FLOW CONTROL VALVE
First Claim
1. A flow control valve comprising:
- a light emitting section for emitting light;
a light receiving section disposed so as to face the light emitting section, for detecting an amount of light received from the light emitting section; and
a valve element for opening and closing a passage;
wherein the valve element or a light blocking section secured to the valve element moves in a transverse direction between the light emitting section and the light receiving section, as the passage is opened or closed, the amount of light received by the light receiving section from the light emitting section varies in accordance with a position of the valve element, and the position of the valve element is detected based on the amount of light received by the light receiving section.
3 Assignments
0 Petitions
Accused Products
Abstract
A flow control valve includes a light emitting section for emitting light; a light receiving section disposed so as to face the light emitting section, for detecting the amount of light received from the light emitting section; and a valve element for opening and closing a passage, wherein the valve element or a light blocking section secured to the valve element moves in a transverse direction between the light emitting section and the light receiving section as the passage is opened or closed, an amount of light received by the light receiving section from the light emitting section varies in accordance with the position of the valve element, and a position of the valve element is detected based on the amount of light received by the light receiving section.
-
Citations
7 Claims
-
1. A flow control valve comprising:
-
a light emitting section for emitting light; a light receiving section disposed so as to face the light emitting section, for detecting an amount of light received from the light emitting section; and a valve element for opening and closing a passage; wherein the valve element or a light blocking section secured to the valve element moves in a transverse direction between the light emitting section and the light receiving section, as the passage is opened or closed, the amount of light received by the light receiving section from the light emitting section varies in accordance with a position of the valve element, and the position of the valve element is detected based on the amount of light received by the light receiving section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification