US20030195071A1 - Automatic cooling mechanism for electrical device - Google Patents

Automatic cooling mechanism for electrical device Download PDF

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Publication number
US20030195071A1
US20030195071A1 US10/431,603 US43160303A US2003195071A1 US 20030195071 A1 US20030195071 A1 US 20030195071A1 US 43160303 A US43160303 A US 43160303A US 2003195071 A1 US2003195071 A1 US 2003195071A1
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United States
Prior art keywords
cooling mechanism
fan
electrical device
automatic cooling
mechanism according
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.)
Abandoned
Application number
US10/431,603
Inventor
Sun Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mustek Systems Inc
Transpacific Optics LLC
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to US10/431,603 priority Critical patent/US20030195071A1/en
Publication of US20030195071A1 publication Critical patent/US20030195071A1/en
Assigned to TRANSPACIFIC OPTICS LLC reassignment TRANSPACIFIC OPTICS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MUSTEK SYSTEMS, INC.
Assigned to MUSTEK SYSTEMS INC. reassignment MUSTEK SYSTEMS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, Sun
Assigned to MUSTEK SYSTEMS, INC. reassignment MUSTEK SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, Sun
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
    • B65H2301/5305—Cooling parts or areas of handling machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/04—Gearings for conveying rotary motion by endless flexible members with ropes

Definitions

  • the present invention relates to an automatic cooling mechanism, and more particularly to an automatic cooling mechanism for an electrical device.
  • ADF automatic document feeder
  • the ADF can automatically feed document sheets one by one to the flatbed scanner to be scanned.
  • most of the ADFs are asked to have reduced volumes and increased document-feeding speeds.
  • a lot of heat is generated by the elements such as the print circuit board of the ADF.
  • Cooling elements made of aluminum or copper, etc . . . are often used to reduce the temperature.
  • the cooling effects are limited.
  • the effect of a cooling cream is also limited.
  • the cooling cream must be coated on the surface of the high-temperature uniformly, otherwise many problems may happen.
  • a more efficient method is to use a fan to cool the high-temperature element.
  • conventional fan is equipped with a motor.
  • the additional motor will also generate heat to increase the temperature within the electrical device.
  • the additional motor will increase the cost.
  • An object of the present invention is to provide an efficient cooling mechanism for an electrical device.
  • Another object of the present invention is to provide a cooling mechanism for an electrical device without additional motor.
  • an automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft includes a fan mounted within the electrical device and a transmission mechanism connected between the fan and the rolling shaft for transmitting rotational kinetic energy from the rolling shaft to the fan to rotate the fan for reducing the temperature of the high-temperature element.
  • the transmission mechanism preferably includes an elastic element.
  • the elastic element is preferable a belt, a rope, etc . . .
  • the electrical device preferably further includes a shell structure for receiving therein the high-temperature element.
  • the fan may introduce air into the shell structure.
  • the air filled within the shell structure is exhausted by the fan.
  • the electrical device may further includes a hot-wind exist.
  • the hot-wind exist preferably includes a plurality of holes formed on the shell structure.
  • the electrical device may be an automatic document feeder (ADF).
  • ADF automatic document feeder
  • the ADF preferably includes a plurality of rollers mounted on the rolling shaft for feeding thereby a document.
  • FIG. 1 illustrates an embodiment of a cooling mechanism for an electrical device according to the present invention
  • FIG. 2 shows another embodiment of a cooling mechanism for an electrical device according to the present invention
  • FIG. 3 illustrates an example of an automatic document feeder (ADF).
  • FIG. 4 shows an embodiment of a cooling mechanism mounted within the ADF illustrated in FIG. 3.
  • an electrical device 1 has a shell 16 , a high-temperature element 2 , and a rolling shaft 12 .
  • the high-temperature element 2 is a print circuit board (PCB) or other element that will generate heat during the operation of the electrical device 1 .
  • a cooling mechanism 4 is mounted within the electrical device 1 .
  • the cooling mechanism 4 includes a fan 6 , a transmission mechanism 10 , and a prop 8 .
  • Slots 14 and 18 are formed on the rolling shaft 12 and the fan 6 respectively for receive therein the transmission mechanism 10 so that the fan 6 can be rotated through the rotational kinetic energy transmitted by the transmission mechanism 10 .
  • the transmission mechanism 10 is a belt, a rope, or any other elastic element.
  • the fan 6 and the rolling shaft 12 are connected by the transmission mechanism 10 . Accordingly, the fan will be rotated in accordance with the rotation of the rolling shaft 12 . Consequently, a cool wind will blow to the high-temperature element 2 and reduce its temperature.
  • the fan 6 is mounted just beside the high-temperature element 2 to blow to the high-temperature element 2 directly. However, the fan 6 can also be mounted at any suitable place to introduce cool air into the shell 16 of the electrical device 1 to reduce the global temperature within the shell 16 .
  • an electrical device 20 has a shell 24 , a high-temperature element 22 , and a rolling shaft 38 .
  • a cooling mechanism 26 is mounted within the electrical device 20 .
  • the cooling mechanism 26 includes a fan 28 , a transmission mechanism 32 , and a prop 30 .
  • Slots 34 and 36 are formed on the rolling shaft 38 and the fan 28 respectively for receive therein the transmission mechanism 32 so that the fan 28 can be rotated through the rotational kinetic energy transmitted by the transmission mechanism 32 .
  • the transmission mechanism 32 is a belt, a rope, or other elastic element.
  • a hot-wind exit 40 is formed on the shell 24 .
  • the hot-wind exit 40 may be a plurality of holes or any other type of exit for exhausting hot air within the shell 24 .
  • the fan is mounted on the prop 30 and is facing the shell 24 .
  • the fan 28 is rotated in accordance with the rotation of the rolling shaft 38 . Accordingly, the hot air is exhausted and the temperature within the shell 24 is reduced.
  • an ADF 50 includes a body shell 52 , a document-feeding path 54 formed on the bottom side of the body shell 52 , and rollers 56 , 58 , 60 , and 62 for urging the document sheet 64 to be moved in the feeding path 54 .
  • the document-feeding path 54 is formed by an inner shell 68 and an outer shell 70 .
  • the document-feeding path 54 further includes a scanning area 72 , which is an opening formed on the bottom of the outer shell 70 .
  • a document 64 is urged by the rollers 56 , 58 , 60 , and 62 to be moved in the document-feeding path 54 .
  • the document 64 enters the document-feeding path 54 from the entry 74 and leaves it from the outlet 76 .
  • the ADF 50 is mounted on a flatbed scanner 100 and the scanning area 72 is aligned to the reading unit (not shown) of the scanner 100 . While the document 64 passes through the scanning area 72 , it will be scanned by the scanner 100 .
  • rollers are necessary for the ADF to transmit document
  • rolling shafts are necessary to provide rolling kinetic energy to the rollers.
  • rollers 58 and 62 are mounted on rolling shafts 78 and 80 respectively.
  • the rollers 56 and 60 are also rolling since they contact with the rollers 58 and 62 respectively. Accordingly, the document sheet 64 will be transmitted forwardly once it passes the rollers 56 and 58 or 60 and 62 .
  • the rotational kinetic energy of the rolling shafts 78 and 80 is provided by a motor 82 through the gear set 84 .
  • the ADF 50 further includes a PCB 86 connected to a power 88 by a wire 90 . While the ADF 50 is operating, both the PCB 86 and the motor 82 will generate a considerable heat. Accordingly, a fan 92 is used to reduce the temperature within the body shell 52 of the ADF 50 . In stead of using an additional motor, the fan 92 is connected to the rolling shaft 78 by a transmission mechanism 94 to obtain the rotational kinetic energy.
  • the transmission mechanism 94 is a belt, a rope or other elastic element.
  • the present invention can not only be applied on the above-mentioned ADF, but also any other electrical device having a rolling shaft for a specified function. Since no additional motor is needed for the cooling mechanism of the present invention, the cost is reduced. Furthermore, the defect that an additional motor will further increase the temperature of the electrical device is avoided. Accordingly, the present invention is valuable for the industry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

The present invention provides an automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft. The mechanism includes a fan mounted within the electrical device and a transmission mechanism connected between the fan and the rolling shaft for transmitting rotational kinetic energy from the rolling shaft to the fan to rotate the fan for reducing the temperature of the high-temperature element.

Description

    FIELD OF THE INVENTION
  • The present invention relates to an automatic cooling mechanism, and more particularly to an automatic cooling mechanism for an electrical device. [0001]
    • BACKGROUND OF THE INVENTION
  • Today's electrical devices are required to have high integrations and high performances. Accordingly, some of the electrical elements are often have high temperatures. For example, an automatic document feeder (ADF) is developed to be used with a flatbed scanner. The ADF can automatically feed document sheets one by one to the flatbed scanner to be scanned. However, most of the ADFs are asked to have reduced volumes and increased document-feeding speeds. As a result, a lot of heat is generated by the elements such as the print circuit board of the ADF. Cooling elements made of aluminum or copper, etc . . . are often used to reduce the temperature. However, the cooling effects are limited. The effect of a cooling cream is also limited. Furthermore, the cooling cream must be coated on the surface of the high-temperature uniformly, otherwise many problems may happen. [0002]
  • A more efficient method is to use a fan to cool the high-temperature element. However, conventional fan is equipped with a motor. The additional motor will also generate heat to increase the temperature within the electrical device. Furthermore, the additional motor will increase the cost. [0003]
  • It is then attempted by the applicant to deal with the above-mentioned problems. [0004]
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide an efficient cooling mechanism for an electrical device. [0005]
  • Another object of the present invention is to provide a cooling mechanism for an electrical device without additional motor. [0006]
  • According to the present invention, an automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft is provided. The device includes a fan mounted within the electrical device and a transmission mechanism connected between the fan and the rolling shaft for transmitting rotational kinetic energy from the rolling shaft to the fan to rotate the fan for reducing the temperature of the high-temperature element. [0007]
  • The transmission mechanism preferably includes an elastic element. The elastic element is preferable a belt, a rope, etc . . . [0008]
  • The electrical device preferably further includes a shell structure for receiving therein the high-temperature element. [0009]
  • The fan may introduce air into the shell structure. Of course, in another embodiment, the air filled within the shell structure is exhausted by the fan. [0010]
  • The electrical device may further includes a hot-wind exist. The hot-wind exist preferably includes a plurality of holes formed on the shell structure. [0011]
  • The electrical device may be an automatic document feeder (ADF). The ADF preferably includes a plurality of rollers mounted on the rolling shaft for feeding thereby a document. [0012]
  • The present invention may best be understood through the following description with reference to the accompanying drawings, in which: [0013]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates an embodiment of a cooling mechanism for an electrical device according to the present invention; [0014]
  • FIG. 2 shows another embodiment of a cooling mechanism for an electrical device according to the present invention; [0015]
  • FIG. 3 illustrates an example of an automatic document feeder (ADF); and [0016]
  • FIG. 4 shows an embodiment of a cooling mechanism mounted within the ADF illustrated in FIG. 3.[0017]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. [0018]
  • Referring to FIG. 1, an [0019] electrical device 1 has a shell 16, a high-temperature element 2, and a rolling shaft 12. The high-temperature element 2 is a print circuit board (PCB) or other element that will generate heat during the operation of the electrical device 1. A cooling mechanism 4 is mounted within the electrical device 1. The cooling mechanism 4 includes a fan 6, a transmission mechanism 10, and a prop 8. Slots 14 and 18 are formed on the rolling shaft 12 and the fan 6 respectively for receive therein the transmission mechanism 10 so that the fan 6 can be rotated through the rotational kinetic energy transmitted by the transmission mechanism 10. The transmission mechanism 10 is a belt, a rope, or any other elastic element.
  • The [0020] fan 6 and the rolling shaft 12 are connected by the transmission mechanism 10. Accordingly, the fan will be rotated in accordance with the rotation of the rolling shaft 12. Consequently, a cool wind will blow to the high-temperature element 2 and reduce its temperature.
  • The [0021] fan 6 is mounted just beside the high-temperature element 2 to blow to the high-temperature element 2 directly. However, the fan 6 can also be mounted at any suitable place to introduce cool air into the shell 16 of the electrical device 1 to reduce the global temperature within the shell 16.
  • In another embodiment, the fan is served as an exhaust blower. Referring to FIG. 2, an [0022] electrical device 20 has a shell 24, a high-temperature element 22, and a rolling shaft 38. A cooling mechanism 26 is mounted within the electrical device 20. The cooling mechanism 26 includes a fan 28, a transmission mechanism 32, and a prop 30. Slots 34 and 36 are formed on the rolling shaft 38 and the fan 28 respectively for receive therein the transmission mechanism 32 so that the fan 28 can be rotated through the rotational kinetic energy transmitted by the transmission mechanism 32. The transmission mechanism 32 is a belt, a rope, or other elastic element. A hot-wind exit 40 is formed on the shell 24. The hot-wind exit 40 may be a plurality of holes or any other type of exit for exhausting hot air within the shell 24.
  • The fan is mounted on the [0023] prop 30 and is facing the shell 24. During the operation of the electrical device 20, the fan 28 is rotated in accordance with the rotation of the rolling shaft 38. Accordingly, the hot air is exhausted and the temperature within the shell 24 is reduced.
  • The rolling shaft is not reserved for the use of the cooling mechanism. For example, in an automatic document feeder (ADF) for a scanner, the rolling shaft is a part of the sheet-feeding mechanism. Referring to FIG. 3, an [0024] ADF 50 includes a body shell 52, a document-feeding path 54 formed on the bottom side of the body shell 52, and rollers 56, 58, 60, and 62 for urging the document sheet 64 to be moved in the feeding path 54. The document-feeding path 54 is formed by an inner shell 68 and an outer shell 70. The document-feeding path 54 further includes a scanning area 72, which is an opening formed on the bottom of the outer shell 70. A document 64 is urged by the rollers 56, 58, 60, and 62 to be moved in the document-feeding path 54. The document 64 enters the document-feeding path 54 from the entry 74 and leaves it from the outlet 76. The ADF 50 is mounted on a flatbed scanner 100 and the scanning area 72 is aligned to the reading unit (not shown) of the scanner 100. While the document 64 passes through the scanning area 72, it will be scanned by the scanner 100.
  • Because rollers are necessary for the ADF to transmit document, rolling shafts are necessary to provide rolling kinetic energy to the rollers. For example, [0025] rollers 58 and 62 are mounted on rolling shafts 78 and 80 respectively. During operation of the ADF 50, the rollers 56 and 60 are also rolling since they contact with the rollers 58 and 62 respectively. Accordingly, the document sheet 64 will be transmitted forwardly once it passes the rollers 56 and 58 or 60 and 62.
  • Referring to FIG. 4, the rotational kinetic energy of the rolling [0026] shafts 78 and 80 is provided by a motor 82 through the gear set 84. The ADF 50 further includes a PCB 86 connected to a power 88 by a wire 90. While the ADF 50 is operating, both the PCB 86 and the motor 82 will generate a considerable heat. Accordingly, a fan 92 is used to reduce the temperature within the body shell 52 of the ADF 50. In stead of using an additional motor, the fan 92 is connected to the rolling shaft 78 by a transmission mechanism 94 to obtain the rotational kinetic energy. The transmission mechanism 94 is a belt, a rope or other elastic element.
  • The present invention can not only be applied on the above-mentioned ADF, but also any other electrical device having a rolling shaft for a specified function. Since no additional motor is needed for the cooling mechanism of the present invention, the cost is reduced. Furthermore, the defect that an additional motor will further increase the temperature of the electrical device is avoided. Accordingly, the present invention is valuable for the industry. [0027]
  • While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures. [0028]

Claims (11)

What is claimed is:
1. An automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft, comprising:
a fan mounted within said electrical device; and
a transmission mechanism connected between said fan and said rolling shaft for transmitting rotational kinetic energy from said rolling shaft to said fan to rotate said fan for reducing the temperature of said high-temperature element.
2. An automatic cooling mechanism according to claim 1 wherein said transmission mechanism includes an elastic element.
3. An automatic cooling mechanism according to claim 2 wherein said elastic element is a belt.
4. An automatic cooling mechanism according to claim 2 wherein said elastic element is a rope.
5. An automatic cooling mechanism according to claim 1 wherein said electrical device further includes a shell structure for receiving therein said high-temperature element.
6. An automatic cooling mechanism according to claim 5 wherein said fan introduces air into said shell structure.
7. An automatic cooling mechanism according to claim 5 wherein the air filled within said shell structure is exhausted by said fan.
8. An automatic cooling mechanism according to claim 7 wherein said electrical device further includes a hot-wind exist.
9. An automatic cooling mechanism according to claim 8 wherein said hot-wind exist includes a plurality of holes formed on said shell structure.
10. An automatic cooling mechanism according to claim 1 wherein said electrical device is an automatic document feeder (ADF).
11. An automatic cooling mechanism according to claim 10 wherein said ADF includes a plurality of rollers mounted on said rolling shaft for feeding thereby a document.
US10/431,603 1999-10-06 2003-05-08 Automatic cooling mechanism for electrical device Abandoned US20030195071A1 (en)

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US09/413,504 US6638192B2 (en) 1999-10-06 1999-10-06 Automatic cooling mechanism for electrical device
US10/431,603 US20030195071A1 (en) 1999-10-06 2003-05-08 Automatic cooling mechanism for electrical device

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6638192B2 (en) * 1999-10-06 2003-10-28 Mustek Systems, Inc. Automatic cooling mechanism for electrical device
US7722491B2 (en) * 2003-11-19 2010-05-25 Oreck Holdings, Llc Power shaft including a belt retaining geometry

Citations (20)

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US2385152A (en) * 1944-09-08 1945-09-18 Texfan Company Ventilating or exhaust fan
US2875626A (en) * 1957-05-07 1959-03-03 Refrigeration Appliances Inc Dual belt tightener
US3672160A (en) * 1971-05-20 1972-06-27 Dae Sik Kim System for producing substantially pollution-free hot gas under pressure for use in a prime mover
US3712065A (en) * 1970-12-04 1973-01-23 Clevepak Corp Antipollution exhaust system for an internal combustion engine
US4252751A (en) * 1979-01-19 1981-02-24 Naomichi Shito Fan control system for cooling apparatus
US4531379A (en) * 1983-10-14 1985-07-30 Diefenthaler Jr Robert E Auxiliary power system for vehicle air conditioner and heater
US4601684A (en) * 1984-03-07 1986-07-22 Baltimore Aircoil Company, Inc. V-belt drive system for corrosive atmospheres
US4743739A (en) * 1986-02-20 1988-05-10 Tateishi Arthur K Oscillating louver electric fan heater
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US4972570A (en) * 1989-04-11 1990-11-27 Tateishi Art K Method of manufacturing an oscillating fan
US5016864A (en) * 1988-10-31 1991-05-21 Kabushiki Kaisha Toshiba Apparatus for feeding sheet material
US5318479A (en) * 1993-06-15 1994-06-07 George Lawroski Vacuum cleaner belt installation tool
US5386823A (en) * 1992-07-01 1995-02-07 The United States Of America As Represented By The Secretary Of The Air Force Open loop cooling apparatus
US5441391A (en) * 1994-01-05 1995-08-15 Patton Electric Company, Inc. Air propelling apparatus with fan shaft mounted on guards
US5745247A (en) * 1994-01-28 1998-04-28 Ricoh Company, Ltd. Image forming apparatus having a controlled fixing unit
US5871412A (en) * 1997-02-04 1999-02-16 Behr America, Inc. Technical field
US5951257A (en) * 1996-05-20 1999-09-14 Triangle Engineering Of Arkansas Inc. Easily serviceable fan with universal subframe assembly and tensionable guards
US6031721A (en) * 1997-11-19 2000-02-29 Intel Corporation Cooling fan for computing devices with split motor and fan blades
US6320745B1 (en) * 1999-10-06 2001-11-20 Mustek Systems, Inc. Cooling mechanism for electrical device having rolling shaft
US6638192B2 (en) * 1999-10-06 2003-10-28 Mustek Systems, Inc. Automatic cooling mechanism for electrical device

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385152A (en) * 1944-09-08 1945-09-18 Texfan Company Ventilating or exhaust fan
US2875626A (en) * 1957-05-07 1959-03-03 Refrigeration Appliances Inc Dual belt tightener
US3712065A (en) * 1970-12-04 1973-01-23 Clevepak Corp Antipollution exhaust system for an internal combustion engine
US3672160A (en) * 1971-05-20 1972-06-27 Dae Sik Kim System for producing substantially pollution-free hot gas under pressure for use in a prime mover
US4252751A (en) * 1979-01-19 1981-02-24 Naomichi Shito Fan control system for cooling apparatus
US4531379A (en) * 1983-10-14 1985-07-30 Diefenthaler Jr Robert E Auxiliary power system for vehicle air conditioner and heater
US4601684A (en) * 1984-03-07 1986-07-22 Baltimore Aircoil Company, Inc. V-belt drive system for corrosive atmospheres
US4743739A (en) * 1986-02-20 1988-05-10 Tateishi Arthur K Oscillating louver electric fan heater
US5016864A (en) * 1988-10-31 1991-05-21 Kabushiki Kaisha Toshiba Apparatus for feeding sheet material
US4875670A (en) * 1988-11-17 1989-10-24 Ncr Corporation Floating idler wheel arm assembly for a document transport
US4972570A (en) * 1989-04-11 1990-11-27 Tateishi Art K Method of manufacturing an oscillating fan
US5386823A (en) * 1992-07-01 1995-02-07 The United States Of America As Represented By The Secretary Of The Air Force Open loop cooling apparatus
US5318479A (en) * 1993-06-15 1994-06-07 George Lawroski Vacuum cleaner belt installation tool
US5441391A (en) * 1994-01-05 1995-08-15 Patton Electric Company, Inc. Air propelling apparatus with fan shaft mounted on guards
US5745247A (en) * 1994-01-28 1998-04-28 Ricoh Company, Ltd. Image forming apparatus having a controlled fixing unit
US5951257A (en) * 1996-05-20 1999-09-14 Triangle Engineering Of Arkansas Inc. Easily serviceable fan with universal subframe assembly and tensionable guards
US5871412A (en) * 1997-02-04 1999-02-16 Behr America, Inc. Technical field
US6031721A (en) * 1997-11-19 2000-02-29 Intel Corporation Cooling fan for computing devices with split motor and fan blades
US6320745B1 (en) * 1999-10-06 2001-11-20 Mustek Systems, Inc. Cooling mechanism for electrical device having rolling shaft
US6638192B2 (en) * 1999-10-06 2003-10-28 Mustek Systems, Inc. Automatic cooling mechanism for electrical device

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US6638192B2 (en) 2003-10-28
US20020049105A1 (en) 2002-04-25

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Effective date: 20051202

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Effective date: 20060119

AS Assignment

Owner name: MUSTEK SYSTEMS, INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, SUN;REEL/FRAME:017412/0382

Effective date: 19990920

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION