Rodless cylinder device

Details Rodless cylinder device Rodless cylinder device

1996-10-11

1998-12-01

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

91 46, 92 88, 92153, H02K 4900, F01B 3110, F01B 2900

Patent

active

058443401

ABSTRACT:
In a rodless cylinder device, an inside moving unit is slidably inserted in a cylinder and an outside moving unit is slidably inserted on the cylinder, the inside and outside moving units being magnetically coupled. The inside moving unit has inner sliding guide rings on the two opposite ends with an inside magnet device disposed therebetween. A sealing ring or packing is provided between the inside magnet device and one of the inner sliding guide rings in such a manner that a grease retaining space is formed between the packing and the inner sliding guide ring. While the outside moving unit is moved together with the inside moving unit under the magnetic coupling force between the two moving units, the packing is lubricated by grease supplied from the grease retaining space, whereby the lubricating performance of the rodless cylinder is improved.

REFERENCES:
patent: 4354125 (1982-10-01), Stoll
patent: 4645182 (1987-02-01), Stoll
patent: 4674894 (1987-06-01), Heshmat
patent: 5050892 (1991-09-01), Kawai et al.
patent: 5279207 (1994-01-01), Takada et al.
patent: 5333535 (1994-08-01), Miyamoto et al.
Patent Abstracts of Japan, vol. 10, No. 304, 16 Oct. 1986.
Patent Abstracts of Japan, vol. 15, No. 155, 6 Feb. 1991.

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