Bearing protector device

Details Bearing protector device Bearing protector device

1998-10-19

2001-03-13

Bucci, David A. (Department: 3682)

Lubrication

Bearing packer

C184S045100, C384S462000, C301S108100

Reexamination Certificate

active

06199662

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to bearing protector devices of the type which automatically keep a constant pressure inside a wheel hub of a trailer or the like, to stop water and dirt from entering the hub.
BACKGROUND OF THE INVENTION
It is known that bearing protectors require many parts and complicated machining to make them function satisfactorily. Therefore, they are costly to manufacture and not easy to produce.
OBJECT OF THIS INVENTION
It is the object of this invention to provide an improved bearing protector that requires a small number of parts, is simple to assemble and inexpensive to produce.
SUMMARY OF THE INVENTION
This object is attained with this invention of a bearing protector which comprises an outer tube, a cupped piston with a grease nipple and including a spring to apply pressure to grease which is pumped through the grease nipple into a chamber in front of the piston and eventually through a bearing in a wheel hub. Incorporated within the wall of the bearing protector is a relief cavity to prevent over pressurizing. According to this invention the bearing protector is very easy to manufacture and assemble, requiring only 4 parts to make it function.


REFERENCES:
patent: 1544205 (1925-06-01), Barrett
patent: 1634112 (1927-06-01), Montgomery
patent: 2011616 (1935-08-01), Clarke
patent: 2498090 (1950-02-01), MacIndoe
patent: 3077948 (1963-02-01), Law
patent: 3955852 (1976-05-01), De Puydt et al.
patent: 4058185 (1977-11-01), Ploeger
patent: 4106816 (1978-08-01), August
patent: 4190133 (1980-02-01), Ploeger
patent: 4496030 (1985-01-01), Gloviak
patent: 4941550 (1990-07-01), Blake
patent: 5054859 (1991-10-01), Goettker

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