Dosing gun, in particular high-pressure dosing gun
OwnerWalter Westenbergerinventor
Life of this patent
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Abstract
A dosing gun (500) comprising a revolving valve element (518), arranged fixedly in a first casing (506) which is immovably connected with the gun housing (502). The first casing (506) has a second spring-loaded casing (544) linked to it in a mobile way, which contains a hollow cylinder (514) having on its frontal part valve seats (542, 554). The dosing gun (500) can operate with or without a supply of compressed air.
Claims31
In a dosing gun for spraying a medium such as polishing paste comprising a housing, a cartridge element held in said housing, a valve body, a valve seat, a spring element, means defining a first working chamber between said valve seat and said valve body, said valve body and said valve seat being movable relative to one another against the force of said spring element if an adequate pressure is generated by said medium in said first working chamber between said valve seat and said valve body, and a nozzle;
- the improvement comprising a first casing, said valve body being mounted detachably on said first casing, said first casing extending from one of said cartridge element and said housing, means defining a hollow cylinder movable relative to said first casing, said valve seat being formed in the frontal part of said hollow cylinder, and a second casing operatively connected to said means defining a hollow cylinder and movable against said spring element.
A dosing gun for spraying a medium such as polishing paste comprising a housing, a cartridge element held in said housing, a valve body in said housing, a spring element, said valve body being movable against the force of said spring element, a valve seat, said valve body being at a distance from or in contact with said valve seat, a nozzle and a first cap nut holding said nozzle, said nozzle having a contact collar in contact on the inside with said first cap nut;
- the improvement in which said nozzle is held by said first cap nut so as to be rotatable and axially movable against the force of said spring element.
In a dosing gun for spraying a medium such as a polishing paste comprising a housing, a cartridge element extending from the housing, a spring element, a valve body and an associated valve seat, means defining a first working chamber between said valve seat and said valve body, said valve body and said valve seat being movable relative to one another against the force of said spring element if an adequate pressure is generated by said medium in said first working chamber, and a nozzle,
- the improvement in which said dosing gun further comprises a hollow guide cylinder surrounding at least some areas of said valve body, said valve body and said hollow guide cylinder being movable relative to one another, a valve element which includes said valve seat, said valve element being positioned between said hollow guide cylinder and said nozzle, means defining a further working chamber, and means for supplying compressed air to said further working chamber to move said valve body relative to said valve element.
Dependencies are inferred from the claim text.