Patent ID: 9581294
Date: 2017-02-28
CPC Classifications: F16J,F16K,F16N,Y10T

Claim:
1. A replaceable piston/sleeve system used in a distribution block assembly for distributing a low volume of a lubricant at high pressure, the system comprising: a distribution block having at least one inlet section, an end section, and one or more intermediate sections, each intermediate section including a lubricant outlet and a piston bore connected to the lubricant outlet, and a base plate connected together with one or more bolt fasteners; and at least one replaceable piston/sleeve assembly constructed as a combination to be removed together as a replaceable assembly and sized to fit the piston bore of a selected intermediate section, said replaceable piston/sleeve assembly having a sleeve calibrated to hold and align a piston of a selected size to reciprocate within the sleeve while positioned within the distribution block wherein the piston delivers an accurate quantity of lubricant to the outlet such that the rate of distribution of the lubricant is determined by the size of the piston, the sleeve having multiple O-rings disposed on its outer periphery and along its length to stabilize the sleeve within its associated piston bore and to define a fluid path with the distribution block; wherein the piston/sleeve assembly is interchangeable with a piston bore of each intermediate section.