Connecting rod structure and attachment to wrist pin
OwnerMark M. Evansinventor
Life of this patent
Estimating the term…
Abstract
An engine or other machine has an improved configuration for a connecting rod a wrist pin cradled and fastened on a saddle of the rod. The improved configuration allows fluid flow through the rod to the interior of the wrist pin while reducing the tendency for cracks in the saddle. The configuration includes a fastener which has a through bore and which extends from a void in the rod to the interior of the wrist pin. The fastener fits closely with holes in the wrist pin and the saddle, and a nut fixed in the wrist pin threads with the fastener, whereby the nut and fastener prevent relative motion between the wrist pin and the saddle. The saddle has only one aperture, so the saddle is stronger than prior designs.
Claims10
In a machine having a wrist pin, connecting rod and structure for connecting the rod and pin, an improved configuration for the pin, rod and structure, comprising:
- the wrist pin;
- a wrist pin hole in the wrist pin;
- a nut within an interior of the wrist pin, the nut registering with the wrist pin hole;
- the connecting rod;
- a shaft of the connecting rod defining a void;
- an engagement head of the connecting rod having an inner diametrical surface and a through hole communicating the void with the inner diametrical surface;
- a terminus at one end of the shaft;
- a curved saddle on the terminus in close surface contact with the wrist pin;
- a single aperture in the saddle registering with the wrist pin hole, passing through the terminus and communicating with the void;
- a fastener having a shank passing through, and fitting closely with, the single aperture and the wrist pin hole;
- a threaded portion of the shank engaging the nut;
- and
- a bore extending through the fastener, the bore being part of a fluid flow path between the inner diametrical surface of the engagement head and the interior of the wrist pin.
In a machine having a wrist pin, connecting rod and structure for connecting the rod and pin, an improved configuration for the pin, rod and structure, comprising:
- the wrist pin;
- a fastener;
- a fastener hole in the wrist pin;
- a nut within an interior of the wrist pin on an inner peripheral surface thereof, the nut registering with the fastener hole;
- the connecting rod;
- a shaft of the connecting rod defining a void;
- an engagement head of the connecting rod having an inner diametrical surface and a through hole communicating the void with the inner diametrical surface;
- a terminus at one end of the shaft;
- a curved saddle on the terminus in close surface contact with the wrist pin;
- a single aperture in the saddle registering with the fastener hole, passing through the terminus and communicating with the void;
- a fastener having a shank passing through, and fitting closely with, the single aperture and the fastener hole;
- a threaded portion of the shank engaging the nut;
- and
- a bore extending through the fastener, the bore being part of a fluid flow path between the inner diametrical surface of the engagement head and the interior of the wrist pin.
In a machine having a wrist pin, connecting rod and structure for connecting the rod and pin, an improved configuration for the pin, rod and structure, comprising:
- the wrist pin;
- a fastener;
- a wrist pin hole in the wrist pin;
- a nut within an interior of the wrist pin on an inner peripheral surface thereof, the nut registering with the wrist pin hole;
- the connecting rod;
- a shaft of the connecting rod;
- a terminus at one end of the shaft;
- a curved saddle on the terminus in close surface contact with the wrist pin;
- a single aperture in the saddle registering with the wrist pin hole;
- a fastener having a shank passing through, and fitting closely with, the single aperture and the wrist pin hole;
- and
- a threaded portion of the shank engaging the nut.
Dependencies are inferred from the claim text.