Abstract: The present invention relates to a cartridge for holding liquid, paste-like or powdered compounds and a piston for closing such a cartridge, and a system made up of such a cartridge, comprising a tool (15), wherein the piston comprises a cylindrical or cylindrical tube-like base member that can be placed into a cartridge and moved along the cylindrical longitudinal axis inside a cartridge, wherein at least one sealing lip (12) is provided that seals against a sealing surface running parallel to or at an acute angle with respect to the cylindrical longitudinal axis, wherein the sealing lip is arranged such that by way of a tool that can be accessed from an end side of the piston, the sealing lip can be lifted off the sealing surface when the cartridge is closed by the piston so that air can escape from the cartridge.
Abstract: A valve for controlling a flow of granular material and fluid comprises a body having a first end, a second end, and defining an interior surface. An inlet is formed proximate the first end for receiving the granular material and fluid. An outlet is formed downstream of the inlet for selectively discharging the granular material and fluid. A first member is slideably captured within the body and a resilient member is operationally coupled to the first member. The first member is moveable between an open position at which the granular material and fluid flow through the outlet, and a closed position upstream of the outlet at which the granular material is substantially prevented from flowing through the outlet. The resilient member is moveable between a retracted position and an expanded position at which it is engaged with the interior surface to substantially prevent the fluid from flowing through the outlet.
Abstract: A valve for controlling a flow of granular material and fluid comprises a body having a first end, a second end, and defining an interior surface. An inlet is formed proximate the first end for receiving the granular material and fluid. An outlet is formed downstream of the inlet for selectively discharging the granular material and fluid. A first member is slideably captured within the body and a resilient member is operationally coupled to the first member. The first member is moveable between an open position at which the granular material and fluid flow through the outlet, and a closed position upstream of the outlet at which the granular material is substantially prevented from flowing through the outlet. The resilient member is moveable between a retracted position and an expanded position at which it is engaged with the interior surface to substantially prevent the fluid from flowing through the outlet.
Abstract: A piston has a body with a first circumferentially disposed groove. A first ring is movably disposed within the first groove. The first ring defines an inner circumferential groove. A blocking ring is at least partially located in the groove of the first ring and the groove of the piston. One or more vent passages may connect a first volume in the piston to a second volume outside the piston.
Abstract: A piston assembly is described including a connecting rod and a piston head secured to the connecting rod and in operational communication with the connecting rod. The piston head has a circumferential groove extending inwardly from an exterior surface of the piston head. The piston head further has a compression mechanism aperture disposed proximate the groove. An oil ring expander is disposed generally within the groove. The expander includes a gap between a first expander end and a second expander end. The gap is proximate the compression mechanism aperture. At least one lever arm is in mechanical communication with the connecting rod. The at least one lever arm has a tab disposed between the first expander end and the second expander end.
Type:
Grant
Filed:
July 21, 2006
Date of Patent:
December 9, 2008
Assignee:
Mahle Engine Components USA, Inc.
Inventors:
Joseph C. Hamelink, Jack W. Lewis, David R. Stamy
Abstract: A variable oil ring compression mechanism provides for real-time cyclic variation of piston ring tension in an operating internal combustion engine. A cam is situated in the gap of a piston oil control ring, the cam affixed to a shaft secured to a pivot plate positioned within the body of the piston, wherein the pivot plate is adapted to oscillate in a follower-style rocking motion responsive to the rotary movement of a connecting rod boss positioned in close proximity with the plate. In a preferred form, the cam is situated between ends of an expander ring positioned between oil scrapper rails in the bottom groove of the piston.
Abstract: A pad plunger assembly includes an elongated mandrel having a pair of opposite ends, at least one pad subassembly disposed about the mandrel and extending between the opposite ends thereof, a plurality of annular key ways and annular keys respectively defined on the mandrel and the pad subassembly, the key ways and keys interfitting with one another so as to impede the ability of a fluid to flow along the mandrel beneath the pad subassembly and adjacent to the mandrel and from one to the other of the opposite ends of the mandrel, and elements for securing the pad subassembly on and around the mandrel.
Abstract: The horizontal reciprocating compressor is provided with a cylinder, piston and piston rod connected to the piston. An eccentric ring is mounted eccentrically within the piston and rotatably receives the piston rod. Rotation of the eccentric ring from time to time serves to move the axis of the piston rod vertically relative to the axis of the piston so as to eliminate runout.
Abstract: An internal combustion engine includes a piston mounted for reciprocating motion within a cylinder and sealed with respect thereto. The piston is connected to a crankshaft by means of a connecting rod, pivotal connections being provided between the connecting rod and crankshaft and between the connecting rod and piston. An oil ring is provided in a circumferential groove in the wall of the piston, said oil ring being split so that there is a gap in the ring when it engages the wall of the cylinder. An interconnection is provided between the connecting rod and oil ring by which tilting of the connecting rod upon upward movement of the piston will reduce the gap so that the load applied by the oil ring on the cylinder wall is reduced, the oil ring being permitted to expand against the cylinder wall upon downward movement of the piston.
Abstract: The seal, for use especially in non-lubricated, high-pressure, as compressors, in a one-piece, continuous sleeve which envelopes a reciprocable piston for sealing against the piston, or against the cylinder in which the piston translates. One end of the sleeve effects the sealing engagement, and the other end is spring-loaded to maintain the engagement. During operation of the compressor, or the like, it is the high-pressure gas which urges the seal into sealing engagement.
Type:
Grant
Filed:
September 6, 1988
Date of Patent:
January 2, 1990
Assignee:
Ingersoll-Rand Company
Inventors:
Bernard F. Miller, John A. Sawyer, Wayne F. Wehber
Abstract: A sealing device particularly suitable for sealing pistons of working cylinders and for sealing two machine components which can slide against one another is disclosed. A conventional sealing element consisting of low-friction, but not very elastic material, such as PTFE plastic material, and resting on an elastic support, is used. The cross-section of the sealing element in a direction of the sliding motion is U-shaped and encircles the support. The dimensions of the support and the sealing element are determined such that the support exerts prestress forces on the sealing element which try to bend the rim areas of the sealing element outward against the sliding surface for the sealing element. Consequently, an additional force component, directed toward the sliding surface, results for the pressure force which is exerted on the sealing element by the support and functions as a sealing force.
Abstract: The seal, for use especially in non-lubricated, high-pressure, as compressors, in a one-piece, continuous sleeve which envelopes a reciprocable piston for sealing against the piston, or against the cylinder in which the piston translates. One end of the sleeve effects the sealing engagement, and the other end is spring-loaded to maintain the engagement. During operation of the compressor, or the like, it is the high-pressure gas which urges the seal into sealing engagement.
Type:
Grant
Filed:
March 25, 1992
Date of Patent:
September 7, 1993
Assignee:
Dresser-Rand Company
Inventors:
Bernard F. Miller, John A. Sawyer, Wayne F. Wehber