Dust excluding device
AssigneeMitutoyo Mfg. Co., Ltd.
InventorSeiji Sakagami
Life of this patent
Estimating the term…
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.
Claims6
A dust excluding device comprising:
- 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, at least at localities brought into contact with the abutting contact portions of the shield members, 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.
Dependencies are inferred from the claim text.