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:
Jun. 17, 2003
Filed:
Apr. 03, 2000
Donald Shanklin, Fullerton, CA (US);
Ronald F. Englhard, Mission Viejo, CA (US);
Hayes Products, LLC., Buena Park, CA (US);
Abstract
The present invention relates to a chemical sprayer that includes a chemical passage, a carrier fluid passage, a vent passage, a valve chamber and a valve. The valve is moveably positioned within the valve chamber and defines at least partially a first passage and a second passage that can be selectively placed in communication with the chemical and chemical fluid passages. The valve also includes one or more seal portions positioned on the valve so as to block [both] a vent passage, the chemical or the carrier fluid passages when said valve is in the closed position. The second passage also preferably forms at least in part an outlet of the sprayer head assembly. A suction generating surface is also preferably defined by the valve.