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. 01, 1977
Filed:
Mar. 18, 1976
Julius Theodore Johnson, Cedar Rapids, IA (US);
Other;
Abstract
Sampling apparatus for periodically withdrawing small samples of liquid flowing through a pipe. The apparatus embodies an intake passage communicating with a T-section in the pipe. Liquid in the intake passage is pumped by a diaphragm which is pulsed pneumatically at periodic intervals. A check valve in the intake passage has one end projecting into the diaphragm chamber and is pushed positively by the diaphragm to intake port-closing position. A second passage communicating with the intake passage has a pop valve which opens under the diaphragm-created pressure after the check valve closes. Each periodic sample is collected from the latter passage in a plastic bag or other container. The apparatus can be washed and sanitized while on line by hose and coupling unit placed on the apparatus.