Caterpillar Tractor Co.

Hiram A Brubaker

Gerald P Simmons

William E Streight

Alexander Goloff

Robert W Brown

An optical system for directing a beam of corpuscular energy such as a laser beam is provided and includes a fixed mirror mounted at 45.degree. to the longitudinal axis of the beam so as to deflect the beam substantially 90.degree. to impinge upon a fixed concave mirror located at the forward end of the optical system housing. The beam is then reflected and converged back to a convex mirror mounted on a cylindrical mount within a centrally disposed bore in the 45.degree. mirror and then forwardly through a similar aperture in the concave mirror where it passes out through the forward end of the housing to a point of focus on, for example, a workpiece. The convex mirror mounting arrangement provides for three degrees of freedom whereby focusing and adjustment of the optical system is accomplished by merely adjusting one of the three mirrors while holding two of the mirrors fixed. Means for adjustment includes a pair of sleeves around the cylindrical convex mirror mount which are eccentric, thereby providing adjustment of the beam in the Y and Z axis directions by relatively rotating the sleeves. Adjustment in the X axial direction is accomplished by means of adding shims between the radially outwardly directed flange on the rear end of the cylindrical mirror mount and the sleeves. The invention also provides for a method of aligning such an optical system both internally and with an external source of corpuscular energy.

Mounting arrangement for right angle cassegranian telescope reflector

A fluid cooled lens assembly is provided which comprises a housing mounting a lens or window where a window is a lens with infinite radius of curvature therein and a cooling passage included in said housing for directing coolant fluid around the lens periphery from an inlet through an outlet in the housing. Turbulators in the form of protuberances spaced throughout the cooling passage restrict the flow of fluid and thereby cause turbulence to assist and enhance the heat transfer effect of the fluid. The cooling passage turbulators are formed within one of a pair of mounting rings comprising the housing.

Peripherally cooled laser lens assembly

A system for cooling a mirror such as a laser mirror is provided. The system includes a mirror having a reflective surface and a plurality of coolant chamber cavities arranged in serial order from an inlet to an outlet. Restrictive flow passages formed within walls between the cavities control coolant flow and produce desired turbulence within the cavities for enhanced heat transfer from the mirror to the coolant.

Chambered mirror construction for lasers

Apparatus for machining the end walls of slant axis rotary mechanisms including a base, a support pivoted on the base for rotation about a first axis, a shaft journalled on the support for rotation about a second axis nonparallel to the first axis, a work holder carried by the shaft for receiving a housing element of a slant axis rotary mechanism to have an end wall machined thereon, a tool adjacent the work holder operable to perform a machining operation on a housing element received on the work holder, a drive for rotating the shaft, and a mechanism responsive to the rotation of the shaft for oscillating the support about the first axis in timed relation to rotation of the shaft so that a housing element will be rotated and oscillated against the tool to machine an end wall thereon.

Apparatus for machining end housings

A method of forming a groove in an essentially planar face of a metal object, the groove being uniformly curved on an arc of radius 'r', and being of a width 'w' and a constant depth 'd'. Such grooves must be formed, for example, to receive the end face seals of the piston of a rotary engine of the trochoidal type. The groove is cut with a broach which is uniformly curved on an arc of said radius 'r', by producing relative motion of the broach and the object about an axis which is the center of a circle of said radius 'r', in such manner that the teeth of the broach cut the groove.

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Peoria, IL, United States of America

Hiram A Brubaker