US3876339A - Reciprocating piston gas compressor - Google Patents
Reciprocating piston gas compressor Download PDFInfo
- Publication number
- US3876339A US3876339A US385882A US38588273A US3876339A US 3876339 A US3876339 A US 3876339A US 385882 A US385882 A US 385882A US 38588273 A US38588273 A US 38588273A US 3876339 A US3876339 A US 3876339A
- Authority
- US
- United States
- Prior art keywords
- housing
- intake
- cylinder block
- inlet
- valving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/902—Hermetically sealed motor pump unit
Definitions
- ABSTRACT A refrigeration gas compressor including an upright hermetically sealed housing having a generally elliptical transverse cross section, a cylinder block mounted in a lower portion of the housing, an electric motor mounted in an upper portion of the housing.
- a centrally disposed drive shaft rotatable by the motor and including eccentric portions for reciprocating pistons in the cylinder block along the major axis of the elliptical cross section of the housing, a manifold block mounted on the cylinder block adjacent the outer end of the cylinders therein, an inlet chamber in the manifold block communicating with the cylinders through intake valving, an outlet chamber in the manifold block communicating with the cylinders through outlet valving, an outlet muffler chamber in the manifold block having restricted communication with the outlet chamber, an intake muffler adjacent the top of the motor and inlet tubing extending along the opposite side of the motor from the manifold block and c0mmunicating with the intake chamber.
- the cylinder block includes a plurality of cylinders disposed at one side of the longitudinal axis of the drive motor, in vertically spaced radially aligned relationship so that the discharge from both of the cylinders is collected in a single discharge chamber at one side of the motor and cylinder block along the major axis of the elliptical cross section of the housing.
- an intake muffler is located at the top of the motor remote from the cylinder block, and a plurality of intake tubes extend from the intake muffler to the cylinder where a transverse passage communicates the tubes with the intake chamber in the manifold block.
- the manifold block extends upwardly alongside the motor at the opposite side from the intake tubes and includes a plurality of discharge muffler chambers communicating with each other through restricted passages.
- the novel arrangement provides a compact construction in which the elliptical cross sectional configuration of the housing closely surrounds the cylinder block, the manifold block and the intake tubing. while the intake tubing is separated from the discharge path, and muffling is associated with both the intake and the discharge valving.
- FIG. 1 is a vertical sectional view taken through the major axis of the generally elliptical housing
- FIG. 2 is a transverse cross-sectional view taken at about the line 2-2 of FIG. 1;
- FIG. 3 is a vertical sectional view taken at about the line 3-3 of FIG. 1;
- FIG. 4 is a vertical sectional view through the manifold block at about the line 4-4 of FIG. 1;
- a compressor embodying the principles of the present invention includes a closed housing ll) comprising an upper portion II and a lower portion 12 which are hermetically sealed to provide a gas-tight interior to which intake gas is supplied by an inlet fitting 14 in the lower housing portion 12.
- the housing 10 is elongated in a vertical direction. as illus' trated in FIGS. 1 and 3. As best seen in FIG. 2, the housing has a generally elliptical cross-sectional configuration which provides adequate interior space while occupying minimum volume in a refrigeration or air conditioning package.
- the housing It] includes mounting brackets as at l5 adapted for use in suitably supporting the compressor.
- a cylinder block 17 is disposed in the lower portion of the housing I0.
- the cylinder block is somewhat skeletal. with a hollow central portion. and is formed at one side with a pair of cylinders 18 which are vertically spaced and radially aligned relative to each other.
- the cylinders l8 are generally in line with the major axis of the elliptical cross-sectional configuration of the housing 10, and each of the cylinders includes a reciprocal piston 19.
- the cylinder block 17 is supported bu springs as at 20, at opposite sides of the block, in turn supported on brackets 21 secured to the lower portion 12 of the housing 10.
- An electric motor is mounted on the cylinder block 17 in the upper portion of the housing 10.
- the motor includes a rotor 22 which is centrally disposed in the housing portion 1] and a surrounding stator 24.
- a drive shaft 26 is secured to the rotor for rotation therewith.
- the shaft 26 is supported in an upper bearing 27 in the cylinder block I7 and a lower bearing 28 in a bearing plate secured to the cylinder block as at 29.
- the shaft 26 includes eccentric portions 30 and 31 connected by rods 32 for reciprocating the pistons 19.
- the bottom of the lower housing portion 12 is formed with an oil sump 37 for holding lubricating fluid.
- the lower portion ofthe shaft 35 extends into the lubricating fluid and a cover plate 38 includes an inlet 39 for admitting fluid to the lower end of the shaft which functions as a centrifugal pump.
- the lubricating fluid is supplied by such pump to V-shaped lubricating grooves 40 in the shaft portion 35.
- the shaft 26 is constructed with interior passages which supply lubricating fluid to an aperture 42 in eccentric 30, an aperture 43 in accentric 31. and an aperture 44 in shaft portion 34.
- the details of the lubricating system form no part of the present invention and need not be described further.
- the outer ends of the cylinders 18 are closed by a valve plate 50 secured to the cylinder block.
- the valve plate 50 is provided with a pair of inlet ports 51 (FIG. 4) which communicate with the upper cylinder 18 and a pair of inlet ports 52 which communicate with the lower cylinder 18.
- the value plate also includes a pair of outlet ports 53 which communicate with the upper cylinder 18 and a pair of outlet ports 54 which communicate with the lower cylinder 18.
- inlet valving in the form of leaf members as at 56 adapted to admit gas to the cylinders on suction strokes of the piston.
- outlet ports 53 and 54 is outlet valving in the form of leaf members as shown at 57 for discharging gas under pressure during the compression strokes of the pistons 19.
- a manifold block 60 is positioned on the valve plate 50 and includes an inlet chamber 62 communicating with the inlet ports 51 and 52 (FIG. 4).
- the block 60 also includes an outlet chamber 63 communicating with the outlet ports 53 and 54.
- intake gas is provided to the interior of the housing through an inlet fitting 14.
- annular intake muffler 65 which communicates through ports as at 66 with the interior of the housing 10.
- the intake muffler 65 is supported on the stator 24 and urged thereagainst resiliently by a coiled compression spring 67.
- a pair of intake tubes 68 extend alongside the motor at the opposite side from the manifold block 60 and each communicates with transversely extending passage 69 in the cylinder block leading to the inlet chamber 62.
- the specific construction of each intake tube 68 is the subject of my co pending application Ser. No. 340,533, filed Mar. l2, l973, and assigned to the assignee of this application.
- the intake muffler 6S and the intake tubes 68 provide for muffling of the sound associated with the intake valving 56.
- the manifold block 60 is formed with a second outlet chamber 70 which communicates with the outlet chamber 63 through a restricted passage 71.
- An additional outlet chamber 72 communicates with the chamber 70 through a restricted passage 73.
- the outlet chamber 72 communicates at 75 with an outlet tube 76 which extends downwardly alongside the manifold block 60, as shown in FIG, 2. then around to the lower end of the cylinder block, and ultimately to an end portion 78 outside the housing 10.
- the drive shaft 26 is rotated to reciprocate the pistons 18.
- the pistons draw gas into the cylinders through the intake muffling system.
- Intake gas supplied through the inlet fitting l4 circulates through the interior of the housing 11 for cooling the electric motor.
- pressurized gas is delivered through the discharge muffling system including the chamber 63, restricted passage 71, the chamber 70, restricted passage 73, and the outlet chamber 72.
- the relatively hotter discharge system is separated from the relatively cooler intake tubing 68 so as to transfer as little heat as possible thereto.
- the entire assembly is compactly arranged in the elliptical housing so that the housing closely surrounds the cylinder block, the manifold block 60, and the intake tubing 68, with the manifold block and the tubing 68 generally aligned with the major axis of the elliptical cross section of the housing.
- the discharge valving for both cylinders is compactly arranged at one side of the cylinder block, with the cylinder vertically spaced and radially aligned, so that both cylinders discharge directly into the outlet chamber 63, which facil itates location of the relatively large discharge muffler at one side of the housing, isolated from the intake tubing.
- a gas compressor comprising,
- an elongate sealed housing having a generally elliptical transverse cross section
- an electric motor mounted in one end portion of the housing including a rotor and a surrounding stator centrally disposed with respect to the elliptical housing cross section,
- a cylinder block mounted in the other end portion of the housing including at least one radial cylinder disposed generally along the major axis of the elliptical cross section of the housing and having a reciprocal piston,
- dv drive shaft rotatable with the rotor and including and eccentric portion for reciprocating said piston
- a manifold block mounted on the cylinder block at one end of the major axis of the elliptical housing, adjacent the valving, and including an inlet chamber communicating with the intake valving and an outlet chamber communicating with the discharge valving,
- inlet passage extending transversely in the cylinder block from the intake tubing to the inlet chamber
- a gas compressor comprising,
- an upright hermetically sealed housing having a generally elliptical transverse cross section
- a cylinder block mounted in a lower portion of the housing including vertically spaced transversely extending cylinders disposed along the major axis of the elliptical cross section of the housing and having reciprocal pistons,
- an electric motor mounted on the cylinder block in the upper portion of the housing including a cen' trally disposed rotor and a surrounding stator.
- valve plate on the cylinder block at the outer end of cylinders. cylinder.
- a manifold block mounted on the valve plate at one end of the major axis of the elliptical housing and extending upwardly alongside the motor
- a plurality of intake tubes extending downwardly along the side of the motor at the end of the major axis ofthe elliptical housing opposite said manifold block. the intake tubes leading from the inlet muffler to the cylinder block.
- an inlet passage extending transversely through the cylinder block from the intake tubes to the inlet chamber.
- a gas compressor comprising, a. an elongate sealed housing having a generally elliptical transverse cross section.
- an electric motor mounted in one end portion of the housing including a rotor and a stator.
- a cylinder block aligned with the motor in the other end portion of the housing including at least one cylinder disposed generally along the major axis of the elliptical cross section of the housing and having a reciprocal piston.
- an inlet in the housing for supplying gas to the housing.
- means including intake tubing extending along the side of the motor at the other end of the major axis of the elliptical housing and opposite from the manifold block, leading to the cylinder block and a passage through the block. communicating between the housing and the inlet chamber.
- a discharge conduit communicating the outlet chamber of the manifold block with the exterior of the housing.
- a gas compressor comprising.
- an electric motor mounted in one end portion of the housing including a centrally disposed rotor and a surrounding stator,
- a cylinder block mounted in the other end portion of the housing including at least one radial cylinder having a reciprocal piston.
- a drive shaft rotatable with the rotor and including an eccentric portion for reciprocating said piston.
- a manifold block mounted on the cylinder block adjacent the valving including an intake chamber communicating with the intake valving and an out let chamber communicating with the discharge valving.
- an intake muffler adjacent the end of the motor remote from the cylinder block.
- an inlet passage extending transversely in the cylinder block and from the inlet tubing to the inlet chamber
- a discharge conduit communicating the outlet chamber with the exterior of the housing.
Abstract
Description
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US385882A US3876339A (en) | 1973-08-06 | 1973-08-06 | Reciprocating piston gas compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US385882A US3876339A (en) | 1973-08-06 | 1973-08-06 | Reciprocating piston gas compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US3876339A true US3876339A (en) | 1975-04-08 |
Family
ID=23523243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US385882A Expired - Lifetime US3876339A (en) | 1973-08-06 | 1973-08-06 | Reciprocating piston gas compressor |
Country Status (1)
Country | Link |
---|---|
US (1) | US3876339A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054467A1 (en) * | 1980-12-12 | 1982-06-23 | L'unite Hermetique S.A. | Hermetic refrigeration compressor |
FR2505035A1 (en) * | 1981-04-29 | 1982-11-05 | White Consolidated Ind Inc | HERMETIC REFRIGERATION COMPRESSOR EQUIPPED WITH SILENCER, ESPECIALLY FOR HOUSEHOLD REFRIGERATORS |
EP0073469A1 (en) * | 1981-08-25 | 1983-03-09 | MATSUSHITA REIKI Co., Ltd. | A sealed type motor compressor |
US4396359A (en) * | 1981-07-20 | 1983-08-02 | Carrier Corporation | Motor compressor unit |
US4421453A (en) * | 1982-02-18 | 1983-12-20 | The Trane Company | Centrifugal oil pump |
US4427349A (en) | 1977-02-10 | 1984-01-24 | Copeland Corporation | Refrigeration compressor suspension system |
US4534710A (en) * | 1983-03-02 | 1985-08-13 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Swash-plate-type compressor having suction and discharge damping chambers |
US4652217A (en) * | 1982-08-12 | 1987-03-24 | Diesel Kiki Co., Ltd. | Double acting type compressor |
US4715790A (en) * | 1985-03-12 | 1987-12-29 | Diesel Kiki Co., Ltd. | Compressor having pulsating reducing mechanism |
US4795316A (en) * | 1984-08-03 | 1989-01-03 | Carrier Corporation | Compressor suction pulse attenuator |
US5288211A (en) * | 1992-07-08 | 1994-02-22 | Tecumseh Products Company | Internal baffle system for a multi-cylinder compressor |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US5358386A (en) * | 1992-08-26 | 1994-10-25 | Matsushita Refrigeration Company | Hermetic compressor |
US5980222A (en) * | 1997-11-13 | 1999-11-09 | Tecumseh Products Company | Hermetic reciprocating compressor having a housing divided into a low pressure portion and a high pressure portion |
US6186751B1 (en) * | 1996-11-19 | 2001-02-13 | Zanussi Elettromeccanica S.Pa. | Head and silencer of a refrigeration compressor |
US6568921B2 (en) * | 2000-01-29 | 2003-05-27 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20040223854A1 (en) * | 2000-12-01 | 2004-11-11 | Tomell Phillip A. | Reciprocating piston compressor having improved noise attenuation |
WO2006020971A1 (en) * | 2004-08-13 | 2006-02-23 | Thomas Industries, Inc. | Pump cooling system |
US20060275150A1 (en) * | 2005-05-23 | 2006-12-07 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20110171044A1 (en) * | 2008-09-18 | 2011-07-14 | Carrier Corporation | Multi-stage reciprocating compressor |
DE102013113652A1 (en) | 2013-12-06 | 2015-06-11 | Secop Gmbh | Hermetic refrigerant compressor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3288357A (en) * | 1961-08-31 | 1966-11-29 | Copeland Refrigeration Corp | Refrigeration motor-compressor |
US3387774A (en) * | 1966-11-21 | 1968-06-11 | Copeland Refrigeration Corp | Means for inhibiting noise and slugging in refrigerant compressors |
US3509907A (en) * | 1968-09-16 | 1970-05-05 | Copeland Refrigeration Corp | Compressor valving assembly |
-
1973
- 1973-08-06 US US385882A patent/US3876339A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3288357A (en) * | 1961-08-31 | 1966-11-29 | Copeland Refrigeration Corp | Refrigeration motor-compressor |
US3387774A (en) * | 1966-11-21 | 1968-06-11 | Copeland Refrigeration Corp | Means for inhibiting noise and slugging in refrigerant compressors |
US3509907A (en) * | 1968-09-16 | 1970-05-05 | Copeland Refrigeration Corp | Compressor valving assembly |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4427349A (en) | 1977-02-10 | 1984-01-24 | Copeland Corporation | Refrigeration compressor suspension system |
EP0054467A1 (en) * | 1980-12-12 | 1982-06-23 | L'unite Hermetique S.A. | Hermetic refrigeration compressor |
US4401418A (en) * | 1981-04-29 | 1983-08-30 | White Consolidated Industries, Inc. | Muffler system for refrigeration compressor |
FR2505035A1 (en) * | 1981-04-29 | 1982-11-05 | White Consolidated Ind Inc | HERMETIC REFRIGERATION COMPRESSOR EQUIPPED WITH SILENCER, ESPECIALLY FOR HOUSEHOLD REFRIGERATORS |
US4396359A (en) * | 1981-07-20 | 1983-08-02 | Carrier Corporation | Motor compressor unit |
EP0073469A1 (en) * | 1981-08-25 | 1983-03-09 | MATSUSHITA REIKI Co., Ltd. | A sealed type motor compressor |
US4421453A (en) * | 1982-02-18 | 1983-12-20 | The Trane Company | Centrifugal oil pump |
US4652217A (en) * | 1982-08-12 | 1987-03-24 | Diesel Kiki Co., Ltd. | Double acting type compressor |
US4534710A (en) * | 1983-03-02 | 1985-08-13 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Swash-plate-type compressor having suction and discharge damping chambers |
US4795316A (en) * | 1984-08-03 | 1989-01-03 | Carrier Corporation | Compressor suction pulse attenuator |
US4715790A (en) * | 1985-03-12 | 1987-12-29 | Diesel Kiki Co., Ltd. | Compressor having pulsating reducing mechanism |
US5288211A (en) * | 1992-07-08 | 1994-02-22 | Tecumseh Products Company | Internal baffle system for a multi-cylinder compressor |
US5358386A (en) * | 1992-08-26 | 1994-10-25 | Matsushita Refrigeration Company | Hermetic compressor |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US6186751B1 (en) * | 1996-11-19 | 2001-02-13 | Zanussi Elettromeccanica S.Pa. | Head and silencer of a refrigeration compressor |
US6155805A (en) * | 1997-11-13 | 2000-12-05 | Tecumseh Products Company | Hermetic compressor having acoustic insulator |
US5980222A (en) * | 1997-11-13 | 1999-11-09 | Tecumseh Products Company | Hermetic reciprocating compressor having a housing divided into a low pressure portion and a high pressure portion |
US6568921B2 (en) * | 2000-01-29 | 2003-05-27 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US7210912B2 (en) * | 2000-12-01 | 2007-05-01 | Tecumseh Products Company | Reciprocating piston compressor having improved noise attenuation |
US20040223854A1 (en) * | 2000-12-01 | 2004-11-11 | Tomell Phillip A. | Reciprocating piston compressor having improved noise attenuation |
WO2006020971A1 (en) * | 2004-08-13 | 2006-02-23 | Thomas Industries, Inc. | Pump cooling system |
US20060275150A1 (en) * | 2005-05-23 | 2006-12-07 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US8317489B2 (en) * | 2005-05-23 | 2012-11-27 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20110171044A1 (en) * | 2008-09-18 | 2011-07-14 | Carrier Corporation | Multi-stage reciprocating compressor |
US9382906B2 (en) * | 2008-09-18 | 2016-07-05 | Carrier Corporation | Multi-stage reciprocating compressor |
DE102013113652A1 (en) | 2013-12-06 | 2015-06-11 | Secop Gmbh | Hermetic refrigerant compressor |
DE102013113652B4 (en) | 2013-12-06 | 2018-03-08 | Secop Gmbh | Hermetic refrigerant compressor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3876339A (en) | Reciprocating piston gas compressor | |
US4523897A (en) | Two stage vacuum pump | |
US3883273A (en) | Rotary chamber-type compressor | |
US5173034A (en) | Discharge muffler for refrigeration compressor | |
US5482443A (en) | Multistage vacuum pump | |
US4854825A (en) | Multi-stage vacuum pump | |
US4277955A (en) | Twin compressor mechanism in one enclosure | |
GB2136511A (en) | Muffler system for refrigeration compressor | |
US9382906B2 (en) | Multi-stage reciprocating compressor | |
US3509907A (en) | Compressor valving assembly | |
US4971529A (en) | Twin rotary compressor with suction accumulator | |
US4889475A (en) | Twin rotary compressor with suction accumulator | |
US5022146A (en) | Twin rotary compressor with suction accumulator | |
US3785751A (en) | Swash plate type compressor | |
US2435108A (en) | Refrigeration compressor | |
US4457671A (en) | Hermetic type rotary compressor with silencer means | |
US4252506A (en) | Variable capacity compressor | |
US3175758A (en) | Compressor construction with inertial suction valve | |
US3229901A (en) | Refrigerant compressor | |
US2138093A (en) | Compressor | |
US3056542A (en) | Refrigerating apparatus | |
US2030759A (en) | Compressor unit | |
US5228843A (en) | Compressor for domestic refrigerators | |
US3981629A (en) | Swash-plate type compressor for air conditioning of vehicles | |
US2514223A (en) | Gas compressor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE Free format text: SECURITY INTEREST;ASSIGNOR:YORK INTERNATIONAL CORPORATION;REEL/FRAME:005156/0705 Effective date: 19881215 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE Free format text: SECURITY INTEREST;ASSIGNOR:YORK OPERATING COMPANY, F/K/A YORK INTERNATIONAL CORPORATION A DE CORP.;REEL/FRAME:005994/0916 Effective date: 19911009 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE Free format text: SECURITY INTEREST;ASSIGNOR:YORK INTERNATIONAL CORPORATION (F/K/A YORK OPERATING COMPANY);REEL/FRAME:006007/0123 Effective date: 19911231 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:YORK INTERNATIONAL CORPORATION, A DE CORP.;REEL/FRAME:006194/0182 Effective date: 19920630 |