A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
207/58, 47/9
A01G 7/00 (2006.01)
Patent
CA 1251327
VACUUM/GRAVITY FEED CONTACT HERBICIDE APPLICATOR ABSTRACT OF THE DISCLOSURE A vacuum/gravity feed contact herbicide appli- cator includes a wicking head and an elevated container for gravity feeding herbicide liquid via an internal generally vertical conduit into the head. The container and conduit are sealed to maintain a partial vacuum. The wicking head is structured so that the liquid rises in a generally vertical internal passageway to a level limit by the partial vacuum such that the liquid does not overflow from an outlet opening of the passageway in an upper side of the wicking head. A first wicking material is disposed in the passageway for drawing the liquid upward through the outlet opening for transfer to a second wicking material surrounding the wicking head and covering the outlet opening. The wicking material is non-woven fibrous rayon fabric material impervious to air when saturated but pervious when unsaturated, to control passage of air into the wicking head and spill- age of liquid from same. The conduit and passageway communicate through a single internal opening con- stricted so that the liquid and air interferingly coun- terflow therethrough to regulate the flow of air back into the container and thereby the flow of liquid into the wicking head passageway.
508135
Kropf Walter K.
Oyen Wiggs Green & Mutala Llp
Smucker Lee A.
LandOfFree
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