Browse Prior Art Database

Cover Joint Seal

IP.com Disclosure Number: IPCOM000083170D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Brehm, LW: AUTHOR

Abstract

Covers on business machines must have tight joints to prevent leakage of dust and noise. Because of dimensional tolerances on mating parts, complicated by unusual cover joint contours, a tight joint comprising the basic cover material only is not possible. Some form of compliant seal within the joint is necessary.

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Cover Joint Seal

Covers on business machines must have tight joints to prevent leakage of dust and noise. Because of dimensional tolerances on mating parts, complicated by unusual cover joint contours, a tight joint comprising the basic cover material only is not possible. Some form of compliant seal within the joint is necessary.

The proposed seal is a continuous hollow strip 1 of closed-cell rubber of square or rectangular cross section with a hole in it, as shown in the drawings.

Cross sections of the adjacent mating portions of the cover are shown with the joint open and closed in Figs. 1 and 2, respectively. Advantages of this seal over the more conventional materials subject to compressive deformation are: 1) Sealing is obtained over a range of vertical positions - thus, thus, allowing generous dimensional tolerances on the joint. 2) Because the deformation involves a combination of bending, stretching and rolling, the closure forces are lower. 3) High-compressive deformation often leaves the seal material in a permanently deformed state, with subsequent loss of seal effectiveness. There is little compression in the proposed seal so that the undesirable effect is minimal.

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