Multi-part energizer for mechanical seal assembly

Details Multi-part energizer for mechanical seal assembly Multi-part energizer for mechanical seal assembly

2004-06-15

2008-03-25

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

C277S336000, C384S094000

Reexamination Certificate

active

07347290

ABSTRACT:
An energizer for a mechanical seal assembly for use in a drill bit is disclosed. The energizer is a composite of at least two resilient materials, one having a durometer hardness that is greater than the other. The material contacting a journal provides relatively high frictional forces so as to prevent the energizer from rotating in relation to adjacent components. The relatively softer resilient material provides the energizing force necessary to maintain a good dynamic seal between the metal seal rings. The energizer components may be separate components that engage one another upon assembly, or may be bonded together to form a ring prior to assembly into the drill bit.

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Hooper et al.,The Design of a Mechanical Face Seal for a Roller Cone Drill Bit, The American Society of Mechanical Engineers, Dec. 1991 (11 p.).

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