Lubrication – Systems – With measuring or metering value system
Patent
1985-04-22
1986-09-02
Smith, Leonard E.
Lubrication
Systems
With measuring or metering value system
417349, 91191, F16N 2700
Patent
active
046090738
ABSTRACT:
A progressive distributor 1 for lubricants is provided, where the lubricant is fed in under pressure via a joint channel 20 and then discharged in several discharge channels and ports 25 to 28. At least two successively disposed piston elements 4, 5 are each provided with a piston 8 in each case shiftable between two end positions in a cylinder bore 7 and provided with control grooves 9, 10. The piston subdivides the cylinder bore 7 into two outer metering chambers 17, 18 and at least one intermediately disposed control chamber 19. The piston elements 4, 5 are connected to each other such that the pistons 8 are shifted successively and that lubricant is transported from a metering chamber 17, 18 via a control chamber 19 to an output 25 to 28. In order to damp the piston 8 of the progressive distributor 1 in the respective end positions and in order to provide a forced circulation of the lubricant with a flushing of the connecting channels 21 to 24 and the metering chambers 17, 18 and thus in order to ensure a safe ventilation, each metering chamber 17, 18 is provided with two separate from each other channels 21, 22, 23, 24 which form an input feed channel 21, 22 and an output discharge channel 23, 24. The input feed channel 21, 22 is connected permanently to the metering chamber 18, whereas the output channel 23, 24 can be separated from the metering chamber with a piston surface under formation of a control edge 29.
REFERENCES:
patent: 3467222 (1969-09-01), Gruber
patent: 3631879 (1972-01-01), Larson
patent: 3921760 (1975-11-01), Brownrigg
patent: 4180090 (1979-12-01), Bemba
Kasper Horst M.
Smith Leonard E.
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