Fluid pressure servomotor

Details Fluid pressure servomotor Fluid pressure servomotor

1987-01-23

1989-01-03

Michalsky, Gerald A.

Expansible chamber devices

With guide or seal on cylinder end portion for piston or...

Non-metallic seal means between piston or member and end...

277205, F15B 910

Patent

active

047948507

ABSTRACT:
A fluid pressure servomotor including a housing, a partition wall arranged in the housing, a center hole formed in the partition wall, a hub member having a cylindrical portion, a ring bearing for axially slidably guiding the cylindrical portion and fitted in the hole. A sealing member is fitted in the hole and includes a sealing portion hermetically contacted with the partition wall and a lip portion hermetically contacted with the cylindrical portion. A retainer is provided for retaining the sealing member and the ring bearing between the partition wall and the cylindrical portion. The sealing member and the ring bearing are engaged with each other by engagement of a groove and a projection formed thereon, respectively, so that the sealing member and the cylindrical portion are maintained in a co-axial relationship.

REFERENCES:
patent: 4053166 (1977-10-01), Domkowski
patent: 4169604 (1979-10-01), Heathcott
patent: 4472997 (1984-09-01), Ohmi
patent: 4587885 (1986-05-01), Boehm et al.
patent: 4590845 (1986-05-01), Tateoka et al.
patent: 4594937 (1986-06-01), Meynier et al.
patent: 4598625 (1986-07-01), Belart
patent: 4619185 (1986-10-01), Mori et al.

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