Dust excluding device

Details Dust excluding device Dust excluding device

1981-05-29

1983-03-15

Hartary, Joseph W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 12, 277DIG4, 277DIG7, 308 35, F16J 1516

Patent

active

043765432

ABSTRACT:
A dust excluding device for a linear scale type measuring instrument which comprises; flexible shield members disposed at opposite sides of an opening formed in a hollow casing along a line of movement of a movable member and having the forward ends thereof being brought into abutting contact with each other; and a neck adapted to locally push open the abutting contact portions of the shield members, for imparting a displacement of the movable member at the outside of said hollow casing to the interior of said hollow casing through said opening; characterized in that the end portions of said neck in the moving directions thereof are each formed into a letter `V` shape, the tip of which obliquely recedes from inside to outside of said hollow casing.

REFERENCES:
patent: 2303438 (1942-12-01), Cornelius
patent: 3428272 (1969-02-01), Feder
patent: 4057258 (1977-11-01), Ernst

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