United Technology Corporation

Sigma Dynamics Corporation

Frank J Brown

Eric F Brown

An endoscope is disclosed which is designed to transmit light to the area under observation and allows the light to make contact with the image plane, without the need of a fiber optic bundle. The ocular section of the endoscope, in addition to housing the lenses required to magnify the image for viewing, contains a relay lens whose diameter is less than the diameter of the rod lenses in the relay section. Light is then reflected through a beam director surrounding the ocular relay lens and transmitted to the objective through the excess diameter of the larger diameter relay lenses. Additionally, the ocular section is separable from the relay and objective sections, which are considered disposable, so that it can be reused.

Endoscope apparatus

An abrasion resistant boot of non-metallic material particularly adaptable for use in protecting a pendant or a sling. The boot is attached to the eye of the pendant where it functions to absorb large compressive stresses which might otherwise sever the pendant. Unique failure characteristics of a key element to the boot assembly, comprising a woven Dacron insert, results in the failure of fibers of the insert which are oriented in the transverse direction but not those oriented in the longitudinal direction. This enables the initial impact forces to which the pendant and protective boot are subjected to be readily absorbed without failure of the fibers in the preferred orientation and further enables the sustained stresses to be distributed over the length of the insert.

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Willow Grove, PA, United States of America

Frank J Brown