Ford Global Technolgoies, LLC

Martin Arthur Trapp

Gary D Mullen

Barry J Hughes

Junko Pauken

Albert James Dapoz

Christopher James Bartos

Norman Haidous

Richard Joseph Rozmus

Robert S Parsons

The invention relates to a molded assembly having reduced squeaking and rattling. The molded assembly includes a first component of a vehicle that has a first surface. The assembly also includes a second component of a vehicle having a second surface. The second component is assembled to the first component. An isolator is disposed between the first and second components and is secured to the first surface. The isolator comprises an injection-moldable self-lubricating elastomer impregnated with a fatty amide. An interface between the isolator and the second surface has a ratio of a co-efficient of static friction to a co-efficient of dynamic friction less than 1.4.

Molded assembly having a reduced tendency to squeak and a method of manufacturing the assembly

A threaded screw has a first segment adjacent the screw head (10) with nontapered sides for engaging metal automotive fastener clip nuts (30) and a second segment with tapered sides for engaging plastic bosses (24). The second segment is adjacent the first segment but distant from the screw head (10). A single set of threads (36) is used for both the metal clip nut (30) and the plastic boss (24). The threads (36) have a helical pitch angle (P) of about nine degrees and form a flank angle (.beta.) of about thirty degrees relative to a horizontal axis (20) of the screw. The screw taper matches the taper of the boss opening (22) to promote even stress distribution.

Multiple use screw with tapered threads

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Novi, MI, United States of America

Martin Arthur Trapp