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Proserv Operations Inc patents


Recent patent applications related to Proserv Operations Inc. Proserv Operations Inc is listed as an Agent/Assignee. Note: Proserv Operations Inc may have other listings under different names/spellings. We're not affiliated with Proserv Operations Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "P" | Proserv Operations Inc-related inventors


Improved shear seal assembly

A seal assembly includes a first sealing element, a second sealing element, a pin member, and a sealing ring. The first sealing element has a recess formed therein and the second sealing element has a recess formed therein. The pin member has a first end portion and a second end... Proserv Operations Inc

Low friction hydraulic circuit control components

A hydraulic control circuit component such as a valve is configured which sliding surfaces. At least one of the sliding surfaces is configured as a single crystal material, such as ruby or sapphire.... Proserv Operations Inc

Non-interflow directional control valve

A directional control valve having low or no interflow, minimal parts, and configured for easy repair, is provided. In one embodiment, a seat is slidingly sealably movable with respect to opposed plates, such that an inlet in one of the plates communicates with an internal volume of the seat, and... Proserv Operations Inc

Robust in-line valve

A poppet valve is provided wherein the poppet and seat are integrally aligned to a bore within a housing of the valve. The poppet is configured to reciprocate within a guide also aligned to the bore, and a spring is provided between the guide and the poppet to bias the... Proserv Operations Inc

Latching poppet valve

A directional control valve for selectively communicating a valve outlet to one of a vent port and a pressure supply port includes a poppet extending through a cage. Relative positioning of the poppet to the cage selects which of the vent and pressure supply port is communicated to the valve... Proserv Operations Inc

Shuttle valve with durable soft seal

A shuttle valve having a cage fixed in the cross bore thereof by opposed inlet adaptors extending into opposed first and second inlets is provided. A shuttle is reciprocally located in a bore in the cage, to selectively seal one of the first or second inlets from fluid communication with... Proserv Operations Inc

Dynamic variable orifice

A dynamic variable orifice includes a housing within which are located a rotor having at least one opening extending therethrough, and at least one seat ring, having an opening therethrough, biased thereagainst. In response to a pressure spike occurring at the inlet of the dynamic variable orifice, the rotor moves... Proserv Operations Inc








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