Abstract: A hidden object sensor which detects objects behind a surface. The hidden object sensor includes a housing. A capacitive sensor is carried by the housing. The capacitive sensor includes two or more electrodes. The hidden object sensor also includes an inductive sensor disposed in the housing. The inductive sensor surrounds the capacitive sensor in a radial direction such that there is a gap between the inductive sensor and the capacitive sensor.

Abstract: A hidden object sensor which detects objects behind a surface. The hidden object sensor includes a housing. A capacitive sensor is carried by the housing. The capacitive sensor includes two or more electrodes. The hidden object sensor also includes an inductive sensor disposed in the housing. The inductive sensor surrounds the capacitive sensor in a radial direction such that there is a gap between the inductive sensor and the capacitive sensor.

Abstract: A hydraulic valve assembly includes a pressure compensating valve in which a compensator spool is slideably received in a bore. A pre-compensator gallery connected to a metering orifice, a preload gallery leading to a hydraulic actuator, an auxiliary pump supply passage, and a load sense passage all open into the bore. The compensator spool moves in response to a pressure differential between the pre-compensator gallery and the load sense passage. That movement selectively opens and closes a first path between the pre-compensator gallery and the a preload gallery, and a second path between the auxiliary supply passage and the load sense passage. Control of these paths maintains a constant pressure drop across the metering orifice and generates a pressure signal that is employed to regulate pressure at an outlet of a pump.

Abstract: A hydraulic valve assembly includes a pressure compensating valve in which a compensator spool is slideably received in a bore. A pre-compensator gallery connected to a metering orifice, a preload gallery leading to a hydraulic actuator, an auxiliary pump supply passage, and a load sense passage all open into the bore. The compensator spool moves in response to a pressure differential between the pre-compensator gallery and the load sense passage. That movement selectively opens and closes a first path between the pre-compensator gallery and the a preload gallery, and a second path between the auxiliary supply passage and the load sense passage. Control of these paths maintains a constant pressure drop across the metering orifice and generates a pressure signal that is employed to regulate pressure at an outlet of a pump.