Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
265 words
l. Apparatus for dispensing of at least two different fluid compositions, said apparatus comprising: a cartridge having therein plural separate chambers for containing separate fluid compositions to be dispensed; a neck portion provided at a discharging first end of said cartridge; plural separate passageways extending through said neck portion, each said passageway opening into a separate respective said chamber, the arrangement being such that the simultaneous application of pressure to the fluid compositions each in said separate chamber causes, in cooperation with a back pressure from the restriction of said passageways, compression of the fluid compositions, and thus causes the fluid compositions to be extruded in a predetermined ratio through the respective said passageways; and means for controlling the flow of the fluid compositions through the respective said passageways, for preventing run-on of the fluid compositions through said respective passageways due to decompression of the fluid compositions upon removal of the pressure, and thereby for preventing dispensing of the fluid compositions through said respective passageways in a ratio other than said predetermined ratio, said controlling means comprising a valve member having therethrough plural passage portions, said valve member being mounted within said neck portion for movement with respect thereto between an open first position, whereat said passage portions are aligned with respective said passageways, thereby permitting extrusion of the fluid compositions through said passageways in said predetermined ratio, and a closed second position, whereat said passage portions are out of alignment with said respective passageways and said passageway are blocked by said valve member, thereby preventing any flow of the fluid compositions through said passageways.
Claim 2
Dependent Claim
19 words
Apparatus according to claim I, wherein said chambers have respective volumes selected to achieve extrusion at said predetermined ratio.
Claim 3
Dependent Claim
21 words
Apparatus according to claim I or claim 2, wherein said neck portion extends forwardly from said first end of said cartridge.
Claim 4
Dependent Claim
50 words
Apparatus according to claim I, claim 2 or claim 3, further comprising mixing and dispensing means connected to said neck portion for receiving the plural fluid compositions extruded through the respective said passageways, for mixing the plural fluid compositions to form a mixed composition, and for dispensing said mixed composition.
Claim 5
Dependent Claim
27 words
Apparatus according to claim 4, wherein said mixing and dispensing means comprise a nozzle structure adapted for removable connection to an outer surface of said neck portion.
Claim 6
Dependent Claim
78 words
Apparatus according to claim 5, wherein said nozzle structure comprises a nozzle member positioned at the discharge end of said neck portion and having therein a fixed mixing element capuble of achieving said mixing solely due to said pressure of extrusion of the fluid compositions, and a flanged coupling fitting over a portion of said nozzle member and threaded onto said outer surface of said neck portion, thereby holding said nozzle member in position against said neck portion.
Claim 7
Dependent Claim
28 words
Apparatus according to any one of claims I to 7, wherein said valve member is mounted in said neck portion for rotation between said open and closed positions.
Claim 8
Dependent Claim
58 words
Apparatus according to claim 7, wherein said neck portion includes an enlarged block portion having therethrough an opening transversely interrupting said plural passageways, and said valve member includes a stem portion rotatably fitted within said opening, said passage portions comprising parallel holes extending through said stem portion in directions transverse to the rotational axis of said stem portion.
Claim 9
Dependent Claim
13 words
Apparatus according to claim 8, wherein said stem portion has a cylindrical configuration.
Claim 10
Dependent Claim
50 words
Apparatus according to claim 8 or claim 9, wherein said valve member further includes a head portion integral with a first end of said stem portion at a location exterior of said block portion and having a configuration enabling engagement thereof by a tool for rotation of said valve member.
Claim 11
Dependent Claim
39 words
Apparatus according to claim 10, further comprising means on said head portion for indicating the orientation of said holes and thereby for providing a visual indication of whether said valve member is in said open or said closed position.
Claim 12
Dependent Claim
48 words
Apparatus according to any one of claims 8 to 11, wherein a second end of said stem portion has therein a groove at a location exterior of said block portion, and further comprising lock means fitting within said groove for retaining said valve member within said block portion.
Claim 13
Dependent Claim
30 words
Apparatus according to any one of claims I to 12, wherein said plural separate chambers comprise a cylindrical first chamber and an annular second chamber coaxially surrounding said first chamber.
Claim 14
Dependent Claim
27 words
Apparatus according to any one of claims 1 to 13, wherein first and second chambers respectively contain first and second fluid composition which cure when mixed together.