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US 4,984,544 AGranted
Lubricating means for pin connected relatively rotatable engine part and method of lubrication
OwnerRichard L. DeBiasseinventor
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OwnerRichard L. DeBiasseinventor
Estimating the term…
A lubricating system is provided at a junction of relatively rotatable members of an engine in an environment where oil comes into contact with the external surface of the rotatable members. The junction includes a relatively rotatable member provided with a bore and pin extending through the bore. The pin is snugly received in the bore so that rotation between the pin and relatively rotatable member may occur. An example of such a system is provided by the wrist pin connection to a piston. According to the invention, within the bore are recesses spaced inwardly and separated from both ends of the bore and arranged diametrically opposed to each other on a line transverse to the principal linear movement of the wrist pin. A pocket for oil is provided by each of the recesses between the bore of the rotatable member and the pin for accumulation of oil to lubricate between the surfaces of the pin and bore. The recesses may also be connected to an oil-splattered surface by a duct sufficiently small to inhibit pressure within the recess from forcing oil outward, but capable of sucking oil inward from the oil-splattered outer surface.
A lubricating configuration in an engine for a junction of relatively rotatable members in an environment where oil is available to be fed between the rotatable members, comprising
A lubricating configuration in an engine for a junction of relatively rotatable members employing a pin connection between the relatively rotatable members in an environment where at least periodically oil comes in contact with an external surface of the rotatable members at the junction, comprising
In a piston construction employing a piston head, a piston arm and an interconnecting wrist pin wherein the piston head is provided with wrist pin supporting bearing block means shaped and positioned in the piston head to support the piston rod and having a bore through the bearing block means aligned axially with a bore in the piston rod and of a size to accommodate snugly the wrist pin,
A lubricating configuration in an engine for a junction of relatively rotatable members where oil is available to be fed between the rotatable members comprising:
In an engine comprising a plurality of cylinders and pistons for each cylinder and a crank shaft to which piston rods are connected and in turn are connected to the pistons with an interconnecting wrist pin, a bearing configuration comprising:
Dependencies are inferred from the claim text.