Tire balancing composition

• US 4,867,792 A
• Filed: 02/05/1988
• Issued: 09/19/1989
• Est. Priority Date: 02/05/1987
• Status: Expired due to Fees

• Current Assignee: Everbalance AG
• Original Assignee: Alber Corp. (Vertiv Holdings Co.)
• Inventors: Ronlan, Alvin
• Primary Examiner(s): Morris, Theodore
• Application Number:
  US07/152,855
• Time in Patent Office: 592 Days
• Field of Search: 106/33, 106/190, 106/162, 106/189, 106/204, 106/170, 106/204, 252/315.1, 252/315.3, 152/504, 152/154.1, 523/166
• US Class Current: 106/162.5
• CPC Class Codes: B60C 19/003 Balancing means attached to the tyre
• CPC Class Codes: B60C 5/004 filled at least partially with liquid B60C19/12 takes precedence
• CPC Class Codes: F16F 15/16 using a fluid or pasty materialF16F9/53, F16F15/13157 take precedence; devices connecting input and output members F16D
• CPC Class Codes: F16F 15/366 using fluid or powder means, i.e. non-discrete material
• CPC Class Codes: G01M 1/365 using balancing liquid

Abstract

A thixotropic tire balancing composition having a yield stress value between 30 Pa and 260 Pa, preferably about 120 Pa, is capable of balancing air by being capable of flowing under the influence of the vibrations induced when a heavy spot on the tire contacts the road surface. The composition preferably comprises a mixture of: (1) a liquid di- or trihydric alcohol or a di-, tri-, or tetrameric oligomer thereof, optionally containing water; (2) a polymer soluble or dispersible in the alcohol; (3) hydrophilic fibers; and, optionally, ( 4) a hydrophilic filler. The alcohol 1) is preferably a diol of the general formula HO-(CH(R)-CH₂ -O)_n -H wherein R is hydrogen or C_1-2 alkyl and n is an integer from 1 to 4.

Claims