Lubrication – Lubricators – Belt – cable – chain or conveyor
Patent
1996-04-25
1997-07-15
Denion, Thomas E.
Lubrication
Lubricators
Belt, cable, chain or conveyor
184 153, 184 16, 184 17, F16N 716
Patent
active
056474563
ABSTRACT:
A chain drive lubricator includes a pressure gas source; a lubricant reservoir, the reservoir having a gas inlet, a lubricant outlet, and means for receiving the lubricant, and a movable piston separating the gas from the lubricant. A gas valve connected between the source of pressurized gas and the reservoir inlet has first and second closed positions and an intermediate open position, and valve biasing means for moving from the second position to the first position, the gas valve being fixably supported relative to a control member movably supported by the vehicle frame, a flexible conduit extending between the gas valve and the reservoir inlet. An applicator for applying the lubricant onto the chain is connected by a feed conduit to the reservoir outlet. A one-way pressure valve is connected between the outlet and the applicator and has a seat and a closure element that is displaced from the seat in response to fluid flow through the valve from the reservoir, pressure biasing means urging the closure element into sealing engagement with the seat, for preventing flow of the lubricant from the outlet absent a predetermined pressure of the lubricant upstream of the pressure valve. The control member can be a handlebar. The applicator has a roller with valve members for inhibiting lubricant flow except when contacted by the chain. Alternatively, the applicator has a plurality of angled scraper blades for removing contamination from the chain, and a nozzle for directing the lubricant onto the chain.
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