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Expansible chamber devices January recently filed with US Patent Office 01/11

20110017060 - Hydraulic pump: A pump has an axial drive shaft with a cam fence that extends radially outwardly from an axis of the drive shaft. The cam fence axially displaces, in respective cylinders, each of a plurality of elongate pistons arranged in parallel to and around the axis and angularly spaced apart from... Agent: Momkus Mccluskey, LLC

20110011257 - Electro-hydraulic actuator having end cap with split bushing: An electro-hydraulic actuator includes a hydraulic pump, an electric motor operable for driving the hydraulic pump, a piston/rod assembly that is movable in response to fluid from the hydraulic pump, and a housing. A portion of the housing defines a cylinder bore within which a piston of the piston/rod assembly... Agent: Parker-hannifin Corporation Hunter Molnar Baker Morgan

20110011258 - Linear compressor: The present invention discloses a linear compressor including a cylinder in which refrigerants flow to the axial direction, a piston reciprocated inside the cylinder, for compressing the refrigerants, and a linear motor for driving the piston. At least one of the cylinder and the piston is sintering molded.... Agent: Ked & Associates, LLP

20110005387 - Piston-cylinder unit: A piston-cylinder unit with a center longitudinal axis, a first end, a cylinder filled with a fluid, a piston arranged so as to be displaceable in the cylinder and which divides the cylinder into a first work space remote of the first end and a second work space close to... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20110005386 - Lubricating device for a linear motion device: A linear motion device includes a housing which extends in a longitudinal direction, and in which a rotor movable in the longitudinal direction is accommodated, the housing including a lubricant supply device, via which the rotor may be supplied with lubricant. The lubricant supply device includes a plunger mounted on... Agent: Michael J. Striker

20110000364 - Pump with pivoting needle: A hand pump with a rotatable portion of the pump head. The needle or adapter for attaching the pump to an inflatable is associated with the rotatable portion of the pump head so that the needle may be positioned in a first position for use and a second position for... Agent: Plumsea Law Group, LLC