Multiple coupling for lubricating systems
AssigneeLincoln-Helios GmbH
InventorKarl Rodemer
Life of this patent
Estimating the term…
Abstract
The invention relates to a multiple coupling for lubricating systems, preferably progressive lubricating systems of motor vehicles, especially tractor trailer units. The multiple coupling a plug box and a plug, with the help of which several lubrication pipes may be interconnected. In order that the plug box-plug-combination may be used for variable number of lubrication pipes, a special valve arrangement has been provided with the help of which the desired number of passages of lubrication pipes is opened or closed.
Claims13
Multiple coupling for progressive lubricating systems comprising a plug box, said plug box having at least one inlet and at least one return connected with a lubrication pump, and at least two outlets, and with a plug-in piece which has at least two inlets corresponding to the outlets of said plug box and at least two escapes, assigned to its own inlets, to a corresponding number of remote lubricant distributors, the improvement comprising means forming a connecting passageway between the inlet of the plug box and the escape of the plug-in piece, said connecting passageway including a valve arrangement which selectively opens the passage of the lubricant (1) from said plug box inlet to said escape of said plug-in piece, or (2) to said return of said plug box.
Liquid coupling apparatus for coupling a liquid under pressure from a source to a utilization device comprising in combination,
- a plug box, said plug box having means forming an inlet passageway adapted to be connected to said source of liquid, means forming a return passageway to said source of liquid, means forming an outlet passageway, a valve chamber in said plug box forming a connecting passageway between said inlet passageway, said return passageway and said outlet passageway, valve seat means formed at the entrance to each of said return passageway and said outlet passageway, a pair of piston valve elements in said valve chamber, each piston valve element assigned and adapted to seat on one of said valve seats, respectively, a first compression spring between said piston valve elements, a second compression spring biasing both said valve elements in a direction to seat the valve element associated with the valve seat at said outlet passageway, an extension member on the piston valve element associated with said outlet passageway,
- a plug-in piece coupled to said utilization device and having an inlet passageway corresponding and adapted to be aligned with said outlet passageway, a valve actuator member forming an extension of said plug-in piece at said inlet passageway and adapted, when said plug-in piece is mated with said plug box, to engage said extension member and unseat the valve element associated with said outlet valve seat and, through said first compression spring, seat the said piston valve element on the valve seat associated with said return passageway.
Dependencies are inferred from the claim text.