Patents Assigned to Copeland Corporation
  • Scroll-compressor having flat driving surfaces
    Patent number: 5295813
    Abstract: A scroll machine has a drive that incorporates radial compliance. The radial compliance is achieved by having the crank pin drive a drive bushing via a flat surface on the crank pin which slidably engages a flat bearing insert disposed in the wall of a bore located in the drive bushing. The bore in the drive bushing is slightly oval in cross-sectional shape to permit relative sliding movement between the crank pin and the drive bushing.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: March 22, 1994
    Assignee: Copeland Corporation
    Inventors: Jean-Luc Caillat, Roger C. Weatherston, James W. Bush
  • Tandem compressor mounting system
    Patent number: 5277554
    Abstract: A tandem compressor mounting system has a set of four elastomeric grommets for mounting each of the compressors to a pair of common rails. Each of the elastomeric grommets is secured to a mounting plate located on each of the two compressors and are disposed between the mounting plates and the common rails. Each of the two sets of elastomeric grommets are made from 65 durometer neoprene. A third set of four elastomeric grommets, two for each of the common rails, is disposed between the common rails and a generally horizontal mounting surface. Each of the third set of elastomeric grommets is made from 40 durometer neoprene.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: January 11, 1994
    Assignee: Copeland Corporation
    Inventor: John P. Elson
  • Compressor assembly with staked shell
    Patent number: 5267844
    Abstract: A means for attaching the bearing housing to an outer shell is disclosed. The outer shell is plastically deformed into a plurality of apertures formed into the bearing housing. The deformation of the shell is such that material is displaced into the aperture of the bearing housing member without penetrating through the wall of the shell, thus maintaining the integrity of the shell. The shape of the displaced material of the shell is such that a generally cylindrical load bearing surface having a sharp corner is created which is capable of withstanding both axially and circumferentially directed forces of substantial magnitude.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: December 7, 1993
    Assignee: Copeland Corporation
    Inventors: Walter T. Grassbaugh, Dilip S. Sathe
  • Fluid compressor with liquid separating baffle overlying the inlet port
    Patent number: 5219281
    Abstract: There is disclosed a scroll-type machine particularly suited for use as a refrigeration compressor and incorporating an improved baffle arrangement to provide a directed suction inlet as well as to separate oil entrained in the returning refrigerant and return same to the lubricant sump in the lower portion of the shell.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: June 15, 1993
    Assignee: Copeland Corporation
    Inventors: Jean-Luc M. Caillat, Roger C. Weatherston, James W. Bush
  • Refrigerant compressor discharge muffler
    Patent number: 5205719
    Abstract: A refrigerant compressor discharge muffler which operates on the principle of a closed chamber resonator is disclosed. The muffler includes a generally J-shaped tube and an outer shell adapted to be threadably affixed to the head of a motor-compressor unit. The J-shaped tube is partially disposed within the outer shell and has a plurality of arrangements of apertures extending through the wall of the tube interconnecting the internal passage of the tube with a chamber defined by the outer shell. The spacing and size of the apertures are determined by a relationship to a frequency desiring to be attenuated.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: April 27, 1993
    Assignee: Copeland Corporation
    Inventors: Austin S. Childs, Hubert Bukac, Simon Y. Wang
  • Scroll-type machine having a lubricated drive bushing
    Patent number: 5197868
    Abstract: There is disclosed a scroll-type machine particularly suited for use as a refrigerant compressor and incorporating an improved lubrication system for the drive.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: March 30, 1993
    Assignee: Copeland Corporation
    Inventors: Jean-Luc M. Caillat, Roger C. Weatherston, James W. Bush
  • Vented compressor lubrication system
    Patent number: 5176506
    Abstract: An improved lubrication system for a refrigeration compressor is disclosed which lubrication system incorporates filtering arrangement for filtering lubricant supplied to a two stage lubricant pump and unique venting arrangement for venting gaseous refrigerant entrained within the lubricant. The two stage pump incorporates a vent passage in the first stage portion thereof which aids in avoiding a possible interruption of lubricant flow due to gaseous refrigerant within the first stage. A second radially extending restricted vent passage is provided in the drive shaft intermediate the ends thereof which is also designed to vent gaseous refrigerant while resisting the flow of lubricant therethrough so as to avoid priming thereof which could enable the passage to begin pumping lubricant.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: January 5, 1993
    Assignee: Copeland Corporation
    Inventor: Stephen M. Siebel
  • Method of assembling a refrigeration compressor
    Patent number: 5170555
    Abstract: A refrigeration compressor incorporating an improved arrangement and method for securing the motor cover to the motor stator is disclosed which arrangement and method also greatly facilitate the setting of the air gap between the stator and rotor.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: December 15, 1992
    Assignee: Copeland Corporation
    Inventor: James M. Brown
  • Scroll machine with floating seal
    Patent number: 5156539
    Abstract: A scroll machine utilizing working fluid under pressure to enhance axial sealing, including several embodiments of a multi-function floating seal to isolate the axial biasing fluid, and provide vacuum protection and a degree of high pressure ratio protection.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: October 20, 1992
    Assignee: Copeland Corporation
    Inventors: Gary J. Anderson, James W. Bush
  • Sound attenuation chamber
    Patent number: 5151018
    Abstract: There is disclosed an improved two-piece enclosure for a refrigerant compressor which is very simple in design and which effectively attenuates the sound produced by that compressor and, at the same time, requires a minimum amount of additional space and provides easy access to the compressor for service and the like. Two embodiments are shown, one with sound insulation on the walls of the container and another with sound insulation on the compressor.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: September 29, 1992
    Assignee: Copeland Corporation
    Inventors: Harry B. Clendenin, James F. Fogt
  • Scroll compressor discharge valve
    Patent number: 5141420
    Abstract: A scroll type hermetic compressor is disclosed which incorporates an improved disc type check valve in the discharge conduit exiting from the compressor shell. The check valve operates to prevent return of high pressure refrigerant which may cause reverse movement of the orbiting scroll upon shut down of the compressor.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: August 25, 1992
    Assignee: Copeland Corporation
    Inventor: Koman B. Nambiar
  • Scroll machine with overheating protection
    Patent number: 5141407
    Abstract: A thermally responsive valve arrangement for scroll motor-compressor high temperature protection, which causes a high-side to low-side leak when excessive discharge gas temperatures are encountered, thereby causing the motor protector to trip and deenergize to motor. A unique valve per se is also disclosed.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: August 25, 1992
    Assignee: Copeland Corporation
    Inventors: Jeffery D. Ramsey, Jean-Luc Caillat, Sunil S. Kulkarni
  • Suction muffler
    Patent number: 5129793
    Abstract: A refrigeration compressor incorporating an improved suction muffler is disclosed. The suction muffler provides dual sound attenuating chambers within a single housing, which housing is secured to the suction inlet conduit extending between the motor cover and suction inlet for the compressor. Integrally formed openings in the sidewall of the conduit provide communication with each of the two chambers and the respective chambers may be tuned to attenuate different specific frequencies. Internal integrally formed baffles within each of the chambers serve to eliminate standing waves within the chambers as well as adding stiffness to the muffler.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: July 14, 1992
    Assignee: Copeland Corporation
    Inventors: Jaroslav Blass, Gary A. Holthaus, Hubert Bukac
  • Scroll-type machine having an inlet port baffle
    Patent number: 5114322
    Abstract: There is disclosed a scroll-type machine particularly suited for use as a refrigeration compressor and incorporating an improved baffle arrangement to provide a directed suction inlet as well as to separate oil entrained in the returning refrigerant and return same to the lubricant sump in the lower portion of the shell.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: May 19, 1992
    Assignee: Copeland Corporation
    Inventors: Jean-Luc M. Caillat, Roger C. Weatherston, James W. Bush
  • Discharge muffler and method
    Patent number: 5101931
    Abstract: A compressor discharge gas muffler comprising a single expansion chamber and an impedence tube for attenuation the fundamental low frequency discharge gas pulses, and a side outlet positioned to attenuate higher frequencies. A method of attenuation is also disclosed.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: April 7, 1992
    Assignee: Copeland Corporation
    Inventors: Jaroslav Blass, Hubert Bukac
  • Non-orbiting scroll mounting arrangements for a scroll machine
    Patent number: 5102316
    Abstract: A scroll type machine is disclosed which incorporates an improved mounting arrangement for the non-orbiting scroll member which mounting arrangement greatly facilitates manufacturing and assembly, effectively prevents radial displacement of the non-orbiting scroll member, and offers the advantages of axial compliance. In one embodiment,the non-orbiting scroll is axially movably secured to a bearing housing by means of a plurality of bolts of bolts and sleeves. In another embodiment a rigid annular ring serves to axially movably secure the non-orbiting scroll to the bearing housing while in a third embodiment a stamped ring is secured to both the non-orbiting scroll and the bearing housing.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: April 7, 1992
    Assignee: Copeland Corporation
    Inventors: Jean-Luc Caillat, John P. Elson, Gary J. Anderson, Kenneth J. Monnier, James F. Fogt
  • Crankcase oil separator
    Patent number: 5090873
    Abstract: In a refrigeration motor compressor of the hermetic type containing an electric motor compartment, and a crankcase compartment, an oil separator installed in the crankcase arranged to prevent oil splash from entering the system. The oil separator includes a generally nautilus shell-shaped structure, an elongated tubular structure, and a check valve assembly for controlling flow. The shell-shaped structure has cross baffles for controlling flow characteristics and a pin for centering the check valve assembly. The check valve assembly includes a helical spring with one end positioned in a retainer in the tubular structure. The other end of the spring fits around the pin and abuts an orifice disk in the shell-shaped structure.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: February 25, 1992
    Assignee: Copeland Corporation
    Inventor: Gary K. Fain
  • Compressor with liquid injection
    Patent number: 5076067
    Abstract: A refrigeration system incorporating a scroll type compressor is disclosed which includes an injection system for injecting liquid refrigerant into the suction inlet opening of the compressor in response to excessive discharge gas temperature. A temperature sensor assembly is located within a well formed in the discharge chamber and serves to control actuation of the liquid injection system. In one embodiment the sensor assembly incorporates a pair of thermostats, one to control liquid injection and one to shut down the compressor in the event of continued overheating. In another embodiment a single thermostat having two tip temperatures is utilized. In a third embodiment a temperature sensing transducer is utilized in combination with a microprocessor.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: December 31, 1991
    Assignee: Copeland Corporation
    Inventors: Werner H. Prenger, Stephen M. Seibel
  • Compressor valving
    Patent number: 5073146
    Abstract: A refrigeration compressor is disclosed which incorporates an improved valve plate assembly having selected portions thereof bowed outwardly to form discrete raised surface portions thereon. These raised surface portions serve to initially increase the clamping force on the gasket means disposed between the valve plate and head or compressor housing to thereby insure a fluid tight seal is maintained during operation of the compressor. Further the valve plate assembly incorporates dual suction valves oriented in side by side relationship and secured to the valve plate at opposite ends. This arrangement offers improved gas flow to the compression chamber by substantially reducing competition between adjacent valves.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: December 17, 1991
    Assignee: Copeland Corporation
    Inventor: Norman G. Beck
  • Refrigeration compressor
    Patent number: RE34297
    Abstract: A refrigeration motor compressor assembly has a housing including a lubricant sump in the bottom thereof into which the lower end of the drive shaft and associated rotor extend. A shield is provided which is positioned by the drive shaft and extends above the oil level in the sump in surrounding spaced relationship to the lower end of the rotor. As the rotor rotates within the shield, lubricant contained therein is thrown out of the surrounding shield and a close fit between the shield and the shaft restricts return flow of lubricant into the area occupied by the rotating rotor.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: June 29, 1993
    Assignee: Copeland Corporation
    Inventor: John P. Elson