Abstract: An example apparatus to prevent side load in hydraulic override pumps includes a lever rotatably mounted to a support. The apparatus includes a pump cylinder rotatable about a first end of the pump cylinder. The apparatus also includes a pump rod operatively coupled to the lever to move within the pump cylinder based on rotation of the lever. The pump cylinder rotates when the pump rod moves within the pump cylinder.

Abstract: A linear compressor is provided. The linear compressor includes a cylinder having a refrigerant compression space inside; a piston, linearly reciprocating inside the cylinder to compress a refrigerant; a frame having the cylinder affixed at one end and a mounting groove at a lower portion; an oil feed assembly positioned in the mounting groove to supply oil; an oil supply path in a linear shape, positioned at a lower portion inside the frame to communicate with the mounting groove and with a bottom of the cylinder and which supplies oil between the cylinder and the piston; and an oil recovery path in a linear shape positioned at an upper portion inside the frame to communicate with an upper side of the frame and with a top of the cylinder and which recovers the oil between the cylinder and the piston. The oil feed assembly is in kit form.

Abstract: A lubricant circulation system (10) includes a lubricant supply cup (1) containing a lubricant (6) and having an oil return hole (13) connected to an oil return pipe (16) of a rotary equipment (5). A pump seat (2) is coupled to the lubricant supply cup (1) and includes a pump chamber (253) and a pump outlet (254) connected to an oil supply pipe (256) of the rotary equipment (5). The lubricant (6) in the lubricant supply cup (1) flows into the pump chamber (253). A pump body (3) is coupled to the pump seat (2) and includes a pressure chamber (34) having a pressure inlet (341) and a pressure outlet (342) with a pressure relief valve (35). By introducing a pressurized fluid (7) from the pressure inlet (341) into the pressure chamber (34), a piston rod (27) in the pump chamber (253) reciprocally moves to allow the lubricant (6) in the pump chamber (253) to be successively supplied to the rotary equipment (5).