B - Operations – Transporting – 67 – D
Patent
B - Operations, Transporting
67
D
B67D 7/08 (2010.01) B05B 11/00 (2006.01)
Patent
CA 2058374
Ref. No.: P 40 41 136.2 A 39 Abstract In a metering and spray pump for liquid, low-viscosity and pasty substances, an elastic bellows (3) is arranged between two plastic housing parts (1, 2) that are telescopingly movable relative to one another, connecting them, wherein it [the bellows], acting as a discharge valve (18), has, at one end, a valve annular wall (15) that surrounds the generated surface (17) of an annular wall (8) made in one piece with the first housing part (1) in a sealing manner and such that it can be lifted off. As a suction valve (58), said bellows (3) has, at its other end, a valve annular wall (54) which is in sealing and separable contact with the generated surface (43) of a valve seat (42) made in one piece with the second housing part (2) such that it can be lifted off, wherein the medium to be pumped is drawn into the bellows (3) through the said valve seat. To guarantee high reliability of operation, especially [good] quality of closing at weak valve opening forces, where the quality of closing can be tested even in the dry state, with the smallest possible number of simple and easy-to-assemble individual parts, the valve annular wall (15) of the discharge valve (18) and the valve angular wall (54) of the suction valve (58), which [valve annular wall (54)] is provided with a closed front wall (57), are each in contact with conical or hemispherical generated surfaces (17), 43), wherein both valve annular walls (15, 54) are connected to the bellows (3) both radially elastically and elastically movably in the axial direction. (Figure 1) B:23710. 1
Andris Raimund
Macrae & Co.
Raimund Andris G.m.b.h. & Co. Kg
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