Patents Assigned to Pacific Engineering Co., Ltd.
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Patent number: 5787929Abstract: A four-way change-over valve for an air conditioner has first to fourth piping holes sequentially arranged on a concentric circle at a predetermined pitch in a planar portion of a valve seat formed in a thick disk shape as one portion of a valve case. The change-over valve also has a rotary valve rotatably arranged on an upper face of this valve seat and having at least one communicating groove for independently connecting two adjacent piping holes of the four piping holes to each other. Cooling and heating operations of the air conditioner are switched by rotating the rotary valve. A service valve with a four-way change-over valve for an air conditioner is characterized in that both service valves on liquid and gas sides of a refrigerant circuit are integrated with each other and are further integrated with the four-way change-over valve as one valve unit with one valve seat as a common valve seat.Type: GrantFiled: June 6, 1995Date of Patent: August 4, 1998Assignee: Pacific Engineering Co., Ltd.Inventor: Toshinori Iwata
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Patent number: 5745024Abstract: For providing a fuse element for slow-blow fuses which uses no separate endothermic member, a fuse element for slow-blow fuses in which wings are formed on both sides of slender element portions connecting top ends of a pair of female terminals by way of narrow and short bridges by punching out of a single electrically conductive sheet.Type: GrantFiled: September 26, 1996Date of Patent: April 28, 1998Assignee: Pacific Engineering Co., Ltd.Inventors: Manabu Ohta, Akihiko Shimizu
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Patent number: 5732739Abstract: A four-way change-over valve for an air conditioner has first to fourth piping holes sequentially arranged on a concentric circle at a predetermined pitch in a planar portion of a valve seat formed in a thick disk shape as one portion of a valve case. The change-over valve also has a rotary valve rotatably arranged on an upper face of this valve seat and having at least one communicating groove for independently connecting two adjacent piping holes of the four piping holes to each other. Cooling and heating operations of the air conditioner are switched by rotating the rotary valve. A service valve with a four-way change-over valve for an air conditioner is characterized in that both service valves on liquid and gas sides of a refrigerant circuit are integrated with each other and are further integrated with the four-way change-over valve as one valve unit with one valve seat as a common valve seat.Type: GrantFiled: June 6, 1995Date of Patent: March 31, 1998Assignee: Pacific Engineering Co., Ltd.Inventor: Manabu Ota
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Patent number: 5268665Abstract: A resistor device for blower motor comprising one plate of PTC element having two side surfaces and a plurality of electrodes disposed on at least one of the two side surfaces. A plurality of different resistance values can be obtained from the one plate of PTC element, which makes it possible to realize a small and compact structure for the resistor device.Type: GrantFiled: November 20, 1991Date of Patent: December 7, 1993Assignee: Pacific Engineering Co., Ltd.Inventor: Murakami Iwao
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Patent number: 5218336Abstract: A resistor device for blower motor contains a plurality of PTC element plates having both side surfaces and disposed side by side substantially in a same plane. Each PTC element has an electrode formed on each of said both side surfaces thereof. The device has a plurality of terminal plates sandwiching the PTC element plates from the both side surfaces thereof.Type: GrantFiled: November 20, 1991Date of Patent: June 8, 1993Assignee: Pacific Engineering Co., Ltd.Inventor: Iwao Murakami
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Patent number: 4430633Abstract: A fuse comprising a casing, a fusible element disposed within the casing and a member made of ceramics mounted to the fusible element, the fusible portion of the fusible element being situated within a recess formed in the member.Type: GrantFiled: April 16, 1981Date of Patent: February 7, 1984Assignee: Pacific Engineering Co., Ltd.Inventor: Masashi Ebi
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Patent number: 4219793Abstract: A fuse comprises a slender tube, a fuse element installed therein and terminals attached to both ends of the tube, wherein said fuse element being characterized by a plate substance having supporting sections extended respectively from each end of a fusing section, said supporting sections connected electrically to each terminal and said fusing section being bent at least at one part thereof.Type: GrantFiled: January 3, 1978Date of Patent: August 26, 1980Assignee: Pacific Engineering Co., Ltd.Inventor: Isao Kawamura
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Patent number: D375940Type: GrantFiled: February 28, 1995Date of Patent: November 26, 1996Assignee: Pacific Engineering Co., Ltd.Inventors: Akihiko Shimizu, Manabu Ota
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Patent number: D394843Type: GrantFiled: July 17, 1996Date of Patent: June 2, 1998Assignee: Pacific Engineering Co., Ltd.Inventors: Manabu Ohta, Akihiko Shimizu