Work holders – Relatively movable jaws – Jaw features
Patent
1989-12-21
1990-09-25
Lee, John D.
Work holders
Relatively movable jaws
Jaw features
350 9610, 269 20, 269 35, 269287, G02B 626, G02B 600, B23Q 300, B23Q 308
Patent
active
049588990
ABSTRACT:
A moving optical fiber (10) is guided in its motion by an annular guide apparatus (40) which receives the optical fiber (10) within an inner bore (66) and stabilizes its transverse position as it moves longitudinally. The guide (40) has a plurality of gas jets extending into the inner bore (66) that create a cushion of gas to maintain the position of the optical fiber (10) in the center of the bore (66), without the need for any physical contact between the bore (66) and the optical fiber (10). The annular guide (40) is preferably formed from a housing (42) that defines a gas plenum (74) and a flow control plate (52) that fits to the housing (42) and has circumferentially spaced, radially extending gas flow passages (54) etched therein. A gas flow introduced into the plenum (74) from an external source is distributed to the gas flow passages (54) and thence to the inner bore (66) to prevent the optical fiber (10) from physically contacting the guide (40).
REFERENCES:
patent: 3436071 (1969-04-01), Petruccelli
patent: 4607485 (1986-08-01), Stahlecker
patent: 4796970 (1989-01-01), Reeve et al.
patent: 4829758 (1989-05-01), Gilhaus
patent: 4852790 (1989-08-01), Karlinski
Barns Stephen
Denson-Low W.
Hays R. A.
Heald R. M.
Hughes Aircraft Company
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