Class / Patent application number | Description | Number of patent applications / Date published |
092171100 | Cylinder or liner retained in casing by casing closure or closure associated means | 13 |
20090084259 | Pneumatic Tool - A pneumatic tool includes a rotor, a cylinder, two pads, two covers, two bearings and a collar. The rotor includes a first axle formed thereon and a second axle opposite to the first axle. The cylinder includes a central space for receiving the rotor. Each of the pads is attached to an end of the cylinder and formed with an aperture through which one of the first and second axles is inserted. Each of the covers includes an aperture through which a related one of the first and second axles is inserted. Each of the bearings is attached to a related one of the covers to support a related one of the first and second axles. The collar is provided on the second axle and between the rotor and a related one of the bearings. | 04-02-2009 |
20090308243 | TWO-STAGE DOUBLE ACTING HYDRAULIC CYLINDER ASSEMBLY AND USE THEREOF IN APPARATUS FOR DIGGING AND TRANSPLANTING TREES - Two-stage double-acting hydraulic cylinders are described, in which a first, inner stage includes a piston rod and head movable within a cylinder and a second, outer stage has a cylindrical body adapted to move longitudinally between stop positions intermediate the ends of the first cylinder. The two stages are hydraulically linked to each other through the alternate introduction of hydraulic fluid selectively through an extension pressure fluid port and a retraction pressure fluid port a limited motion of the outer stage is obtained in a power stroke. Hydraulic power means of this kind is of particular value in powered apparatus for digging and transplanting trees, where minimization of the overall height of the apparatus is desirable. | 12-17-2009 |
20100095838 | Engine cylinder liner - An engine cylinder liner is provided. The engine cylinder liner includes a first liner end, a second liner end, and an inner surface extending between the first liner end and the second liner end. The engine cylinder liner also includes a first outer surface between the first liner end and a first outer surface end portion, and a second outer surface between the second liner end and a second outer surface end portion. The second outer surface end portion is closer to the first liner end, than the first outer surface end portion is to the first liner end. The engine cylinder liner further includes an inclined shoulder surface portion between the first and second outer surface end portions. | 04-22-2010 |
20100236402 | Liner Retention System - Apparatus and method for securing a cylinder liner to a pumping module. A first part of an assembly housing pistons is fastened to a pumping module and a second part of the assembly is brought against the first so that the pistons act on tensioning plates which each have a stud rod extending therefrom through the assembly at an end distal to the pumping module. Each rod has a first portion substantially surrounded in an elastomeric member and a second portion threaded to receive a nut. The rods are passed through a clamping ring on the cylinder liner and the nut is attached to the rod. Actuating the pistons causes initial compression of the elastomeric member by the tension plate and allows tightening of the nut toward the pumping module. Release of the pistons then causes expansion of the elastomeric member to urge the cylinder liner towards the pumping module. | 09-23-2010 |
20100275773 | PUMP LINER RETENTION DEVICE - A method and apparatus for maintaining a seal between a cylinder and a fluid manifold for a reciprocating force delivery device is disclosed. A cylinder retention assembly comprises a rotatable member with a variable topography surface. The rotatable member is disposed against a stop extending outwardly from the cylinder, and is fastened to the fluid manifold by a locking ring. When rotated, the rotatable member produces an axial force on the locking ring and the cylinder, urging the cylinder against the fluid manifold. The cylinder retention assembly may be used in reciprocating pumps and compressors. | 11-04-2010 |
20120118142 | Sewage Suction Device - The invention discloses a suction drainage device that comprises: a cylinder sleeve where the inside of the cylinder sleeve is provided with a step hole and the wall of the cylinder sleeve has a waste-discharging outlet; a cylinder liner with a bottom that includes a shaft hole and where the wall of the cylinder liner is provided with a flange; a piston with a piston rod; a cylinder sleeve cover with a step hole along the axis, and the body is also provided with a hanging hole; a cylinder liner lock that clutches the piston rod; a shifting fork assembly that is fixed inside the step hole of the cylinder sleeve cover; a ring shaped cylindrical liner lock seat that includes a slope and a pivot pin; an annular end cover that contains a through hole in its center, wherein: the cylinder liner is located inside the cylinder sleeve, the piston is located inside the cylinder liner; the cylinder sleeve cover is connected to the cylinder sleeve along the axis; the cylinder liner lock seat is located in between the cylinder sleeve and cylinder sleeve cover; the annular end cover caps the cylinder sleeve cover. The invention utilizes the two-stage movement of the piston and the cylinder liner, which greatly reduces the piston stroke without reducing its efficiency. Its advantages include compact structure, convenient operation and high efficiency. | 05-17-2012 |
20130092023 | COMPRESSORS WITH IMPROVED SEALING ASSEMBLIES - A compressor includes a housing; a compressor liner positioned within the housing and at least partially defining a first cylinder with an inlet and an outlet; a piston positioned within the first cylinder and configured to compress air flowing into the first cylinder through the inlet; a cylinder head at least partially defining the first cylinder; and a sealing assembly for sealing an interface between the compressor liner and the cylinder head. The sealing assembly includes a ring seal at an interface between the cylinder head and the compressor liner; a vent port on an opposite side of the ring seal from the first cylinder; and a vent tube extending between the vent port and the inlet such that air leaking through the ring seal from the first cylinder flows through the vent port, through the vent tube, and into the inlet. | 04-18-2013 |
20130333555 | Cylinder Liner with High Strength and Wear Resistance and Manufacturing Method Thereof - A cylinder liner with high strength and wear resistance and a manufacturing method thereof. The composition (% by mass) of the cylinder liner is as follows: C: 3.0-3.3%, Si: 2.0-2.3%, P: 0.3-0.6%, S: <0.1%, Mn: 0.3-0.6%, Mo: 0.1-0.3%, Nb: 0.08-0.15%, and the balance Fe. The structure of the cylinder liner is phosphorus-containing acicular ferrite and carbon-rich austenite, wherein the phosphide eutectic is no less than 3%. The cylinder liner has a hardness of HRC38-43, Rm>400 MPa, high strength and good wear resistance, solves the problem of pearlite cylinder liner with low wear resistance and cast bainite with bad corrosion resistance. | 12-19-2013 |
20140047973 | HYDRAULIC DEVICE, IN PARTICULAR LOW-PRESSURE ACCUMULATOR WITH A CLOSURE ELEMENT - A hydraulic device includes a housing and a closure element arranged thereon. The closure element is connected to the housing by torsional welding. | 02-20-2014 |
20140260955 | CYLINDER LINERS WITH ADHESIVE METALLIC LAYERS AND METHODS OF FORMING THE CYLINDER LINERS - A coated cylinder liner | 09-18-2014 |
20140326130 | FUNCTIONALLY OPTIMIZED DESIGN OF A CYLINDER LINER - A cylinder of an internal combustion engine, in which cylinder liner an oscillating piston is guided on a running surface wherein the cylinder line is fixed vertically by means of a collar between a cylinder housing and a cylinder head. The wet cylinder includes an outer side which deviates from a circular shape and/or a rotationally asymmetrical outer contour of the collar. The cylinder liner is fitted in a positionally oriented manner in a corresponding receptable of the cylinder housing. | 11-06-2014 |
20150122118 | CYLINDER LINER AND PREPARATION METHOD THEREOF - A cylinder liner with a plurality of protrusions on its outside surface and the manufacturing method thereof are disclosed. The protrusions are Ω-shaped, P-shaped or taper-shaped, and the Ω-shaped, P-shaped and taper-shaped protrusions are accounted for 50-99.5%, 0.5-30% and 0-20% of the total number of protrusions, respectively. The density of the protrusions on the outside surface of the cylinder liner is 15-65 per square centimeter. The outer surface of the protrusions of the cylinder liner is curved, and has a large contact area and a concave which can be filled by an aluminum sheath to improve the radial bearing capacity, so as to effectively improve the bite force between the cylinder liner and the outside aluminum sheath and prevent the cylinder liner from breaking away from the cylinder body. | 05-07-2015 |
20160061327 | Cylinder Assembly - A cylinder assembly may include a cylinder end having a cylinder end opening, a cylinder barrel, a piston, a rod, and a shaft. An opening through the piston forms a sleeve passing through a portion of the piston. The rod extends out of the cylinder barrel and is configured to rotate with respect to the cylinder barrel and the cylinder end. An opening in the rod further forms the sleeve passing through an interior portion of the rod. A protruding end of the shaft passes through the cylinder end opening. A portion of the shaft has a cross-sectional shape corresponding to the cross-section of the sleeve. The protruding end of the shaft is free to rotate within the cylinder end opening in response to a rotation of the rod. The shaft is free to slide within the sleeve in response to an extension or retraction of the rod. | 03-03-2016 |