The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2024
Filed:
Oct. 18, 2021
Suzhou Hsen-mez Automation Co., Ltd., Suzhou, CN;
Xingguo Wu, Suzhou, CN;
Gang Li, Suzhou, CN;
Suzhou Hsen-mez Automation Co., Ltd., Jiangsu, CN;
Abstract
A non-contact precision pneumatic injection valve includes a cylinder, a needle disposed inside the cylinder, and an adjustable stroke limiting component. The adjustable stroke limiting component includes a thread-toothed column threadedly engaging an upper end of the cylinder; a spring-limiting column disposed inside and fixedly attached to the thread-toothed column, the spring-limiting column having a first protrusion ring; a spring column axially movably disposed inside the spring-limiting column and having a second protrusion ring, a lower end of the spring column defining a stroke of the needle; and a spring. One end of the spring fixedly engages the first protrusion ring and the other end of the spring fixedly engages the second protrusion so that the spring keeps the spring column at least partially inside the spring-limiting column. The spring biases the lower end of the spring column toward the needle.