Weight supporting apparatus

Details Weight supporting apparatus Weight supporting apparatus

1994-10-03

1997-12-23

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

318611, 318135, 7447901, 108 43, 248661, H02K 3318, B23Q 138

Patent

active

057010412

ABSTRACT:
A weight supporting apparatus supports the weight of a structure required to have very high surface precision, without affecting the surface precision of the structure. The weight support apparatus includes a driving unit for moving a driven body in the direction of gravity with respect to a base, and a supporting unit for supporting the weight of the driven body at a position after being driven, wherein the driving unit and supporting unit are so arranged that the drive force of the driving unit and the support force of the supporting unit are on the same axis.

REFERENCES:
patent: 4798985 (1989-01-01), Chitavat
patent: 5040431 (1991-08-01), Sakino et al.
patent: 5184055 (1993-02-01), Ohishi et al.
patent: 5280677 (1994-01-01), Kubo et al.
patent: 5479145 (1995-12-01), Kalsi
Patent Abstract of Japan, vol. 10, No. 367, published Dec. 9, 1986.
English Abstract of Japanese Patent No. 61-161950, published Jul. 22, 1986.
Patent Abstracts of Japan, vol. 10, No. 73, published Mar. 22, 1986.
English Abstract of Japanese Patent No. 60-217033, published Oct. 30, 1985.
Patent Abstract of Japan, vol. 17, No. 694, published Dec. 17, 1993.
English Abstract of Japanese Patent No. 5-237787, published Sep. 17, 1993.

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