJ, United States of America

Gary A Hakes