US 11,898,695 B2
Progressive distributor for lubricant
Dieter Hess, Ludwigshafen (DE); Juergen Kreutzkaemper, Waibstadt-Daisbach (DE); Markus Mandera, Leimen (DE); Andreas Schoenfeld, Sankt Leon-Rot (DE); Stefan Schuermann, Walldorf (DE); and Dennis Zahn, Karlsdorf-Neuthard (DE)
Assigned to SKF LUBRICATION SYSTEMS GERMANY GMBH, Walldorf (DE)
Filed by SKF LUBRICATION SYSTEMS GERMANY GMBH, Walldorf (DE)
Filed on Mar. 2, 2021, as Appl. No. 17/189,656.
Claims priority of application No. 102020204553.4 (DE), filed on Apr. 8, 2020.
Prior Publication US 2021/0317949 A1, Oct. 14, 2021
Int. Cl. F16N 25/00 (2006.01)
CPC F16N 25/00 (2013.01) 11 Claims
OG exemplary drawing
 
1. A progressive distributor for lubricant comprising a housing block,
wherein the housing block includes:
a lubricant inlet bore via which lubricant is introducible into the progressive distributor,
a first outlet bore and a second outlet bore via which a metered quantity of lubricant is dispensable to a consumer connected to the respective lubricant outlet bore,
a first piston bore, a second piston bore and a third piston bore, each of the first, second and third piston bores having an inlet opening in fluid communication with the inlet bore and a first outlet opening in fluid communication with the first outlet bore and a second outlet opening in fluid communication with the second outlet bore,
a first connecting bore and a second connecting bore connecting the first piston bore to the second piston bore,
a third connecting bore and fourth connecting bore connecting the second piston bore to the third piston bore,
a first metering piston in the first piston bore, the first metering piston being slidable between a first position in which the inlet opening of the first piston bore is connected to the first outlet bore and a second position in which the inlet opening of the first piston bore is connected to the second outlet bore,
a second metering piston in the third piston bore, the second metering piston being slidable between a first position in which the inlet opening of the third piston bore is connected to the first outlet bore and a second position in which the inlet opening of the third piston bore is connected to the second outlet bore, and
a dummy piston fixed in the second piston bore and permanently blocking the inlet opening of the second piston bore and the first outlet opening of the second piston bore and the second outlet opening of the second piston bore, the dummy piston including a first bypass passage configured to fluidly connect the first connecting bore to the third connecting bore and a second bypass passage configured to fluidly connect the second connecting bore to the fourth connecting bore.