Patent ID: 9400059
Filing Date: 2016-07-26
CPC Classification: F16K,Y10T

Claim Text:
1. A tube constriction valve comprising a valve body ( 1 ) with first and second opposite ends spaced apart in an axial direction and a tube guide extending through the valve body from the first end to the second end, at least one clamping bolt ( 2 ) mounted into an external surface of the valve body ( 1 ) between the first and second ends, the clamping bolt ( 2 ) being configured for movement transverse to the axial direction, so that an end of the clamping bolt ( 2 ) is selectively movable into the tube guide ( 7 ), at least one disk ( 4 ) adjustably mounted on the clamping bolt ( 2 ) external of the valve body ( 1 ) and fixable at selected positions along the clamping bolt ( 2 ) facing the external surface into which the clamping bolt ( 2 ) is mounted and an approximation sensor ( 3 ) mounted to the external surface of the valve body ( 1 ) into which the clamping bolt ( 2 ) is mounted and at a position so that a radial distance from the clamping bolt ( 2 ) to the approximation sensor ( 3 ) is less than a radial distance from the clamping bolt ( 2 ) to an outer periphery of the disk ( 4 ) and so that the approximation sensor ( 3 ) is facing the disk ( 4 ) along a moving direction of the clamping bolt ( 2 ), the approximation sensor being operative for measuring a distance between the approximation sensor ( 3 ) and the disk ( 4 ) at all rotational positions of the clamping bolt ( 2 ) relative to the valve body ( 1 ), the distance defining a position of the end of the clamping bolt ( 2 ) in the tube guide ( 7 ) of the valve body ( 1 ) based on a relative position of the disk ( 4 ) on the clamping bolt ( 2 ) and the distance between the approximation sensor ( 3 ) and the disk ( 4 ).