US3864064A - Suction muffler tube for compressor - Google Patents
Suction muffler tube for compressor Download PDFInfo
- Publication number
- US3864064A US3864064A US340553A US34055373A US3864064A US 3864064 A US3864064 A US 3864064A US 340553 A US340553 A US 340553A US 34055373 A US34055373 A US 34055373A US 3864064 A US3864064 A US 3864064A
- Authority
- US
- United States
- Prior art keywords
- tube
- intake
- compressor
- muffler
- housing
- 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
- 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
-
- 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
- F04B39/0066—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using sidebranch resonators, e.g. Helmholtz resonators
-
- 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
- Y10S181/00—Acoustics
- Y10S181/403—Refrigerator compresssor muffler
Definitions
- Inductive impedance is a direct function of the length of the suction inlet tube and an inverse function of the crosssectional area ofthe inlet tube.
- a gas compressor that attenuates both high and low frequency noise at the intake of the compressor without causing any intake starvation.
- suction inlet tubing assembly Firstly, there is provided an inner suction inlet tube extending from the compressor inlet to the muffler. This suction inlet tube has a cross-sectional area less than that required to feed the pump inlet and thus provides a greater inductive impedance that reduces noise in the compressor.
- a by-pass tube Surrounding the suction inlet tube is a by-pass tube extending partway up the suction inlet tube and closed around the inlet tube at the top thereof. Apertures are provided at the top of the by-pass tube to reduce noise and also provide secondary inlet flow to the compressor intake manifold.
- the cross-sectional area of the bypass tube i.e., the area of flow passage surrounding the suction inlet tube, is also less than prior art suction inlet tubes and thus provides a greater inductive impedance to low frequency noise generated by the intake valving.
- the combined cross-sectional area of the suction inlet tube and the by-pass tube is the same as or greater than prior art constructions so that there is no starvation at the compressor inlet.
- FIG. 1 is a longitudinal fragmentary section of a compressor unit according to the present invention
- FIG. 2 is a fragmentary section illustrating the inlet valving for one of the compressor cylinder
- a gas compressor unit 10 is illustrated consisting of a hermetic housing 12 having a cup-shaped lower housing member 14 interconnected with an upper housing member 15.
- a compressor unit 16 having a compressor block 17 supported in the lower housing 12 by suitable springs. Carried on the top of the compressor 16 is an electric motor 18 which drives the compressor through a centrally disposed shaft 20.
- the shaft 20, supported in bearings in the frame or block 17 drives a crank shaft 22 having cranks 23 and 24 respectively driving connecting rods 26 and 27in turn pivotally connected to pistons 30 and 31 reciprocable in cylinders 33 and 34, respectively.
- An intake and exhaust valving and manifold unit 36 is provided for conveying gases to and from the cylinders 33 and 34.
- the valving unit 36 includes a valving plate 38 shown more clearly in FIG. 2.
- the valve plate 38 includes a plurality of annularly arrayed inlet passages 40 along with two arcuate outlet ports 42 and 43.
- the inlet ports 40 are selectively opened and closed by an annular reed valve 45 shown clearly in FIG. 1.
- reed valve 45 will bend downwardly exposing the ports 40 and permitting the intake of gas into cylinder 34.
- Suitable outlet valving is provided on top of the valving plate 38 for selectively opening and closing the ports 42 and 43 upon the upward movement of the piston 31.
- a similar valving arrangement is provided in plate 38 for the cylinder 33.
- an intake manifold passage 50 For supplying gas to the inlet ports, an intake manifold passage 50 is provided having a vertically disposed intake inlet 52 which receives gases from a suction inlet tubing assembly 54.
- the suction inlet tubing 54 communicates with an annular muffler 56, for reducing inlet noise, which is suspended in the housing by spring 57.
- the muffler 56 has openings 60 in the lower plate thereof for the purpose of receiving inlet gas to the compressor.
- the suction tubing assembly 54 consists of a generally vertically extending inner suction inlet tube 58 extending from the compressor intake 52 to the muffler 56.
- a concentric by-pass tube 62 Surrounding the inner suction inlet tube 58 is a concentric by-pass tube 62 which fits within the intake opening 52 and extends upwardly to a point 63 where it is fixed to the inner suction inlet tube 58.
- By-pass tube 62 has inlet apertures 66 and 67 (rotated from the FIG. 1 view) for the purpose of receiving additional inlet fluid and also for permitting the attenuation of inlet valving noise by emitting noise waves within the housing 12 out of phase with noise from the muffler 56 to effect high frequency noise cancellation as discussed above.
- the by-pass tube 62 has dimples 70 in the lower end thereof for maintaining concentricity between the inner intake tube 58 and the by-pass tube 62.
- the purpose of the separate tube 62 is to provide atte'nuat'ion for low frequency noise caused by the intake valving.
- the low frequency noise may be attenuated by increasing the inductive impedance of the intake tubing assembly. This can be done either by increasing the length of the intake tubing, or decreasing the cross-sectional area of the intake tubing.
- a prior art intake tube 72 is illustrated in FIG. 5 having conventional by-pass apertures 74 for receiving additional inflow by-passing muffler 75 while providing the desired high-frequency noise cancellation. lf noise attenuation were attempted in this prior art construction, shown in FIG. 5, by decreasing the cross-section of suction inlet tube 72, gas starvation at the inlet 77 would occur. The present invention obviates this problem.
- the cross section indicated by arrow 80 of the inner tube 58 is less than the prior art suction tube 72 so that the inductive impedance of the tube 58 is increased and low frequency noise attenuation is increased.
- the cross-section indicated at 82 of the by-pass tube 62 is alsoless than the prior artintake tube 72 so that the inductive impedance of this tube is reduced and its noise attenuation increased.
- the combined flow areas defined by the cross-sectional areas 80 and 82 are the same as or greater than the prior art flow area defined by tube intake muffler means opening into said housing means,
- a by-passtube leading to said intake manifold and opening into said housing means without passing into the muffler means, said by-pass tube being concentric with said intake tube and surrounding the same.
- a gas compressor comprising:
- said compressor mounted below and driven by said electricmotor, said compressor having inlet valving which generates noise
- a suction inlet tube extending from the muffler means alongside the electric motor to the intake manifold
- means for reducing the'effective cross-section of the suction inlet tube without restricting the inlet gas flow to the intake manifold including a noise reducing by-pass tube surrounding the inlet tube and.
- said by-pass tube having a closed upper end engaging the suction inlet tube, said by-pass tube having aperture means therein permitting gas inflow and also attenuating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US340553A US3864064A (en) | 1973-03-12 | 1973-03-12 | Suction muffler tube for compressor |
JP49016879A JPS49120206A (de) | 1973-03-12 | 1974-02-13 | |
DE19742407650 DE2407650A1 (de) | 1973-03-12 | 1974-02-18 | Ansaug-schalldaempferrohr fuer verdichter |
AU65767/74A AU481578B2 (en) | 1973-03-12 | 1974-02-19 | Suction muffler tube for compressor |
FR7407229A FR2228164B1 (de) | 1973-03-12 | 1974-03-04 | |
IL44364A IL44364A (en) | 1973-03-12 | 1974-03-06 | Compressor muffler device |
GB1003174A GB1448604A (en) | 1973-03-12 | 1974-03-06 | Gas compressors |
CA194,715A CA1023323A (en) | 1973-03-12 | 1974-03-12 | Suction muffler tubes for compressor |
IT49334/74A IT1011086B (it) | 1973-03-12 | 1974-03-15 | Dispositivo silenziatore per compressore |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US340553A US3864064A (en) | 1973-03-12 | 1973-03-12 | Suction muffler tube for compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US3864064A true US3864064A (en) | 1975-02-04 |
Family
ID=23333886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US340553A Expired - Lifetime US3864064A (en) | 1973-03-12 | 1973-03-12 | Suction muffler tube for compressor |
Country Status (8)
Country | Link |
---|---|
US (1) | US3864064A (de) |
JP (1) | JPS49120206A (de) |
CA (1) | CA1023323A (de) |
DE (1) | DE2407650A1 (de) |
FR (1) | FR2228164B1 (de) |
GB (1) | GB1448604A (de) |
IL (1) | IL44364A (de) |
IT (1) | IT1011086B (de) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4239461A (en) * | 1978-11-06 | 1980-12-16 | Copeland Corporation | Compressor induction system |
EP0073469A1 (de) * | 1981-08-25 | 1983-03-09 | MATSUSHITA REIKI Co., Ltd. | Hermetisch geschlossener Kompressor |
US4477229A (en) * | 1982-08-25 | 1984-10-16 | Carrier Corporation | Compressor assembly and method of attaching a suction muffler thereto |
US5123816A (en) * | 1991-04-02 | 1992-06-23 | Bristol Compressors | Compressor suction noise attenuator and assembly |
US5164552A (en) * | 1990-12-27 | 1992-11-17 | Bristol Compressors | Compressor suction noise attenuator and assembly method |
US5174127A (en) * | 1990-11-13 | 1992-12-29 | Tecumseh Products Company | Suction muffler tube |
US5186614A (en) * | 1991-11-04 | 1993-02-16 | General Motors Corporation | Variable discharge flow attenuation for compressor |
US5330329A (en) * | 1993-06-01 | 1994-07-19 | Copeland Corporation | Suction conduit assembly mounting |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US5733106A (en) * | 1995-07-29 | 1998-03-31 | Samsung Electronics Co., Ltd. | Suction muffler for a reciprocating compressor with external holes to reduce noise attenuation |
US6722467B1 (en) | 2002-08-28 | 2004-04-20 | Brunswick Corporation | Noise attenuator for an air supply system of an internal combustion engine |
US20040223854A1 (en) * | 2000-12-01 | 2004-11-11 | Tomell Phillip A. | Reciprocating piston compressor having improved noise attenuation |
EP1538334A1 (de) * | 1996-06-14 | 2005-06-08 | Matsushita Refrigeration Company | Hermetischer Verdichter |
US20060275150A1 (en) * | 2005-05-23 | 2006-12-07 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20080118374A1 (en) * | 2006-11-20 | 2008-05-22 | Min Cheul Yun | Hermetic type compressor with suction pressure adjusting device |
US20080219863A1 (en) * | 2007-03-06 | 2008-09-11 | Lg Electronics Inc. | Connector for hermetic compressor and suction device of working fluid using the same |
US20090257892A1 (en) * | 2008-03-14 | 2009-10-15 | Danfoss Compressors Gmbh | Suction muffler for a hermetically enclosed refrigerant compressor |
US20100260621A1 (en) * | 2009-04-10 | 2010-10-14 | Panasonic Corporation | Hermetic compressor |
WO2011015954A1 (en) * | 2009-08-03 | 2011-02-10 | Koninklijke Philips Electronics, N.V. | Low restriction resonator with adjustable frequency characteristics for use in compressor nebulizer systems |
US8584795B1 (en) | 2012-09-04 | 2013-11-19 | Vac-Tron Equipment, Llc | Filter silencer |
US9931649B2 (en) | 2012-08-07 | 2018-04-03 | Vac-Tron Equipment, Llc | Rotating high pressure air and water nozzle |
US10166556B2 (en) | 2012-08-07 | 2019-01-01 | Vac-Tron Equipment, Llc | Pulsating high pressure air and water nozzle |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2951463A1 (de) * | 1979-12-20 | 1981-07-02 | Copeland Corp., Sidney, Ohio | Kompressoransaugsystem |
FR2496241A1 (fr) * | 1980-12-12 | 1982-06-18 | Unite Hermetique | Compresseur frigorifique hermetique |
US4401418B1 (en) * | 1981-04-29 | 1998-01-06 | White Consolidated Ind Inc | Muffler system for refrigeration compressor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2886129A (en) * | 1955-05-26 | 1959-05-12 | Coopers Mech Joints | Combined gas filters and silencers |
US3188975A (en) * | 1963-03-25 | 1965-06-15 | Southeastern Elevator Company | Hydraulic pulsation absorption system |
US3387774A (en) * | 1966-11-21 | 1968-06-11 | Copeland Refrigeration Corp | Means for inhibiting noise and slugging in refrigerant compressors |
US3396907A (en) * | 1965-07-17 | 1968-08-13 | Danfoss As | Refrigerant compressor with sound absorbing structure |
US3420052A (en) * | 1967-03-08 | 1969-01-07 | North American Rockwell | Combination exhaust muffler and heater |
US3736074A (en) * | 1972-04-20 | 1973-05-29 | Worthington Cei | Inlet, filter and noise suppressor enclosure for compressing apparatus |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509907A (en) * | 1968-09-16 | 1970-05-05 | Copeland Refrigeration Corp | Compressor valving assembly |
-
1973
- 1973-03-12 US US340553A patent/US3864064A/en not_active Expired - Lifetime
-
1974
- 1974-02-13 JP JP49016879A patent/JPS49120206A/ja active Pending
- 1974-02-18 DE DE19742407650 patent/DE2407650A1/de active Pending
- 1974-03-04 FR FR7407229A patent/FR2228164B1/fr not_active Expired
- 1974-03-06 IL IL44364A patent/IL44364A/en unknown
- 1974-03-06 GB GB1003174A patent/GB1448604A/en not_active Expired
- 1974-03-12 CA CA194,715A patent/CA1023323A/en not_active Expired
- 1974-03-15 IT IT49334/74A patent/IT1011086B/it active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2886129A (en) * | 1955-05-26 | 1959-05-12 | Coopers Mech Joints | Combined gas filters and silencers |
US3188975A (en) * | 1963-03-25 | 1965-06-15 | Southeastern Elevator Company | Hydraulic pulsation absorption system |
US3396907A (en) * | 1965-07-17 | 1968-08-13 | Danfoss As | Refrigerant compressor with sound absorbing structure |
US3387774A (en) * | 1966-11-21 | 1968-06-11 | Copeland Refrigeration Corp | Means for inhibiting noise and slugging in refrigerant compressors |
US3420052A (en) * | 1967-03-08 | 1969-01-07 | North American Rockwell | Combination exhaust muffler and heater |
US3736074A (en) * | 1972-04-20 | 1973-05-29 | Worthington Cei | Inlet, filter and noise suppressor enclosure for compressing apparatus |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4239461A (en) * | 1978-11-06 | 1980-12-16 | Copeland Corporation | Compressor induction system |
EP0073469A1 (de) * | 1981-08-25 | 1983-03-09 | MATSUSHITA REIKI Co., Ltd. | Hermetisch geschlossener Kompressor |
US4477229A (en) * | 1982-08-25 | 1984-10-16 | Carrier Corporation | Compressor assembly and method of attaching a suction muffler thereto |
US5174127A (en) * | 1990-11-13 | 1992-12-29 | Tecumseh Products Company | Suction muffler tube |
US5164552A (en) * | 1990-12-27 | 1992-11-17 | Bristol Compressors | Compressor suction noise attenuator and assembly method |
US5123816A (en) * | 1991-04-02 | 1992-06-23 | Bristol Compressors | Compressor suction noise attenuator and assembly |
US5186614A (en) * | 1991-11-04 | 1993-02-16 | General Motors Corporation | Variable discharge flow attenuation for compressor |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US5330329A (en) * | 1993-06-01 | 1994-07-19 | Copeland Corporation | Suction conduit assembly mounting |
US5733106A (en) * | 1995-07-29 | 1998-03-31 | Samsung Electronics Co., Ltd. | Suction muffler for a reciprocating compressor with external holes to reduce noise attenuation |
EP1538334A1 (de) * | 1996-06-14 | 2005-06-08 | Matsushita Refrigeration Company | Hermetischer Verdichter |
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 |
US6722467B1 (en) | 2002-08-28 | 2004-04-20 | Brunswick Corporation | Noise attenuator for an air supply system of an internal combustion engine |
US8317489B2 (en) * | 2005-05-23 | 2012-11-27 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20060275150A1 (en) * | 2005-05-23 | 2006-12-07 | Bitzer Kuehlmaschinenbau Gmbh | Refrigerant compressor |
US20080118374A1 (en) * | 2006-11-20 | 2008-05-22 | Min Cheul Yun | Hermetic type compressor with suction pressure adjusting device |
US20080219863A1 (en) * | 2007-03-06 | 2008-09-11 | Lg Electronics Inc. | Connector for hermetic compressor and suction device of working fluid using the same |
US20090257892A1 (en) * | 2008-03-14 | 2009-10-15 | Danfoss Compressors Gmbh | Suction muffler for a hermetically enclosed refrigerant compressor |
US20100260621A1 (en) * | 2009-04-10 | 2010-10-14 | Panasonic Corporation | Hermetic compressor |
US8323001B2 (en) * | 2009-04-10 | 2012-12-04 | Panasonic Corporation | Hermetic compressor |
US20120121441A1 (en) * | 2009-08-03 | 2012-05-17 | Koninklijke Philips Electronics N.V. | Low restriction resonator with adjustable frequency characteristics for use in compressor nebulizer systems |
CN102472264A (zh) * | 2009-08-03 | 2012-05-23 | 皇家飞利浦电子股份有限公司 | 用于压缩机雾化器系统中的具有可调频率特性的低约束谐振器 |
WO2011015954A1 (en) * | 2009-08-03 | 2011-02-10 | Koninklijke Philips Electronics, N.V. | Low restriction resonator with adjustable frequency characteristics for use in compressor nebulizer systems |
CN102472264B (zh) * | 2009-08-03 | 2016-01-20 | 皇家飞利浦电子股份有限公司 | 用于压缩机雾化器系统中的具有可调频率特性的低约束谐振器 |
US9790937B2 (en) * | 2009-08-03 | 2017-10-17 | Koninklijke Philips N.V. | Low restriction resonator with adjustable frequency characteristics for use in compressor nebulizer systems |
US9931649B2 (en) | 2012-08-07 | 2018-04-03 | Vac-Tron Equipment, Llc | Rotating high pressure air and water nozzle |
US10166556B2 (en) | 2012-08-07 | 2019-01-01 | Vac-Tron Equipment, Llc | Pulsating high pressure air and water nozzle |
US8584795B1 (en) | 2012-09-04 | 2013-11-19 | Vac-Tron Equipment, Llc | Filter silencer |
Also Published As
Publication number | Publication date |
---|---|
FR2228164B1 (de) | 1978-06-02 |
GB1448604A (en) | 1976-09-08 |
DE2407650A1 (de) | 1974-09-19 |
IL44364A0 (en) | 1974-06-30 |
FR2228164A1 (de) | 1974-11-29 |
IL44364A (en) | 1977-01-31 |
CA1023323A (en) | 1977-12-27 |
AU6576774A (en) | 1975-08-21 |
IT1011086B (it) | 1977-01-20 |
JPS49120206A (de) | 1974-11-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3864064A (en) | Suction muffler tube for compressor | |
US6415888B2 (en) | Muffler | |
JP3626443B2 (ja) | 圧縮機用消音器 | |
US6105716A (en) | Venturi muffler having plural nozzles | |
CN1752443B (zh) | 线性压缩机的消声器 | |
EP0551713B1 (de) | Auspuffschalldämpfer für einen Kühlverdichter | |
GB2136511A (en) | Muffler system for refrigeration compressor | |
US6533064B1 (en) | Noise reduction device for use in reciprocating compressor using a side-branch silencer | |
KR20020080572A (ko) | 왕복동식 압축기의 흡입가스 안내 시스템 | |
US5979597A (en) | Suction silencer system for a refrigeration compressor | |
KR900002136B1 (ko) | 밀폐형 전동압축기의 소음기 구조 | |
US3650639A (en) | Air pumps | |
CN105351256A (zh) | 一种消声器 | |
CN208474029U (zh) | 增压发动机进气消声结构及进气软管总成 | |
US3101891A (en) | Hermetic reciprocating compressor unit | |
US2588112A (en) | Muffling mechanism for compressor valves | |
KR20050072268A (ko) | 외부 방진 구조를 갖는 리니어 압축기 | |
US3270955A (en) | Air compressor | |
KR20010018433A (ko) | 리니어 압축기의 흡입소음 저감구조 | |
JPS5893972A (ja) | 電動圧縮機 | |
KR0118036Y1 (ko) | 압축기의 소음감쇠장치 | |
KR200165728Y1 (ko) | 압축기용 흡입머플러의 냉매흡입관 | |
KR100529940B1 (ko) | 리니어 압축기의 소음 저감 장치 | |
SU902052A1 (ru) | Устройство дл снижени уровн шума | |
JPH0255880A (ja) | 圧縮機の消音装置 |
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 |