Single valve ready to use hose end sprayer
AssigneeHayes Products, LLC
InventorsDonald Shanklin, Ronald F. Englhard
Life of this patent
Estimating the term…
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.
Claims17
A chemical sprayer comprising a sprayer head assembly and a container that defines a cavity for storing a chemical to be sprayed;
- said sprayer head assembly comprising:
- a chemical passage that is in communication with said cavity, a lower portion of said chemical passage being defined at least in part by an elongated tubular member that extends into said cavity;
- a carrier fluid passage that is in communication with a carrier fluid source;
- a valve chamber that is in communication with said chemical and carrier fluid passages;
- a valve moveably positioned within said valve chamber at least partially defining a first passage and a second passage, said first passage is configured so as to be in communication with said lower portion of said chemical passage when said valve is in an open position, said second passage is configured so as to be in communication with said carrier fluid passage when said valve is in said open position, said first and second passages also configured so as to not be in communication with said lower portion of said chemical and carrier fluid passages when said valve is in a closed position;
- said valve further comprising at least one sealing portion positioned so as to block both the chemical and the carrier fluid passages when said valve is in said closed position such that said lower portion of said chemical passage is no longer in communication with said first passage;
- and
- wherein said assembly further includes a vent passage that is in communication with said cavity and said valve chamber, said valve being configured such that when said valve is in said closed position a surface of said at least one sealing portion prevents said cavity from being in communication with an atmospheric pressure source through said vent passage.
A chemical sprayer head assembly comprising:
- a container connection portion for connecting said sprayer head assembly to a container containing a chemical solution;
- a chemical passage located at least partially in said container connection portion, a lower portion of said chemical passage being defined at least in part by an elongated tubular member;
- a carrier fluid connection portion for connecting said sprayer head assembly to a carrier source;
- a carrier fluid passage located at least partially in said carrier fluid connection portion connection;
- a valve chamber that is in communication with said chemical and carrier fluid passages;
- a valve moveably positioned within said valve chamber at least partially defining a first passage and a second passage, said first passage is configured so as to be in communication with said chemical passage when said valve is in an open position, said second passage is configured so as to be in communication with said carrier fluid passage when said valve is in said open position, said first and second passages also configured so as to not be in communication with said chemical and carrier fluid passages when said valve is in a closed position;
- said valve further comprising at least one sealing portion positioned so as to block both the chemical and the carrier fluid passages when said valve is in said closed position such that said lower portion of said chemical passage is no longer in communication with said first passage;
- and
- wherein said assembly further includes a first vent passage that is in communication with said valve chamber and said valve further at least partially forms a second vent passage, said valve being configured such that when said valve is in said closed position said valve blocks said first vent passage.
Dependencies are inferred from the claim text.