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Method of Attaching Elastomeric Seals

IP.com Disclosure Number: IPCOM000228602D
Publication Date: 2013-Jun-21
Document File: 5 page(s) / 414K

Publishing Venue

The IP.com Prior Art Database

Related People

David E Eugene Wilcox: INVENTOR [+3]

Abstract

The objective of this invention is to present a method of attaching elastomeric seal into a rigid supporting structure, the rigid supporting structure could be a metal, resin, plastic or similar material. The elastomeric seal includes several buttons spaced about its periphery to position and attach it firmly to the rigid structure. A bulge like feature is provided in the buttons. The rigid structure is provided with several keyholes on its peripheral surface. During engagement, the buttons are aligned with the keyhole slots, and inserted through the slots. Next the buttons are laterally stretched to pass through the large opening in the keyhole such that bulge of the buttons slip through the opening and locates over the keyhole slot. Upon engagement, the buttons retain the elastomeric part to the supporting structure. The slots oriented to oppose each other and prevent disengagement of the buttons. The major advantages of the invention are fast assembly, no extra tooling and high durability of seals.

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Method of Attaching Elastomeric Seals

David Wilcox, Jeffrey Hein, John Gerrard

ABSTRACT

The objective of this invention is to present a method of attaching elastomeric seal into a rigid supporting structure, the rigid supporting structure could be a metal, resin, plastic or similar material. The elastomeric seal includes several buttons spaced about its periphery to position and attach it firmly to the rigid structure. A bulge like feature is provided in the buttons. The rigid structure is provided with several keyholes on its peripheral surface. During engagement, the buttons are aligned with the keyhole slots, and inserted through the slots. Next the buttons are laterally stretched to pass through the large opening in the keyhole such that bulge of the buttons slip through the opening and locates over the keyhole slot. Upon engagement, the buttons retain the elastomeric part to the supporting structure. The slots oriented to oppose each other and prevent disengagement of the buttons. The major advantages of the invention are fast assembly, no extra tooling and high durability of seals.


1. Introduction

The present invention relates to a seal to provide a leak-tight sealing between static and movable surfaces. To accomplish this, a sealing material is attached by various means to rigid structure's peripheral surface/edge with which the movable member interacts. One of the methods of attaching seal to rigid structure could be of using adhesive bonding materials. In order to accurately position the seals on rigid structure during attachment, a location feature would be provided either in seal or on rigid structure surface. In another approach the seal is provided with number of buttons and rigid structure with apertures to receive these buttons. Diameter of buttons and apertures could be same or different. During engagement, the buttons are pulled through the apertures and released, resulting in an interference fit between the buttons and apertures. In order to facilitate the stretching operation teat features could be attached to the buttons. However, this attaching procedure is cumbersome as it is required to


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iterate hole and button sizes to find a parameter match that would pass as intended. In addition, there can be breakage of buttons during pulling through the apertures. Moreover, the holding force will reduce with the time and thus repeatability and durability are in question.

Consequently, the objective of present invention is to provide a simple, fast and economical method to attach elastomer seal to a rigid structure. Detailed description of the present invention is provided in the following sections.


2. Proposed Solution of the Problem

As it is mentioned in the previous section, the objective of this invention is to provide a method to attach the elastomer seal to rigid structure in sealing applications with better quality, repeatability and durability. This is accomplished by providing several keyhole- shap...