About 15 results
https://drivepatents.com/patents/969784 · 24 Sep 2014
A plunger pump (1) is provided which comprises: a pump body (100) having a cylinder hole (10) with an expanded diameter section (11); a plunger (40) defining, together with the lid member (20), a pump chamber (30); and a coiled spring (50) disposed within ...
https://drivepatents.com/patents/979376 · 22 Jan 2014
According to an aspect of the present invention, there is provided a piston pump (1), comprising: a cylinder (10) formed in a pump body (100); a piston (40) reciprocatable within the cylinder (10); and a seal member (50, 50A) interposed between the cylinde...
https://drivepatents.com/patents/992986 · 6 Feb 2013
The guide ring structure (48) has a center area that is extended along a longitudinal direction. A radial force is applied in a resilient edge area. The elasticity of the resilient edge area is set higher than the elasticity of the center area. A V-shaped ...
https://drivepatents.com/patents/995498 · 5 Dec 2012
The objective is to provide a sealing device provided with an accumulated pressure relief function. In order to achieve the objective, a seal ring is combined with a back ring, and the back ring is comprised of a lip packing wherein one end of an annular b...
https://drivepatents.com/patents/1014130 · 6 Apr 2011
A plunger pump includes: a pump body having a cylinder hole; a lid member configured to seal one end of the cylinder hole; a plunger which is slidably attached within the cylinder hole, one end of the plunger defining a pump chamber between the one end and...
https://drivepatents.com/patents/1067399 · 17 May 2006
A pump (15L,15R) of an electronically-controlled brake system including a bore (25) formed in a modulator block (18) to communicate with inlet (23) and outlet (24) ports formed in the modulator block (18), a piston (30) connected to a spindle (21) of a mot...
https://drivepatents.com/patents/1068139 · 19 Apr 2006
Piston pump (10) has stepped piston (50,50') in a stepped bore (39,40), of the holding fixture (3), within a cylindrical socket (50,50'), which is movable in an axial direction Ax. Stepped piston is designed at one end (51,51') partially like hollow tubing...
https://drivepatents.com/patents/1072837 · 2 Nov 2005
The pump has a movable piston (2), a cylinder element (3), in which the piston is partly led, and a separate second guide (4) with a guidance section (6). The piston is led into, and a filter (5) is integrated into the guide. The piston has a drilled hole ...
https://drivepatents.com/patents/1081753 · 8 Dec 2004
A plunger pump, includes: a plunger pump unit including a pump chamber and a plunger for pressing a hydraulic fluid in the pump chamber to perform a discharging operation of the hydraulic fluid; a motor; and a camportion driven by the motor to rotate and p...
https://drivepatents.com/patents/1086609 · 9 Jun 2004
A pump for anti-lock brake systems, which has inlet and outlet check valves (37;34) with improved structures capable of enhancing the operational performance of the pump while drawing or discharging brake oil into or from the pump. In the pump for the anti...