Patent ID: 11931752
Assignee: SUZHOU HSEN-MEZ AUTOMATION CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 15:
16. The non-contact precision pneumatic injection valve of claim 15, wherein the adjustable stroke limiting component comprises:
a thread-toothed column threadedly engaging the upper end of the cylinder;
a spring-limiting column disposed inside and fixedly attached to the thread-toothed column, the spring-limiting column comprising a first protrusion ring;
a spring column axially movably disposed inside the spring-limiting column and comprising a second protrusion ring that is disposed lower than the first protrusion ring, a lower end of the spring column defining a stroke of the needle; and
a compression spring, one end of the compression spring fixedly engaging the first protrusion ring and the other end of compression spring fixedly engaging the second protrusion so that the compression spring keeps the spring column at least partially inside the spring-limiting column.