Patents Represented by Attorney Arthur N. Trausch, III
  • Patent number: 4917569
    Abstract: A containment system for a radial flow turbine assembly includes a housing assembly, and a turbine rotor journalled for rotation about an axis and having a hub portion and a generally tapering disc portion extending radially outward from the hub portion. An annular nozzle assembly normally secured in the housing assembly against rotation forms a tapered rotor chamber within which the rotor rotates with minimum axial and radial clearance between the rotor and the chamber. A plurality of support struts extend axially inward from the nozzle assembly to a minimal axial and radial clearance with the hub portion of the rotor and forms a first stage of containment. The rotor must first break through the nozzle struts and separate the nozzle assembly. A rotatable nozzle assembly then absorbs some of the force by rotating in the housing assembly and containment ring. An armored containment ring stops the fragments that escape the nozzle assembly and finally, an outer housing provides still further containment.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: April 17, 1990
    Assignee: Ingersoll-Rand Company
    Inventor: Robert R. Kimberlin
  • Patent number: 4833830
    Abstract: A hatch closure assembly having high security includes a hatch locking spring and lever which is actuated by an adjustable screw. The actuating screw can be turned only by a special wrench.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: May 30, 1989
    Assignee: Schlage Lock Company
    Inventors: Edward T. Prell, Stephen M. Jacobs
  • Patent number: 4577661
    Abstract: An ultra fast-acting shut-off valve utilizing a slotted spool in registry with a slotted sleeve which provides full opening with an extremely short valve throw. The valve may be operated by any suitable actuator. An electric solenoid is provided in the preferred embodiment described, making it compatible with electronic micro-processor control systems.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: March 25, 1986
    Assignee: Ingersoll-Rand Company
    Inventors: David R. Melrose, Mario A. Russo
  • Patent number: 4527802
    Abstract: A magnetic/centrifugal-fluid seal is characterized by a common region serving as both the magnetic gap for the magnetic seal and a fluid-receiving pool for the centrifugal seal. A magnetically permeable annular rotating member extends radially into an annular space defined by a magnetically permeable stationary member to form an annular space of U-shaped cross-section between the members. A closed magnetic circuit is established through the members and the space, which space thereby acts as a magnetic gap to retain the fluid therein when the rotating member is at rest or rotated at low speeds. The common region also retains the fluid when it is centrifugally pressurized during high speed rotation of the rotating member. The fluid remains substantially in the same location during speed-up and slow-down, thereby avoiding compromise of the seal during speed transitions.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: July 9, 1985
    Assignee: Mechanical Technology Incorporated
    Inventors: Donald F. Wilcock, Stanley Gray
  • Patent number: 4522030
    Abstract: A multi-cylinder hot gas engine having an equal angle, V-shaped engine block in which two banks of parallel, equal length, equally sized cylinders are formed together with annular regenerator/cooler units surrounding each cylinder, and wherein the pistons are connected to a single crankshaft. The hot gas engine further includes an annular heater head disposed around a central circular combustor volume having a new balanced-flow hot-working-fluid manifold assembly that provides optimum balanced flow of the working fluid through the heater head working fluid passageways which are connected between each of the cylinders and their respective associated annular regenerator units. This balanced flow provides even heater head temperatures and, therefore, maximum average working fluid temperature for best operating efficiency with the use of a single crankshaft V-shaped engine block.
    Type: Grant
    Filed: May 1, 1984
    Date of Patent: June 11, 1985
    Assignee: Mechanical Technology Incorporated
    Inventor: John A. Corey
  • Patent number: 4488813
    Abstract: This invention provides for the use of two similar fiber optic probes set at a fixed position differential relative to each other in order that a calibration correction signal can be obtained which may be used to create a common output signal having a gap calibration which is independent of surface reflectance.
    Type: Grant
    Filed: April 29, 1982
    Date of Patent: December 18, 1984
    Assignee: Mechanical Technology Incorporated
    Inventors: Curtis Kissinger, Richard Dorman
  • Patent number: 4487020
    Abstract: A power control arrangement for a Stirling engine includes a sleeve mounted in each cylinder for axial movement and a port in the sleeve leading to a dead space. The port is covered by the piston at a position that is determined by the piston position and the axial adjustment of the sleeve. The compression phase of the Stirling cycle for that piston begins when the port is covered, so the position of the sleeve is used to set the Stirling engine power level.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: December 11, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: John J. Dineen
  • Patent number: 4485678
    Abstract: A system for rotor diagnostic and trim balancing which includes vibration and rotational sensors coupled to a processor providing outputs thereto whereby the processor is capable of generating a diagnostic output listing the basis and origin of the vibration based upon pre-established standards and if possible effect trim balancing of the rotor.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: December 4, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: Frank Fanuele
  • Patent number: 4483143
    Abstract: A piston and cylinder for a Stirling engine and the like having top and bottom meshing or nesting finned conical surfaces to provide large surface areas in close proximity to the working gas for good thermal (addition and subtraction of heat) exchange to the working gas and elimination of the usual heater and cooler dead volume. The piston fins at the hot end of the cylinder are perforated to permit the gas to pass into the piston interior and through a regenerator contained therein.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: November 20, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: John A. Corey
  • Patent number: 4478553
    Abstract: A compression intensified thermodynamic gas process that includes a compressor rotor having a series of passage forming blades between which a process gas is conducted during compression. A coolant metering system is contained within the rotor structure which is arranged to introduce a liquid coolant directly into the gas flow as the gas is being compressed. Coolant nozzles are strategically positioned throughout the rotor so that coolant droplets that are introduced into the flow stream will pass freely out of the rotor without impacting the rotor blades.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: October 23, 1984
    Assignee: Mechanical Technology Incorporated
    Inventors: Herman M. Leibowitz, Somayajulu D. S. R. Karamchetty
  • Patent number: 4476681
    Abstract: A four piston hydraulic pump driven by a four cylinder free-piston Stirling engine has four stepped pistons operating out of phase in pairs. The hydraulic fluid pumped between the hydraulic cylinder can be tapped for hydraulic power. The stepped pistons give the option of utilizing low flow/high pressure, or high flow/low pressure. The non-utilized flow ensures that the timing between pistons will always remain correct. Since the arrangement is symmetrical, it remains balanced.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: October 16, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: John J. Dineen, deceased
  • Patent number: 4465384
    Abstract: A hydrodynamic fluid film bearing having a series of axially aligned foil bearing modules which act in concert to extend the load carrying capability of the bearing assembly while providing whirl free operation.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: August 14, 1984
    Assignee: Mechanical Technology Incorporated
    Inventors: Hooshang Heshmat, Wilbur Shapiro, Stanley Gray
  • Patent number: 4458489
    Abstract: A new and improved resonant free-piston Stirling engine and method of operation employing a novel virtual rod displacer is described. A rod is secured to and reciprocally moves with the displacer within the Stirling engine and has a rod piston area formed on the end of the rod remote from the displacer with the rod piston area also being subjected to the working gas periodic pressure wave. Suitable support bearings are designed within the Stirling engine housing for reciprocatingly supporting the displacer and rod assembly within the Stirling engine with a set of opposed acting gas springs being provided to act on the displacer end and rod assembly area end of the displacer and rod assembly.
    Type: Grant
    Filed: July 27, 1982
    Date of Patent: July 10, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: Michael M. Walsh
  • Patent number: 4454720
    Abstract: An open Rankine cycle heat pump that utilizes a multistage compressor having interstage desuperheating wherein process fluid in the form of water drawn from a waste heat producing process is used as the working fluid in the heat pump thereby eliminating the need for heat exchangers at the conventional evaporator and condensor locations. Heated return water drawn from the process is flashed to a vapor and the vapors passed through the compressor to provide thermal energy that is used in compatible process related equipment.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: June 19, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: Herman M. Leibowitz
  • Patent number: 4455026
    Abstract: A combined magnetic/centrifugal seal for a rotating shaft rotatably journalled within a housing. The rotating shaft has a generally circular cross section and at least one radially extending generally Vee-shaped cross section circumferential portion formed about its periphery. A plurality of radially extending circumferential teeth are concentrically arrayed around the periphery of the rotating shaft in parallel relationship to the Vee-shaped circumferential portion on the rotating shaft on at least one of its sides and spaced closely adjacent thereto. The housing has a complementary generally Vee-shaped cross section within which the Vee-shaped circumferential portion of the rotating shaft rides and in conjunction with the Vee-shaped cross section portion defines a space within which the concentrically arrayed circumferential teeth extend.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: June 19, 1984
    Assignee: Mechanical Technology Incorporated
    Inventors: Oscar Pinkus, Donald F. Wilcock
  • Patent number: 4452042
    Abstract: In a piston rod seal of the type comprising a gland through which the piston rod is passed the piston is provided with a sleeve surrounding the piston rod and extending axially so as to axially partly overlap the gland when the piston is in its bottom dead center position.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 5, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: Stefan Lindskoug
  • Patent number: 4450685
    Abstract: A compressor, pump, or alternator apparatus is designed for use with a resonant free piston Stirling engine so as to isolate apparatus fluid from the periodically pressurized working fluid of the Stirling engine. The apparatus housing has a first side closed by a power coupling flexible diaphragm (the engine working member) and a second side closed by a flexible diaphragm gas spring. A reciprocally movable piston is disposed in a transverse cylinder in the housing and moves substantially at right angles relative to the flexible diaphragms. An incompressible fluid fills the housing which is divided into two separate chambers by suitable ports. One chamber provides fluid coupling between the power diaphragm of the RFPSE and the piston and the second chamber provides fluid coupling between the gas spring diaphragm and the opposite side of the piston. The working members of a gas compressor, pump, or alternator are driven by the piston.
    Type: Grant
    Filed: June 2, 1982
    Date of Patent: May 29, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: John A. Corey
  • Patent number: 4448424
    Abstract: A lubricated piston rod seal which inhibits gas leaking from a high pressure chamber on one side of the seal to a low pressure chamber on the other side of the seal. A liquid is supplied to the surface of the piston rod on the low pressure side of the seal. This liquid acts as lubricant for the seal and provides cooling for the rod. The seal, which can be a plastic, elastomer or other material with low elastic modulus, is designed to positively pump lubricant through the piston rod/seal interface in both directions when the piston rod is reciprocating. The capacity of the seal to pump lubricant from the low pressure side to the high pressure side is less than its capacity to pump lubricant from the high pressure side to the low pressure side which ensures that there is zero net flow of lubricant to the high pressure side of the seal. The film of lubricant between the seal and the rod minimizes any sliding contact and prevents the leakage of gas.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: May 15, 1984
    Assignee: Mechanical Technology Incorporated
    Inventor: William D. Ernst
  • Patent number: 4440402
    Abstract: A ferrofin magnetic-fluid seal for hermetically sealing the space between a portion of a rotating member of magnetically permeable material and a portion of a close-fitting, spaced-apart stationary member also fabricated from magnetically permeable material and comprising a part of a housing for journalling the rotating member. The ferrofin magnetic-fluid seal is comprised of a plurality of concentric, fin-like projections of magnetically permeable material formed on each of the rotating member and the stationary member in spaced-apart opposing relation to define a plurality of magnetic gap regions. The magnetic ferrofluid is disposed within the magnetic gap regions. A magnetic field producing means is magnetically coupled in closed magnetic circuit relationship with at least the portions of the rotating and stationary members, the opposed fin-like projections and the magnetic ferrofluid trapped in the magnetic gaps defined between the opposing ends of the fin-like projections.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: April 3, 1984
    Assignee: Mechanical Technology Incorporated
    Inventors: Oscar Pinkus, Jed A. Walowit
  • Patent number: D313606
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: January 8, 1991
    Assignee: Abbott Laboratories
    Inventor: Michael J. Roth