Battery operated spray head retrofittable onto existing pump spray containers and producing substantially continuous spray
OwnerSteven Sweeton, Linn Wanbaugh +1inventors
InventorsSteven Sweeton, Linn Wanbaugh, David DeJong
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Abstract
A battery operated spray pump includes a piston pump having a double wave cam which is pushed by a pair of rotating cam pushers coupled to the electric motor via a gear transmission. The double wave cam has an unequal duty cycle, i.e. takes more time to expel fluid from the piston cylinder than it takes to fill the cylinder. The cam pushers rotate at a speed which, in conjunction with the duty cycle of the cam, produces a low pressure nearly constant stream.
Claims23
A battery operated liquid sprayer for use with a fluid container, said sprayer comprising:
- a piston pump;
- an electric motor;
- and
- a transmission coupling said electric motor to said piston pump, said transmission including a double wave cam, wherein:
- said piston pump has an intake cycle in which fluid is drawn from the fluid container and a spray cycle in which fluid is expelled from said pump,
- said intake cycle and said spray cycle being of unequal duration.
A battery operated liquid sprayer for use with a fluid container, said sprayer comprising:
- a pump;
- an electric motor;
- and
- a transmission coupling said electric motor to said pump, wherein
- said pump has an intake cycle in which fluid is drawn from the fluid container and a spray cycle in which fluid is expelled from said pump,
- said intake cycle and said spray cycle each occur between 2 and 10 times per second.
A battery operated liquid sprayer for use with a fluid container, said sprayer comprising:
- a piston pump;
- an electric motor;
- and
- a transmission coupling said electric motor to said pump, wherein
- said pump delivers a substantially constant stream at a pressure between 5 and 200 pounds per square inch.
Dependencies are inferred from the claim text.