IP Library › Granted Patent US 7,047,644
Granted Patent B2
US 7,047,644 · App. 10/370,841 · Granted May 23, 2006

Crankshaft damper and method of assembly

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Quick Facts
Patent No.
US 7,047,644
App. No.
10/370,841
Granted
May 23, 2006
Kind
B2
Abstract

A crankshaft damper and a method of crankshaft damper assembly using interlocking beads. A crankshaft damper having a hub portion and pulley ring and an elastomeric member disposed in an annular space between them is clamped in a tool after initial assembly. A tool having jaw teeth on oppositely disposed, cooperating jaws engages the crankshaft damper hub portion and pulley ring on either side of the elastomeric member. The tool jaws press on the hub portion and pulley ring to create beads or crimps on the hub portion and the pulley ring. The beads or crimps are formed in cooperating groups or sets. They press the elastomeric member into the form of a curve or wave. The curve or wave mechanically locks the hub portion and pulley ring together, thereby locking the elastomeric member in place between them.

Claims (15)

1. A method of crankshaft damper assembly comprising the steps of:

disposing an elastomeric member between a hub portion and a pulley ring;

compressing the elastomeric member a predetermined amount between the hub portion and the pulley ring;

pressing a bead into a flange of the hub portion;

pressing two cooperating beads into a flange of the pulley ring oppositely disposed from the bead in the flange of the hub portion thereby forming a wave shape in the elastomeric member therebetween;

disposing at least one of the beads at an angle (β) to a crankshaft damper centerline (A—A); and

retaining the elastomeric member thereby.

2. The method as in claim 1 comprising the steps of:

bonding the elastomeric member to the hub portion and pulley ring.

3. The method as in claim 1 comprising the steps of:

chemically bonding the elastomeric member to the hub portion and the pulley ring.

4. The method as in claim 1 comprising the steps of:

thermally bonding the elastomeric member to the hub portion and the pulley ring.

5. The method as in claim 1 comprising the step of:

compressing the elastomeric member approximately 15% to 25% more than the predetermined amount between the beads.

Assignments (6)
RELEASE (REEL 033472 / FRAME 0333) Recorded Jun 5, 2024
From: CITIBANK, N.A.
To: GATES CORPORATION
Reel/Frame 067626/0232 →
CHANGE OF NAME Recorded Feb 4, 2015
From: THE GATES CORPORATION
To: GATES CORPORATION
Reel/Frame 034893/0006 →
SECURITY INTEREST Recorded Aug 5, 2014
From: THE GATES CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 033472/0333 →
SECURITY INTEREST Recorded Aug 4, 2014
From: THE GATES CORPORATION
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 033465/0252 →
RELEASE OF SECURITY AGREEMENT Recorded Jul 10, 2014
From: CITICORP USA, INC.
To: AQUATIC CO.; THE GATES CORPORATION, A DELAWARE CORPORATION; GATES MECTROL, INC., A DELAWARE CORPORATION; EIFELER MASCHINENBAU GMBH
Reel/Frame 033289/0254 →
RELEASE OF SECURITY AGREEMENT Recorded Jul 10, 2014
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: AQUATIC CO.; THE GATES CORPORATION, A DELAWARE CORPORATION; GATES MECTROL, INC., A DELAWARE CORPORATION; EIFELER MASCHINENBAU GMBH
Reel/Frame 033290/0631 →