The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
Oct. 23, 2001
Yoshiaki Fujisawa, Nitta-machi, JP;
Takehiro Hasegawa, Nitta-machi, JP;
Yoshiaki Fujisawa, Nitta-machi, JP;
Takehiro Hasegawa, Nitta-machi, JP;
Sawafuji Electric Co., Ltd., Tokyo, JP;
Abstract
A vibration type compressor related to the present invention, in which a compressor main bodyis built into a gastight vesselincluding a yoke-a magnetic path memberformed from a column-shaped core pole-a permanent magnetarranged in the magnetic path, an electromagnetic coilwhich is arranged within an annular magnetic gapbetween the magnetic path membersby being supported by a mechanical vibration system to as to be able to vibrate and is wound around a lead plate to perform the connection treatment of a terminal thereof, a pistonconnected to the electromagnetic coiland a cylinder blockwhich closes the yoke-and in the interior of which is formed the cylinder portionhousing the pistoncharacterized in that the permanent magnetis formed from a neodymium magnet or a rare-earth magnet and in that the cylindrical permanent magnetis divided into four parts in the axial direction thereof, the four-part divided magnet being bonded and fixed to the side of the core pole-whereby the vibration type compressor is miniaturized and its efficiency is increased.