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:
Dec. 21, 1982
Filed:
Oct. 06, 1980
Alfred Heinzl, Munich, DE;
Heinz Stadler, Munich, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A device for pneumatically scanning the level of liquid in a container, such as small housings for electronic components which are to be filled with casting resin, has a pneumatic scanning nozzle disposed above the component housing for directing an extremely low pressure air stream at the liquid surface in the housing. The nozzle has a branch conduit leading to a piston movable to actuate a proximity switch for providing a signal to cease the supply of liquid to the container. When a pre-determined liquid level is attained in the container, the back pressure through the conduit moves the piston against a spring bias to actuate the proximity switch. The liquid level is thus determined in a contact-free manner so that the measuring system remains untouched by the casting resin.