TIRE MICRO AIR PUMP - MAGNA INT INC

Title:

TIRE MICRO AIR PUMP

Document Type and Number:

WIPO Patent Application WO/2012/142120

Kind Code:

A3

Abstract:

An automatic micro-pump which is able to replace the depleted air in a tire without any required action from the driver of a motor vehicle. Using the kinetic energy of the rotating tire, the micro-pump maintains the tire pressure from losses due to rubber permeabilty or temperature changes. The micro pump has an off-balance winding wheel (26) and a primary gear set (50). The off-balance winding wheel drives the primary gear set (50), and a secondary gear set (58) connected to and driven by the primary gear set (50). A pump assembly (86) is connected to and driven by the secondary gear set (58) such that as the off- balance winding wheel rotates, the off-balance winding wheel drives the primary gear set (50), and the primary gear set (50) drives the secondary gear set (58), driving the pump and increasing the air pressure in the tire. The pump assembly (86) draws air from the atmosphere, and forces the air into the tire.

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Inventors:

O'BRIEN TIMOTHY F (US)
BECKLEY DANIEL VERN (US)

Application Number:

PCT/US2012/033066

Publication Date:

March 14, 2013

Filing Date:

April 11, 2012

Export Citation:

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Assignee:

MAGNA INT INC (CA)
O'BRIEN TIMOTHY F (US)
BECKLEY DANIEL VERN (US)

International Classes:

B60C23/12

Domestic Patent References:

WO2010008338A1

2010-01-21

Foreign References:

US20100139828A1	2010-06-10
FR2318747A1	1977-02-18

Other References: