| US 7,578,665 B2 | ||
| Drive transmission mechanism between two or more rotary shafts and oil-free fluid machine equipped with the mechanism | ||
| Shiro Tanigawa, Tama (Japan); Takamitsu Nakayama, Yokohama (Japan); and Yuki Takada, Yokohama (Japan) | ||
| Assigned to Anest Iwata Corporation, Yokohama-Shi (Japan) | ||
| Filed on Nov. 28, 2007, as Appl. No. 11/946,218. | ||
| Claims priority of application No. 2006-323960 (JP), filed on Nov. 30, 2006. | ||
| Prior Publication US 2008/0181804 A1, Jul. 31, 2008 | ||
| Int. Cl. F01C 1/18 (2006.01); F03C 2/00 (2006.01) | ||
| U.S. Cl. 418—206.1 [418/206.6; 417/410.1; 417/420; 310/103; 464/29] | 6 Claims |
| 1. A drive transmission mechanism for transmitting torque between two or more parallel rotary shafts a first one of the parallel
rotary shafts having a coupling affixed thereto for directly coupling the first shaft to a motor drive shaft, said drive transmission
mechanism comprising:
at least one magnetic drive disk affixed to each of the rotary shafts, each magnetic drive disk being comprised of a magnet
carrier disk made of nonmagnetic material and having a plurality of magnets arranged on the magnet carrier disk circumferentially
at equal spacing, wherein the at least one magnetic drive disk affixed to the first one of the parallel rotary shafts partially
overlaps the at least one magnetic drive disk affixed to another of the parallel rotary shafts; and
synchronization gears attached to the rotation shafts respectively to mesh with one another, at least one of the synchronization
gears being made of plastic material;
whereby torque transmission between the rotary shafts is carried out in two ways, via the magnetic drive disks without contact
between the magnets and via the synchronization gears meshing with one another.
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