G - Physics – 01 – L
Patent
G - Physics
01
L
73/8
G01L 7/06 (2006.01)
Patent
CA 1122028
Abstract of the Disclosure A pressure sensitive indicating device (10) is disclosed. The device (10) includes a housing (12) defin- ing a primary chamber (26). The primary chamber (26) has a first end (28), a second end (30) and an axis (32) extend- ing between the two ends. A movable member (34, 62) is supported in the primary chamber (26) for motion therein. The movable member has a first side disposed in the primary chamber (26) and a second side disposed outside the primary chamber (26). A first aperture mechanism (118) provides fluid communication between the primary chamber (26) and the exterior of the housing (12). A coil spring (84) biases the movable member toward the first end of the primary chamber. An indicator mechanism (86, 208) is coupled to the movable member for motion therewith to indi- cate the position of the movable member within the primary chamber in response to fluid pressure applied to at least one of the sides of the movable member. The indicator means is visible from a viewing face (14) of the housing. The viewing face is viewed transversely to the primary chamber axis (32). A releasable locking means (152, 226) locks the movable member and the indicator mechanism against the biasing force of the spring (84) at a plurality of positions along the path of travel of the movable member toward the second end of the primary chamber. A release mechanism (168, 220) is provided for releasing the locking mechanism to allow the movable member to move toward the first end of the primary chamber under the biasing force of the biasing means. The release mechanism extends generally transverse to the axis of the primary chamber and is actuatable from the viewing face of the housing.
334576
Manguson Harold A.
Thomas Timothy J.
Barrigar & Moss
Donaldson Company Inc.
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