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:
Oct. 13, 1981
Filed:
Jun. 15, 1978
Kenneth L Miller, Indianapolis, IN (US);
Other;
Abstract
A material dispenser for dispensing a flowable material from a non-pressurized reservoir having a bore therethrough. A resilient pinch-off tube is removably fitted within the bore. The flowable material reservoir is connected to one end of the tube. At least one dispensing nozzle or needle is coupled to the other end of the tube. Within the dispenser is a mechanism for selectively squeezing the tube to force selected amounts of the flowable material out the needle, and then to draw material from the reservoir into the tube to fill the tube and/or any residual amount of the material in the needle back away from the distal end of the needle thereby to eliminate dripping. Connected to the squeezing mechanism is a control system for sequencing the squeezing operation to perform the method of the invention which includes the steps of filling the tube with material, isolating a portion of the material in the tube from the reservoir, dispensing a portion of the isolated material, and drawing material from the reservoir into the tube to fill the tube and/or the remaining portion of the isolated material in the needle back away from the distal end of the needle.