Patent ID: 8943670
Filing Date: 2015-02-03
Classification: F16B,Y10T

Abstract:
1. A method of securing a composite plastic part to an engine with a bolt and a washer comprising: providing the composite plastic part that defines a hole; providing a first locking feature on a first surface of the washer that engages the part, the first locking feature including a first set of teeth, each of the teeth extending radially outward from an inner hole defined in the washer to a periphery of the washer, each of the teeth being a triangular prism having a base attached to the first surface and an edge opposite the base for engaging the part; providing a second locking feature on a second surface of the washer; providing a third locking feature on a washer engaging surface of the bolt; and inserting the bolt through the hole and the washer and rotating the bolt in a first rotational direction to cause the third locking feature to engage the second locking feature to rotate the washer, wherein the washer is rotated by the bolt to cause the first locking feature to compress the surface of the part sufficiently to resist rotation in a second rotational direction caused by vibration of the engine.