Land vehicles – Wheeled – Articulated vehicle
Patent
1984-07-12
1985-09-17
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Articulated vehicle
184 80, 184 82, B62D 5308
Patent
active
045416516
ABSTRACT:
A reservoir for grease is provided above the downwardly facing fifth wheel pin plate of a semi-trailer and opens downwardly through the plate at a point spaced forwardly of the associated depending fifth wheel pin. The reservoir may be filled with lubricating grease through a grease fitting associated therewith and sealed whereby the introduction of grease thereinto under pressure will cause the air pressure within the reservoir to be increased. The lower end of the reservoir opens downwardly through the fifth wheel plate and is equipped with a spring-biased ball valve projectable downwardly into sealed engagement with an appropriate seal provided therefor about the outlet of the reservoir and with the ball valve projecting below the fifth wheel pin plate. When the semi-trailer is operatively coupled to a tractor with the fifth wheel pin plate disposed in superposed contacting relation with the fifth wheel on the tractor, the ball valve is upwardly displaced from the seal and lubricating grease under pressure is allowed to flow from the reservoir into the interface area disposed between the fifth wheel pin plate and the fifth wheel. In addition, if the use of lighter lubricants is desired, the reservoir may have a supply reservoir disposed at a higher elevation than the fifth wheel pin plate sealingly communicated therewith in order that lubricant from the supply reservoir may flow by gravity downward into and through the ball valve equipped reservoir for lubricating the interface area between the fifth wheel pin plate and the fifth wheel plate.
REFERENCES:
patent: 1235812 (1917-08-01), Kelly
patent: 3463512 (1969-08-01), Hodgson
patent: 3743054 (1973-07-01), Jones
Diederiks, Jr. Everett G.
Jacobson Harvey B.
Peters Jr. Joseph F.
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