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:
Sep. 06, 1977
Filed:
Jul. 06, 1976
Nevitt M Louder, Verona, PA (US);
Fisher Scientific Company, Pittsburgh, PA (US);
Abstract
The dispensing apparatus includes a syringe having a plunger therein and appropriate inlet and discharge openings associated therewith. Two cams are positioned in spaced relationship with a connecting rod mounted to an eccentric of each cam and pivotally to the plunger in the syringe. Motor elements cause rotation of one of the cams with the second cam acting as the fixed pivot point to move the plunger through a first distance. Rotation of the second cam with the first cam acting as the fixed pivot point causes the plunger to move through a second distance. Two liquid volumes are, therefore, dispensed from a single syringe in which one-half cycle of rotation of either cam acts to fill the syringe and the other half cycle acts to discharge the syringe. A multistation dispenser is provided by using a plurality of syringes and connecting two such cam assemblies to a cross bar which causes simultaneous reciprocation of the various plungers associated with the plurality of syringes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile