Patents Examined by Marguerite Macy
  • Patent number: 5479903
    Abstract: In a multicylinder internal combustion engine with cylinder banks arranged in the shape of a V wherein a single cam shaft is supported centrally within the V space between the cylinder banks and push rods are disposed in push rod guides formed alongside the two cylinder banks so as to be operable by the cam shaft for actuating inlet and outlet valves of associated cylinders via rocker arms, fuel injection pumps are supported in mounting openings formed into the cylinder banks along the sides thereof so as to be also operable by the cam shaft for the injection of fuel into the cylinders via injectors mounted to the cylinders, the push rods and the fuel pumps are also arranged in V-shaped rows along the cylinder banks and coolant channels extend along each cylinder bank between the cylinders and the fuel pumps wherein, a cross-sectional plane extending through a particular cylinder, the pump mounting openings, the coolant channels, the push rod guides and the associated cylinder are disposed in a fan-like arran
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: January 2, 1996
    Assignee: Mercedes-Benz AG
    Inventors: Johannes Werner, Klaus-Jurgen Thiele, Emil Bauerle, Walter Kerschbaum, Peter Bauknecht
  • Patent number: 5479888
    Abstract: When viewing in parallel to a cylinder center axis (3), a combustion expanding gas injected from an injection hole (4) is adapted to form a pair of valve recesses (10), (11) located on the opposite sides of an injection axis (12) of the injection hole (4). A pair of valve recesses (10), (11) are formed concavely in a piston top surface (8) so as to be separately disposed on the opposite sides of the injection axis (12) of the injection hole (4). Respective swirl centers (14), (15) of a pair of swirling gas flows (6), (7) are located within the pair of valve recesses (10), (11).
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: January 2, 1996
    Assignee: Kubota Corporation
    Inventors: Yousuke Morimoto, Kiyoshi Hataura, Yasukazu Kamata
  • Patent number: 5479894
    Abstract: In a two-stroke internal combustion engine with an engine block including a crankcase and a cylinder housing receiving pistons which are connected to a crankshaft by crosshead rods with crossheads guided for linear movement with the piston and a connecting rod extending between the crosshead and the crankshaft, wherein the cylinders have walls with inlet and outlet slits disposed above the bottom dead-center position of the piston and providing for communication between the cylinder and inlet and outlet channel structures formed in the cylinder housing around the pistons, the engine block consists of a cylinder housing and a crankcase joined along a dividing plane extending across the engine block below the lowest piston ring when the piston is in its bottom position and the cylinder housing includes channel structures which are open toward the dividing plane and have walls extending inwardly and have inner surfaces in engagement with the piston for guiding said piston and to form, with the piston skirt, the
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: January 2, 1996
    Assignee: Mercedes-Benz AG
    Inventors: Friedrich Noltemeyer, Alfred Hoppe, Jurgen Munzenmaier, Friedrich Rusch, Gunter Karl
  • Patent number: 5479907
    Abstract: The combination apparatus, preseparator, vacuum regulator and check valve silences and filters air flow and separates air-contaminant mixtures. The combination apparatus comprises an annular housing having an outer wall and a channel defining a central axis. The channel has a primary gas inlet coupled to an air filter, a primary gas outlet coupled to an engine induction system, and a channel wall therebetween. A secondary inlet port passes through the outer wall and a secondary inlet port defines an opening in the channel. A baffle is axially disposed within the housing defining a first and second flow passageway. Second baffles are disposed within the first and second passageways to effect serpentine flow through each flow passageway and filter material is disposed within each flow passageway. A preseparator is coupled between the secondary inlet and an engine breather and has an annular housing with preseperator baffles disposed therein for effecting serpentine flow therethrough.
    Type: Grant
    Filed: July 12, 1994
    Date of Patent: January 2, 1996
    Inventor: Robert A. Walker, Jr.
  • Patent number: 5477821
    Abstract: A piston for an internal combustion engine. The piston has upper and lower compression rings and a recess between the two which exposes a greater proportion of the ring end gap for the lower compression ring. As a result, the space between the rings and below the lower compression ring provides a capacitance volume to minimize top ring reversal.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: December 26, 1995
    Assignee: Cummins Engine Company, Inc.
    Inventor: Paul M. Chapple
  • Patent number: 5476072
    Abstract: A supplemental cylinder head assembly for operation of an engine in a homogeneous charge compression ignition combustion mode. The supplemental cylinder head assembly provides a movable accumulator piston position above the main combustion chamber. The accumulator piston is upwardly responsive to the combustion event in the main combustion chamber and downwardly to a preload force. An engine adapted to receive the supplemental cylinder head assembly is capable of efficiently operating on any fuel in the octane range of zero to 130.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 19, 1995
    Inventor: Evan Guy
  • Patent number: 5474039
    Abstract: An inlet tube (13) for interconnecting a carbureter (11) and an inlet pipe socket (12) of an internal combustion engine, especially in a motor saw, is made of a flexible material and provided with a bellows (16) for allowing relative movement between the carbureter and the engine. In order to prevent accumulation of fuel in the bellows, a telescopically slidable tube piece (17) is provided radially inside the bellows. The tube piece has an outer sealing surface cooperating with a complementary, surrounding sealing surface of the inlet pipe socket (12) in order to isolate the bellows from the interior of the inlet tube. The bellows is arranged adjacent to the intake pipe socket (12) in order to evaporate any liquid fuel accumulated in the bellows by heat supplied by said intake pipe socket.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: December 12, 1995
    Assignee: Aktiebolaget Electrolux
    Inventor: Fridolf A. G. Doragrip
  • Patent number: 5471960
    Abstract: A cylinder for a two-cycle internal combustion engine is disclosed which enables reduction of HC in exhaust gas to be effectively attained without any complicated modification. A pair of scavenging ports 20, 20 are oppositely formed which employ loop scavenging mode towards the direction opposite to an exhaust port 16 symmetrically with respect to the longitudinal section F bisecting the exhaust port 16. A pocket portion 20c is formed at the innermost end of the inner surface 20a of the end portion closer to the exhaust port 16 of each of the scavenging ports 20, 20 to form a prolonged wall portion 20d extending along the inner wall surface 5 of the cylinder 1 in the direction apart from the exhaust port 16.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: December 5, 1995
    Assignee: Kioritz Corporation
    Inventors: Yoshiaki Nagao, Kazuhiro Tsutsui
  • Patent number: 5471964
    Abstract: A fuel treatment apparatus and process is provided utilizing a blending head thereon defining a plurality of passages therein including a first passage and a second passage connected by a blending passage which includes a thermostat for blocking off the blending passage. The blending head functions to direct fuel into a fuel treatment apparatus having a settling chamber with a fuel introducing conduit passing through the top of the chamber and extending to a lower portion of the chamber to define a fuel inlet in the lower portion of the chamber. A buoyant valve is located within the conduit to permit fuel introduction during normal operation but to close off the conduit during periods of non-operation thus closing off fluid communication between the fuel treatment apparatus and the fuel tank. A fuel outlet is provided to remove the fuel after the treatment. A recess in the bottom of the chamber has a drain in the bottom thereof for the removal of moisture from the bottom of the chamber.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: December 5, 1995
    Inventor: Erwin E. Hurner
  • Patent number: 5469821
    Abstract: A cylinder block composed of a hypoeutectic aluminum alloy has cylinder liners of the same material. The cylinder liners contain SiC particles for wear resistance.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: November 28, 1995
    Assignee: EB Bruhl Aluminiumtechnik GmbH
    Inventor: Rolf Gosch
  • Patent number: 5465702
    Abstract: An improved, reciprocating internal combustion engine is disclosed herein. This engine consists of multiple cylinders, each closed by a cylinder head and containing a piston which is connected to a power output shaft. Each cylinder has means for the intake and exhaust of working fluid. It also contains a movable, thermal regenerator, an alternating flow heat exchanger, and means to move this regenerator. Finally, means are provided for the introduction of fuel into the cylinder. The regenerated, internal combustion, reciprocating engine and several variations on it disclosed herein are substantially different from prior art and provide critical improvements over that prior art. These improvements include different and superior heating and cooling strokes.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: November 14, 1995
    Inventor: Allan J. Ferrenberg
  • Patent number: 5462027
    Abstract: A number of embodiments of cylinder head and intake port arrangements for multiple valve, internal combustion engines particularly those having three or more intake valves. The configuration promotes turbulence in the combustion chamber by inducing a tumble action even from the center intake valve seat. In addition, each of the valve seats and its associated flow passages are configured so as to provide optimum tuning for different engine speeds so as to improve the torque of the engine throughout its entire speed and load ranges and to provide good breathing efficiency throughout all engine speeds. Various porting and throttle and fuel injection systems are shown wherein siamesed intake passages are formed for at least two of the valve seats.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: October 31, 1995
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Tateo Aoyama
  • Patent number: 5460144
    Abstract: Fluid fuel traveling through a fuel line is ionized by the action of infrared rays emitted from a ceramic material disposed within two cases containing multiple compartments through which the fuel line extends. Both cases contain pairs of permanent magnets which establish magnetic flux patterns tending to break-up the fuel into small particles. A resonator is mounted in a compartment of one case and a resonance vibrator is mounted opposite said resonator in a compartment of the other case. Two layers of a material emitting infrared rays are disposed on opposite sides of the fuel line with an additional magnetic member being disposed between said layers.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: October 24, 1995
    Assignee: Jong H. Park
    Inventors: Jong H. Park, Young H. Choi
  • Patent number: 5458072
    Abstract: The system (10) for collecting and disposing of contaminated waste products such as medical sharps and other medical wastes includes a housing (11) and its telescopic cover (9) which are fabricated of biodegradable and combustible material such as natural cellulose and non-natural cellulose. An absorbent biodegradable and combustible absorption package (30) or insert (35) can be placed in the bottom of the holding chamber (12) for absorbing any liquids emitted from the sharps and other wastes, and for enhancing the combustion of the medical sharps and other wastes when the housing is placed in a furnace. When the housing is burned it evolves no more than trace levels of sulfur or chlorine and yields substantially only biodegradable ash.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: October 17, 1995
    Inventors: David W. Hughes, L. Andrew Withers
  • Patent number: 5458099
    Abstract: A cylinder head is composed of a basic housing resting on a cylinder block, said housing having gas exchange channels and valves, a bearing housing supporting camshafts and cup tappets, and a cylinder head cover. This cover is made integral with the upper parts of the camshaft bearings. The arrangement has a single separating plane, at which both the basic housing with elevated outside walls and the bearing housing and the cylinder head cover abut. This arrangement has high rigidity and is easy to assemble.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: October 17, 1995
    Assignee: Dr. Ing. h.c.F. Porsche AG
    Inventors: Gerhard Koller, Hans-Joachim Esch, Winfried Distelrath, Roland Hauf
  • Patent number: 5456219
    Abstract: An apparatus and method is provided for a dual compression and dual expansion internal combustion engine (8) that is compact, efficient, and has low combustion noise and emissions. The subject engine (8) includes a low pressure piston assembly (56) reciprocally disposed in an operating chamber (22) defined in a housing (10). A pair of opposed high pressure piston assemblies (58) and (60) are directly mounted on a pair of geared together, counter rotating, crankshafts (52) and (54) and reciprocally disposed in bores (178) and (186) of the low pressure piston assembly (56). The disposition of the second and third piston assemblies (58) and (60) within their respective bores (178) and (186) defines a combustion chamber (254). An intake chamber (144) for compression of inducted air and an exhaust chamber (146) for expansion of exhaust gas are defined in the operating chamber (22) between the low pressure piston assembly (56) and the housing (10).
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 10, 1995
    Assignee: Caterpillar Inc.
    Inventor: John M. Clarke
  • Patent number: 5456239
    Abstract: A crankcase ventilation system for a vehicle includes an arrangement of flow conduits and control valves which cooperate with a two-chamber accumulator and with various vehicle components to route crankcase gases to the intake manifold. The primary vehicle components include a compressor, an aftercooler positioned downstream from the compressor, and an engine having an intake manifold and a crankcase. One chamber of the accumulator is coupled by one conduit to the inlet side of the compressor and by a second conduit to the outlet side of the compressor. These two conduits are controlled by a dual valve arrangement. The other chamber of the accumulator is connected by one conduit to the crankcase and by a separate conduit to the intake manifold. Each conduit includes a control valve. The system operates on pressure differences existing between these various components. The cycle begins by opening the conduit which is connected to the inlet side of the compressor.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: October 10, 1995
    Assignee: Cummins Engine Company, Inc.
    Inventors: Gregory H. Henderson, David M. Ruch, Brian W. Zellmer, Chad L. Kelly, Philip C. Kreimer
  • Patent number: 5452669
    Abstract: Incineration apparatus for incinerating a particulate material comprises a furnace housing (2), feeding means (7) for feeding material to be incinerated into said housing (2), and gas supply means (6a-c) for introducing a gas into the material in a lower part of said housing (2) so as to form a fluidised bed (8). Said gas supply means (6a-c) is spaced from the walls of said furnace housing (2) such that said walls are insulated from the fluidised bed (8) by an insulating layer of particulate material not in a fluidised state.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: September 26, 1995
    Assignee: Richards Engineering Limited
    Inventor: Ian A. Bailey
  • Patent number: 5452686
    Abstract: Waste heat boiler comprising within a cylindrical shell a plurality of heat exchanging tubes having an inlet end and outlet end;attached to the shell, means for introducing water on shellside of the tubes;means for introducing a hot process stream into the inlet end of the tubes and passing the gas stream through the tubes in indirect heat exchange with the water on the shellside of the tubes to produce water/steam and to cool the introduced process stream;means for withdrawing produced water/steam, and means for withdrawing the cooled gas stream;wherein the tubes are arranged in at least two tube bundles each of which is provided with means for adjusting flow distribution and flow rate of the hot gas stream between the tube bundles to control the production of steam and the cooling of the process stream.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: September 26, 1995
    Assignee: Haldor Topsoe A/S
    Inventor: Henrik O. Stahl
  • Patent number: 5452691
    Abstract: A cylinder liner support arrangement in an internal combustion engine, preferably in which the cylinder block and cylinder head are integrated in a common monobloc element and the cylinder barrels for the engine pistons have cylinder liners which have their upper portions inserted in cylinder bores in the cylinder block. The lower portions of the cylinder liners are accommodated in cylindrical apertures in a common cylinder liner support which may be made as a single element and is removably secured to a lower surface of the cylinder block. The cylinder liner support includes a number (corresponding to the number of cylinders of the engine) of mutually connected supporting sleeves which are disposed in-line, delineate the cylindrical apertures and have their sleeve walls surrounding the lower portions of the cylinder liners and providing them with lateral support. The cylinder liner support includes a mounting plate from one side of which the supporting sleeves protrude.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: September 26, 1995
    Assignee: Saab Automobile Aktiebolag
    Inventors: Per-Inge Nilsson, Eine Wallin