Speed reducer apparatus having auxiliary seal assembly

Details Speed reducer apparatus having auxiliary seal assembly Speed reducer apparatus having auxiliary seal assembly

1997-05-08

2000-05-09

Browne, Lynne H.

Seal for a joint or juncture

Process of dynamic sealing

Close proximity seal

277411, 277421, 277944, F16J 1544

Patent

active

060592923

ABSTRACT:
A speed reducer apparatus includes an auxiliary seal assembly to inhibit ingress of particulate matter. Preferably, the seal assembly is located axially outboard of a primary seal, such as a land riding seal. The seal assembly includes a plate defining a hole through which a rotatable member extends. The hole is sized to provide a predetermined gap between the inside surface of the plate and the outside surface of the rotatable member. An annular bead member is set in place from a viscous state about the rotatable member. In particular, the annular bead member extends across the gap between the plate and the rotatable member, functioning as a dam. Methods of forming the auxiliary seal assembly are also disclosed.

REFERENCES:
patent: 3590652 (1971-07-01), Strang
patent: 4277072 (1981-07-01), Forch
patent: 4452547 (1984-06-01), Thiel
patent: 4626114 (1986-12-01), Phillips
patent: 4915594 (1990-04-01), Lammers
patent: 5540448 (1996-07-01), Heinzen
A brochure entitled "Torque-Arm.TM. Speed Reducers" by Dodge, 6040 Ponders Court, Greenville, SC 29602, dated 1994.
A brochure entitled "Dodge.RTM. Maxum.RTM. Concentric Speed Reducers" by Dodge, 6040 Ponders Court, Greenville, SC 29602, dated 1995.

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