US3923098A - Forced air heat exchange unit with improved condensate removal construction - Google Patents
Forced air heat exchange unit with improved condensate removal construction Download PDFInfo
- Publication number
- US3923098A US3923098A US439505A US43950574A US3923098A US 3923098 A US3923098 A US 3923098A US 439505 A US439505 A US 439505A US 43950574 A US43950574 A US 43950574A US 3923098 A US3923098 A US 3923098A
- Authority
- US
- United States
- Prior art keywords
- fins
- channel
- condensate
- end plates
- heat exchange
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
-
- 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
- Y10S165/00—Heat exchange
- Y10S165/184—Indirect-contact condenser
- Y10S165/198—Condensate guiding means attached to heat transfer surface
- Y10S165/201—Condensate guiding means attached to heat transfer surface including fin member associated with condensate guiding means
Definitions
- ABSTRACT A forced air heat exchange unit comprising at least one horizontally-extending coil of thermally conductive tubing carrying thermally conductive fins thereon and supported between end plates, at least one condensate channel connected across and supported within cut-out portions formed in all of said fins and end plates adjacent the end stream edges thereof to direct condensate from the fins to the area of at least one of said end plates and thereby reduce entrainment of-fly-off condensate in the conditioned air.
- the present invention relates to heat exchangers of the type in which a stream of air is cooled by being forced horizontally across the finned surfaces of a cooling coil or at an angle of up to approximately 45of the horizontal.
- the heat exchange unit is preferably of the dehumidifying or wetted surface type. Condensate droplets are known to accumulate upon the fins and are forced by the airstream towards the downstream edge thereof where, upon attaining sufficient size, such droplets are blow off the fins and are entrained for a distance in the airstream.
- Yet another object of the invention is to provide a heat exchange unit of the forced air type mounted at an angle up to 45of horizontal where drip-back of the condensate is substantially eliminated.
- a forced air heat exchange unit comprising at least one horizontally extending coil of thermallyconductive tubing supported between end plates and carrying thermally-conductive fins thereon, the improvement comprising at least one condensate channel connected across and supported within cut-out portions formed in all of said fins and end plates adjacent the downstream edges thereof, whereby condensate formed on said fins is conducted via said channels to the area of at least one of said end plates for collection and disposal.
- FIG. 1 is a perspective view of a heat exchange unit embodying the present invention
- FIG. 2 is an end view of the heat exchange unit of FIG. 1;
- FIG. 3 is an enlarged view of a condensate channel nested within a notch of a fin in accordance with a preferred embodiment of the invention
- FIG. 4 is a view similar to FIG. 1 showing a heat exchanger in which two condensate channels are positioned in superposed relation;
- FIG. 5 is a front elevational view of a portion of a heat exchange unit according to a second embodiment of the invention.
- FIG. 6 is an end view of the heat exchange unit of FIG. 5.
- a heat exchange unit 10 which includes a coil of thermally conplate-like fins 12 formed of a thermally conductive ma terial.
- the coil is supported between a pair of end plates 13.
- a blower (not shown), is provided to direct a stream of the air to be conditioned across the surfaces of the fins in the direction indicated by the arrows in FIGS. 1, 2 and 4.
- the fins may be provided with at least one notch 14in the downstream edges thereof in order to accommodate one or more condensate channels 15 to be hereinafter described. It will, of course, be appreciated that several such channels may be utilized with each such heat exchanger.
- a notch is formed in the downstream edge of each of the fins at approximately the same elevation to receive each of such channels which are to be employed.
- the end plates 13 are similarly provided with notches 16 for reception of the condensate channel.
- the notches of both the fins and end plates are formed such that the base 17 of the notch and the upper and lower sidewalls 18, 19 thereof are similarly dimensioned.
- the condensate channel may be formed to present a U-shaped configuration in cross-section in which the legs have unequal lengths.
- the base 20 of the channel and the shorter leg 21 are nested within the notches of the fins and end plates whereas the channel leg 22 having the greater dimension extends upwardly outside of the notches either on or in close proximity to the down stream edges of the fins.
- One alternate form of construction, not illustrated, involves positioning leg 22 in close engagement with the edges of the fins such as by being secured thereto by means of a suitable adhesive.
- the notches on the fins and end plates may be so located elevationally across the face of the heat exchanger that a slight pitch is desirably provided for the condensate channel in order to expedite drainage of the condensate to one of the end plates. Since the ends of the channel are open, however, it will be appreciated that while a pitch will accelerate drainage of the condensate it is not essential.
- a condensate pan (not shown) may be positioned below the heat exchanger to receive condensate which has been conducted away from the fins to the area of the end plates. This pan may also serve to collect such condensate as may avoid entrapment in the channel and drip down from the fins.
- the notches may be so arranged as to provide for drainage from the mid-point of the coil to each of the end plates.
- each channel could present the appearance of a slightly inverted V.
- the channel is constructed as a unitary member although it is within the scope of the invention to construct the channel in more than one piece and to either assemble the sections in end-to-end relationship within the notches or to unite the section prior to positioning on the fins and end plates as may be preferred where drainage to both end plates from the mid-point of the heat exchanger is desired.
- One or both of the terminal ends of the condensate channel may extend a substantial distance beyond the end plate.
- dehumidifying coils of substantial height and/or such coils operating at high volumetric airflow rates may require a number of channels positioned across the air-leaving face of such coils.
- FIGS. 5 and 6 where another embodiment of the invention is illustrated.
- the condensate channel is made up by a series of collars 23 which are extruded on the fins.
- the collars are so dimensioned that when the fins are in position on the coil of tubing they interconnect so as to form a continuous channel across all of the fins to at least one of the end plates.
- the channel is located closely adjacent the downstream edges of the fins and end plates. It will, of course, be understood that the collars may be formed at the edge itself as depicted in FIGS. l4.
- drainage of the condensate is preferably conducted to a point beyond the exterior surface of the end plate in order to avoid entrainment of any of the collected condensate in the airstream which usually flows between the interior surfaces of the end plates and across the surfaces of the fins.
- the construction of the present invention enables the realization of an uneven across-the-face surface temperature when desired such as in face control circuited coils controlled by two or more in-tube fluid control devices.
- a forced air heat exchange unit having at least one horizontally extending coil of thermallyconductive tubing supported between end plates and carrying thermally-conductive fins thereon
- the im provement comprising at least one condensate channel connected across and supported within notches formed in all of said fins and end plates adjacent the downstream edges thereof, whereby condensate fonned on said fins is conducted via such channel to the area of at least one of said end plates for collection and disposal, said channel and notches being dimensioned such that one leg and substantially all of the base of said channel nests within said notches with the base of the notches being substantially coextensive in height with said one leg of the channel, the other leg of said chan nel being of greater dimension than said one leg and extending upwardly outside of said notches in close proximity to the downstream edges of said fins.
- a forced air heat exchange unit comprising at least one horizontally extending coil of thermallyconductive tubing supported between end plates and carrying thermally conductive fins thereon, the improvement comprising at least one condensate channel connected across and supported within cut-out portions formed in all of said fins and end plates adjacent the downstream edges thereof, whereby condensate formed on said fins is conducted via such channel to the area of at least one of said end plates for collection and disposal, said condensate channel comprising individual extruded collars formed on said fins with a crosssectional configuration of a half-moon, said collars being so dimensioned that when the fins are in position on the coil tubes said collars engage to form a continu-
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US439505A US3923098A (en) | 1974-02-14 | 1974-02-14 | Forced air heat exchange unit with improved condensate removal construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US439505A US3923098A (en) | 1974-02-14 | 1974-02-14 | Forced air heat exchange unit with improved condensate removal construction |
Publications (1)
Publication Number | Publication Date |
---|---|
US3923098A true US3923098A (en) | 1975-12-02 |
Family
ID=23744979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US439505A Expired - Lifetime US3923098A (en) | 1974-02-14 | 1974-02-14 | Forced air heat exchange unit with improved condensate removal construction |
Country Status (1)
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US (1) | US3923098A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4000779A (en) * | 1975-11-28 | 1977-01-04 | General Electric Company | Blowoff baffle |
US4089188A (en) * | 1975-06-27 | 1978-05-16 | Borg-Warner Corporation | Evaporator coil |
US4314607A (en) * | 1979-11-14 | 1982-02-09 | Deschamps Laboratories, Inc. | Plate type heat exchanger |
US4372759A (en) * | 1981-08-28 | 1983-02-08 | United Technologies Corporation | Electrolyte vapor condenser |
US4586346A (en) * | 1985-03-29 | 1986-05-06 | St Pierre Guy | Gravity cooling coil device |
US4748821A (en) * | 1986-10-16 | 1988-06-07 | Allen Berenter | Method and apparatus for dispensing condensate |
FR2746906A1 (en) * | 1996-03-28 | 1997-10-03 | Valeo Climatisation | EVAPORATOR FOR PROMOTING CONDENSATION WATER |
US6321556B1 (en) * | 1998-06-22 | 2001-11-27 | Carrier Corporation | Three-way mounting of an air conditioner |
US6439300B1 (en) | 1999-12-21 | 2002-08-27 | Delphi Technologies, Inc. | Evaporator with enhanced condensate drainage |
CN102338592A (en) * | 2010-07-27 | 2012-02-01 | 约克广州空调冷冻设备有限公司 | Heat exchanger for heat pump of air conditioner |
WO2012072836A1 (en) * | 2010-12-01 | 2012-06-07 | Climetal, S.A. | Microchannel evaporator/condenser |
CN102889820A (en) * | 2012-10-15 | 2013-01-23 | 三花控股集团有限公司 | Condensed water diversion structure for heat exchanger as well as heat exchanger |
WO2013173723A1 (en) * | 2012-05-18 | 2013-11-21 | Delphi Technologies, Inc. | Heat exchanger having a condensate extractor |
CN104870922A (en) * | 2012-12-21 | 2015-08-26 | 特灵国际有限公司 | Condensate drain devices for heat exchanger coil and methods for making the same |
US20220349632A1 (en) * | 2021-04-28 | 2022-11-03 | Carrier Corporation | Microchannel heat exchanger drain |
US11493285B2 (en) * | 2017-09-15 | 2022-11-08 | Alfa Laval Corporate Ab | Baffle support and baffle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2876631A (en) * | 1956-05-24 | 1959-03-10 | Pierce John B Foundation | Fin structure |
US2983115A (en) * | 1958-02-03 | 1961-05-09 | Carrier Corp | Heat transfer device with condensate drainage means |
US3306071A (en) * | 1965-08-26 | 1967-02-28 | Earl F Holyfield | Cooling coil with condensate director |
US3383878A (en) * | 1967-05-01 | 1968-05-21 | Franklin W. Booth | Condenser-separator |
US3703815A (en) * | 1971-09-27 | 1972-11-28 | Trane Co | Double fin cooling coil with condensate director |
-
1974
- 1974-02-14 US US439505A patent/US3923098A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2876631A (en) * | 1956-05-24 | 1959-03-10 | Pierce John B Foundation | Fin structure |
US2983115A (en) * | 1958-02-03 | 1961-05-09 | Carrier Corp | Heat transfer device with condensate drainage means |
US3306071A (en) * | 1965-08-26 | 1967-02-28 | Earl F Holyfield | Cooling coil with condensate director |
US3383878A (en) * | 1967-05-01 | 1968-05-21 | Franklin W. Booth | Condenser-separator |
US3703815A (en) * | 1971-09-27 | 1972-11-28 | Trane Co | Double fin cooling coil with condensate director |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4089188A (en) * | 1975-06-27 | 1978-05-16 | Borg-Warner Corporation | Evaporator coil |
US4000779A (en) * | 1975-11-28 | 1977-01-04 | General Electric Company | Blowoff baffle |
US4314607A (en) * | 1979-11-14 | 1982-02-09 | Deschamps Laboratories, Inc. | Plate type heat exchanger |
US4372759A (en) * | 1981-08-28 | 1983-02-08 | United Technologies Corporation | Electrolyte vapor condenser |
FR2511885A1 (en) * | 1981-08-28 | 1983-03-04 | United Technologies Corp | METHOD FOR SEPARATING ELECTROLYTE VAPOR FROM A GAS STREAM CONTAINING WATER VAPOR |
US4586346A (en) * | 1985-03-29 | 1986-05-06 | St Pierre Guy | Gravity cooling coil device |
US4748821A (en) * | 1986-10-16 | 1988-06-07 | Allen Berenter | Method and apparatus for dispensing condensate |
FR2746906A1 (en) * | 1996-03-28 | 1997-10-03 | Valeo Climatisation | EVAPORATOR FOR PROMOTING CONDENSATION WATER |
US6321556B1 (en) * | 1998-06-22 | 2001-11-27 | Carrier Corporation | Three-way mounting of an air conditioner |
US6439300B1 (en) | 1999-12-21 | 2002-08-27 | Delphi Technologies, Inc. | Evaporator with enhanced condensate drainage |
CN102338592A (en) * | 2010-07-27 | 2012-02-01 | 约克广州空调冷冻设备有限公司 | Heat exchanger for heat pump of air conditioner |
CN102338592B (en) * | 2010-07-27 | 2013-04-24 | 约克广州空调冷冻设备有限公司 | Heat exchanger for heat pump of air conditioner |
WO2012072836A1 (en) * | 2010-12-01 | 2012-06-07 | Climetal, S.A. | Microchannel evaporator/condenser |
ES2383975A1 (en) * | 2010-12-01 | 2012-06-28 | Climetal, S.A. | Microchannel evaporator/condenser |
WO2013173723A1 (en) * | 2012-05-18 | 2013-11-21 | Delphi Technologies, Inc. | Heat exchanger having a condensate extractor |
CN104285108A (en) * | 2012-05-18 | 2015-01-14 | 德尔福技术有限公司 | Heat exchanger having a condensate extractor |
CN104285108B (en) * | 2012-05-18 | 2017-05-31 | 马勒国际有限公司 | Heat exchanger with condensate withdrawal device |
CN102889820A (en) * | 2012-10-15 | 2013-01-23 | 三花控股集团有限公司 | Condensed water diversion structure for heat exchanger as well as heat exchanger |
CN104870922A (en) * | 2012-12-21 | 2015-08-26 | 特灵国际有限公司 | Condensate drain devices for heat exchanger coil and methods for making the same |
US11493285B2 (en) * | 2017-09-15 | 2022-11-08 | Alfa Laval Corporate Ab | Baffle support and baffle |
US20220349632A1 (en) * | 2021-04-28 | 2022-11-03 | Carrier Corporation | Microchannel heat exchanger drain |
US11988422B2 (en) * | 2021-04-28 | 2024-05-21 | Carrier Corporation | Microchannel heat exchanger drain |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: MERCANTILE TEXAS CREDIT CORPORATION; MERCANTILE CO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SYNDER GENERAL CORPORATION;REEL/FRAME:003985/0168 Effective date: 19820401 Owner name: MERCANTILE TEXAS CREDIT CORPORATION, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SYNDER GENERAL CORPORATION;REEL/FRAME:003985/0168 Effective date: 19820401 |
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AS | Assignment |
Owner name: SNYDER GENERAL CORPORATION, A CORP. OF TEX. Free format text: ASSIGNS THE ENTIRE INTEREST, AS OF APRIL 2, 1982 SUBJECT TO LICENSES AND CONDITIONS RECITED;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:004051/0894 Effective date: 19820402 Owner name: SNYDER GENERAL CORPORATION Free format text: ASSIGNS THE ENTIRE INTEREST, AS OF APRIL 2, 1982 SUBJECT TO LICENSES AND CONDITIONS RECITED, SEE DOCUMENT FOR DETAILS;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:004051/0894 Effective date: 19820402 |
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Owner name: CITICORP INDUSTRIAL CREDIT, INC., 717 NORTH HARWOO Free format text: SECURITY INTEREST;ASSIGNOR:SYNDER GENERAL CORPORATION A TX CORP;REEL/FRAME:004307/0351 Effective date: 19840726 |
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Owner name: MCQUAY INC., A CORP. OF MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SNYDER GENERAL CORPORATION, A TX CORP.;REEL/FRAME:004607/0038 Effective date: 19860327 Owner name: SNYDER GENERAL CORPORATION Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MCQUAY INC.;REEL/FRAME:004607/0047 Effective date: 19860327 Owner name: MCQUAY INC., A CORP. OF MINNESOTA, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SNYDER GENERAL CORPORATION, A TX CORP.;REEL/FRAME:004607/0038 Effective date: 19860327 Owner name: SNYDER GENERAL CORPORATION, STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MCQUAY INC.;REEL/FRAME:004607/0047 Effective date: 19860327 |
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Owner name: CITICORP INDUSTRIAL CREDIT INC., 2700 DIAMOND SHAM Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION;REEL/FRAME:004765/0735 Effective date: 19870630 Owner name: CITICORP INDUSTRIAL CREDIT INC.,TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION;REEL/FRAME:004765/0735 Effective date: 19870630 |
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Owner name: CITICORP NORTH AMERICA, INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION, A MN CORP.;REEL/FRAME:005013/0592 Effective date: 19881117 |
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Owner name: SNYDERGENERAL CORPORATION, A MN CORP., TEXAS Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MCREDIT;REEL/FRAME:005003/0183 Effective date: 19881115 |
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Owner name: SNYDERGENERAL CORPORATION, A CORP. OF MINNESOTA, T Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP NORTH AMERICA, INC.;REEL/FRAME:005278/0013 Effective date: 19881117 Owner name: MCQUAY INC., A CORP. OF MINNESOTA, MINNESOTA Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP NORTH AMERICA, INC.;REEL/FRAME:005278/0013 Effective date: 19881117 |
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Owner name: SNYDERGENERAL CORPORATION A CORP. OF DELAWARE Free format text: RELEASE BY SECOND PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5013 FRAME 592.;ASSIGNOR:CITICORP NORTH AMERICA, INC. A CORP. OF DELAWARE;REEL/FRAME:006104/0270 Effective date: 19920326 |