Title: Sealing between relatively rotating members in boring apparatus

Abstract: A boring apparatus having a working member mounted for rotation on a lubricated bearing about a shaft member, the apparatus being of the type in which substantial radial and axial relative motion between said members occurs in response to radial and axial loading conditions encountered by the working member during operation in an abrasive laden external environment, including an improved seal assembly between the members for sealing the bearing from the environment while accommodating the radial and axial relative motion, the seal assembly comprising a seal carrier mounted in a space between the members, a dynamic seal element supported between the carrier and one of the members to form a dynamic seal therebetween, and a static seal element supported between the carrier and a radially extending surface of the other of the members, the dynamic seal element being axially slidable along the one member to accommodate the axial relative motion, the static seal element being deformable and radially slidable along the surface to accommodate said radial relative motion.

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Inventors: Peterson, Carl R. (Boxford, MA, US)
Fisk, Allan T. (Salem, MA, US)

Application Number: 688042
Filing Date: 1976-05-19
Publication_date: 1977-05-03
Assignee: Rapidex, Inc. (Gloucester, MA)
Primary Class(es): 175/345 175/227, 277/322, 277/505, 277/910
Other Classes:
US Patent Ref:

2187037	Jan, 1940	Kirkpatrick	175/347.
2871037	Jan, 1959	Johnson et al.	277/182.
3094335	Jun, 1963	Shenk	277/174.
3384382	Apr, 1968	Rink	277/165.
3718338	Feb, 1973	Traub	277/165.
3851888	Dec, 1974	Limpso, Jr. et al.	277/165.
3947044	Mar, 1976	Friedrich	277/3.
3972536	Aug, 1976	Warner et al.	277/83.

Other Refs:
Primary Examiner: Leppink, James A.
Assistant Examiner:
Attorney: