Lubrication – Lubricators – Force feed
Patent
1995-05-17
1996-09-03
Denion, Thomas E.
Lubrication
Lubricators
Force feed
184 451, 3011082, 3011083, F16N 1104
Patent
active
055515304
ABSTRACT:
A hub-spindle assembly is provided having a spindle and a hub with forward and rearward apertures and an axial passageway extending therebetween. The spindle is received through the rearward aperture into the axial passageway and a wheel bearing is conventionally positioned between the spindle and interior surface of the axial passageway. A cap is fitted into the forward aperture of the axial passageway having a hollow open-ended barrel and a piston slidably positioned therein. The piston and barrel in combination define an interior cavity of the cap. The interior cavity and axial passageway form a continuous lubricant chamber having a fluid volume that is filled in its entirety with a liquid lubricant, thereby fully immersing the wheel bearing housed in the lubricant chamber. When the hub-spindle assembly is in rotational operation, the liquid lubricant typically expands due to heat buildup. Accordingly, a spring positioned between the barrel and piston operates in cooperation with the slidable piston enabling expansion of the lubricant chamber to reduce the fluid pressure within the lubricant chamber without the loss of liquid lubricant.
REFERENCES:
patent: 3077948 (1963-02-01), Law
patent: 3785706 (1974-01-01), Vangalis
patent: 3955852 (1976-05-01), De Puydt et al.
patent: 4058185 (1977-11-01), Ploger
patent: 4106816 (1978-08-01), August
patent: 5054859 (1991-10-01), Goettker
patent: 5303800 (1994-04-01), Persson
Liqua-Lube Information Pamphlet, Liqua-Lube Inc., Sep. 1994.
Brown Rodney F.
Denion Thomas E.
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