Device with components concentrically disposed and rotational in relation to each other and utilization of said device in tire inflating installation

• US 6,575,269 B1
• Filed: 07/11/2001
• Issued: 06/10/2003
• Est. Priority Date: 01/13/1999
• Status: Expired due to Fees

• Current Assignee: Steyr-Daimler-Puch Spezialfahrzeug AG & Company KG
• Original Assignee: Steyr-Daimler-Puch Spezialfahrzeug AG & Company KG
• Inventors: Skoff, Gerhard, Christely, Heinz
• Primary Examiner(s): KIM, CHONG HWA
• Application Number:
  US09/889,123
• Time in Patent Office: 699 Days
• Field of Search: 184/5.1, 184/105.3, 152/415-418
• US Class Current: 184/5.1
• CPC Class Codes: B60C 23/00318 on the wheels or the hubs
• CPC Class Codes: B60C 23/00363 Details of sealings
• CPC Class Codes: F16J 15/162 Special parts or details relating to lubrication or cooling of the sealing itself F16J15/324, F16J15/3404, F16J15/40 take precedence
• CPC Class Codes: F16N 7/36 with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication

Abstract

A tire inflating device for a motor vehicle has a lubricant reservoir connected with a sealed area of the tire bearing. The device has a rotational insert disposed in an external component which has the seal acting upon an inner component. There is a connection member on the wheel support for inflating and deflating a tire mounted on the wheel, a control valve on the hub and bores formed in the wheel support for connecting the connection member with a control valve for the inflation and deflation.

Claims

1. A tire-inflating device comprising:

an outer wheel-supporting member;

a wheel bearing in said wheel-supporting member;

a hub within said wheel-supporting member and journaled for rotation relative to said wheel-supporting member by said wheel bearing;

a plurality of axially spaced sealing rings between said hub and said wheel-supporting member, each of said sealing rings having a pair of annular sealing lips defining a lubrication space between them;

an axially elongated lubricant reservoir formed in said hub and connected to said lubrication spaces by at least one channel formed in said hub and extending at least in part in a radial direction;

a wheel mounted on said hub;

a connection member on said wheel-supporting member for inflating and deflating a tire adapted to be mounted on said wheel; and

a control valve on said hub; and

bores formed in said wheel-supporting member for connecting said connection member with said control valve for inflation and deflation of the tire.

2. The tire-inflating device defined in claims 1, further comprising means for pressing lubricant axially in said reservoir for forcing the lubricant into said lubrication spaces.

3. The tire-inflating device defined in claim 2 wherein said means is an axially displaceable piston bearing upon the lubricant in-said reservoir.

4. The tire-inflating device defined in claim 3, further comprising a spring in said hub braced against said piston.