Progressive Lubricant Distributor With Integrated Piston Outlet Bores

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Solution Overview

Problem

Progressive distributors for lubricants are limited by their size and installation height due to the requirement of multiple bores and connections, making them difficult to compact and increasing maintenance costs when replacing lubricant-outlet connections.

Innovation Solution

A progressive distributor design featuring a housing block with through-bore piston bores that combine lubricant inlet and outlet functions, allowing for compact configuration and reduced installation height, along with a venting device and a releasable insert for simplified maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple separate bores are provided for piston bores and lubricant outlets, then the progressive distributor can fulfill its lubrication function, but the housing block size increases and installation height increases

Engineering Contradiction:
Improvelubrication functionVSAvoidhousing block size
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent combines the piston bore and lubricant outlet into a single integrated bore structure. The bore extends through the housing block and serves dual purposes: accommodating the metering piston and providing lubricant outlet connections. This merging of functions reduces the number of separate bores needed and compactly arranges components within the housing block, directly addressing the contradiction between functional reliability and compact size.

Inventive Principle:
Principle #5Merging (Combining)

2Volume of stationary object

If piston bore and lubricant outlet are located close to each other, then the housing block can be more compact, but adjacent lubricant-outlet connections cannot be easily removed for maintenance

Engineering Contradiction:
Improvehousing block sizeVSAvoidmaintenance of lubricant-outlet connection
Core Design Contradiction:
Volume of stationary objectVSEase of repair

Solution Approach 1:

The patent segments the lubricant outlet connection into a removable insert that can be independently accessed. The insert contains the lubricant outlet channel and can be removed from the housing block without requiring removal of adjacent connections. This segmentation allows the compact arrangement of outlets while maintaining ease of maintenance through selective removal of individual inserts.

Inventive Principle:
Principle #1Segmentation

3Ease of repair

If a releasable insert is used for lubricant outlet connection, then maintenance becomes easier, but the device structure becomes more complex

Engineering Contradiction:
Improveexchange of lubricant-outlet connectionVSAvoidstructure of housing block
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The lubricant outlet connection is segmented into a removable insert that can be independently accessed and replaced. The insert contains the lubricant outlet channel and can be removed from the housing block without requiring removal of adjacent connections. This segmentation allows the compact arrangement of outlets while maintaining ease of maintenance through selective removal of individual inserts.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12196366B2Progressive distributor
Publication Date: 2025.01.14 SKF LUBRICATION SYST GERMANY
  • US12196366B2 patent drawing
  • US12196366B2 patent drawing

AI summary

A progressive distributor for lubricant includes a housing block. The housing block includes a lubricant inlet bore, via which receives lubricant, and a plurality of lubricant outlets, via which a metered amount of lubricant is dispensable. A plurality of metering pistons are provided in the housing block for the dispensing of the metered amount of lubricant. The metering pistons are received in associated piston bores. Each piston bore is associated with two lubricant outlets. Each metering piston is displaceable in the piston bore and is configured to alternatingly dispense the metered amount of lubricant to the one or the other lubricant outlet. The piston bores are fluidically connected to the lubricant-inlet bore and to each other via connecting bores to transfer lubricant to the other piston bores. The piston bore includes a first region configured to receive the metering piston and a second region configured as the lubricant outlet.