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. 21, 1989
Filed:
Mar. 09, 1987
Applicant:
Inventors:
James F Pitzen, St. Paul, MN (US);
Gerald E Drake, Oakdale, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, Saint Paul, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 90 ; 604224 ; 401145 ; 401172 ; 401184 ; 222207 ; 222327 ; 222390 ; 222213 ;
Abstract
A dispenser for liquids including a cartridge containing a liquid, a nozzle, and a hollow flexible bladder between the cartridge and the nozzle. An assembly can be manually rotated to provide a high mechanical advantage and incrementally drive a piston through the cartridge to thereby fill the bladder with liquid from the cartridge and discharge any plug of solidified material (e.g., diluted phosphoric acid) that may be present in the nozzle; and manually operated button can be pressed to quickly and controllably collapse the bladder to thereafter dispel liquid within the bladder through the nozzle.