HEATED LUBRICANT PUMP - GRACO MINNESOTA INC

Title:

HEATED LUBRICANT PUMP

Document Type and Number:

WIPO Patent Application WO/2020/258076

Kind Code:

A1

Abstract:

A lubricant pump (14) and a method thereof are disclosed. The lubricant pump (14) includes a pump base (32) and a reservoir housing (30). The pump base (32) and the reservoir housing (30) define a lubricant reservoir for storing lubricant. One or more pump elements (34) extend at least partially into the lubricant reservoir. Heaters (36) are disposed on the pump base (32) proximate the pump elements (34). The heaters (36) are configured to heat the local area surrounding the pump elements (34), to thereby reduce the viscosity of the lubricant at the pump elements (34). The heaters (36) are electrically connected to a thermal switch (38) to control activation and deactivation of the heaters (36). With the lubricant pump (14) and the method thereof, the thermal switch (38) can control the heater (36) based on air temperature rather than the temperature of the lubricant, so the viscosity of lubricant is well controlled.

Inventors:

SONG XIAOCHUANG (CN)
WU JIBAO (CN)
YOU ZAIXING (CN)
TIAN JIN (CN)

Application Number:

PCT/CN2019/093010

Publication Date:

December 30, 2020

Filing Date:

June 26, 2019

Export Citation:

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Assignee:

GRACO MINNESOTA INC (US)

International Classes:

F16N39/04; F16N13/00; F16N13/20

Foreign References:

CN106065992A	2016-11-02
CN207687646U	2018-08-03
CN203857252U	2014-10-01
CN107300119A	2017-10-27
CN102537629A	2012-07-04
CN203731071U	2014-07-23
EP1052445A1	2000-11-15
US4925373A	1990-05-15
EP2479471A2	2012-07-25
US9086186B2	2015-07-21

Other References: