The present invention is a system that includes a quadrant detector with an axis between the detector elements aligned with the direction of film motion. The output of the detector is used by an analog signal processor composed of adders and subtractors to produce signals for detecting the center of the perforation and lateral displacement of the perforation and to provide an illumination adjustment signal. Control logic connected to the analog processor produces signals indicating perforation e...

Improved method and apparatus for directionally applying high pressure jets to well casing or liners to clean openings in the casing, liner and the adjacent geologic formation which are plugged with foreign matter. High velocity jets of liquid having a velocity in excess of 700 feet per second are jetted from jet orifices having a 1/16th to 1/4th inch diameter and having a standoff distance between 5 and 100 diameters of the orifice from the openings to remove substantially all plugging material...

An anamorphic imaging system is disclosed which maximizes the use of available image area to minimize display magnification and image degradation due to display magnification, reduces the amount of anamorphic squeeze or stretch during photography to lower image degradation due to anamorphosis, and in film applications, utilizes a film frame that is only three perforations in height to reduce the amount of original film needed. The frame for either film or digital applications has an aspect ratio...

A reversible ground perforating device powered by a gaseous medium under ssure, comprising a hollow cylindrical body with a pointed front end. The body accommodates a hammer adapted to reciprocate therein. A front power chamber of variable volume is formed by the hammer in the body. The rear end of the hammer has a cylindrical hollow which forms a rear power chamber of variable volume. The power chambers are interconnected by means of ports provided in the hammer. A stepped cylindrical barrel is...

A perforation detector including a housing having a first portion and an oppositely disposed second portion for receiving the perforated area of a traveling web therebetween. One portion supports an optical signal emitter and the other portion supports a receiver for detecting the optical signal. The first portion is connected to a source of pressurized fluid such as filtered air. Such portion has a passage for directing the fluid flow, in the form of a fluid curtain, about the optical element i...

A door penetrating connector assembly for providing electrical connectivity through a perforated equipment rack door includes a first connector that includes first electrical contacts configured and disposed to fit through corresponding holes in the equipment rack door, and a second connector that includes second electrical contacts configured and disposed to receive and make electrical contact with the first electrical contacts, where the connectors are configured to inhibit electrical connecti...

A method for performing single trip perforation and packing operations via a downhole assembly in a cased well bore is described. The assembly is provided with an upper packer and a lower packer and has fluid communication established therethrough. The upper packer of the assembly is set to isolate a perforated production zone by introducing pressurized fluid through the assembly and against the casing below the lower packer of the assembly.

An anamorphic imaging system is disclosed which maximizes the use of available image area to minimize display magnification and image degradation due to display magnification, reduces the amount of anamorphic squeeze during photography to lower image degradation due to anamorphosis, and in film applications, utilizes a film frame that is only three perforations in height to reduce the amount of original film needed. The frame for either film or digital applications has an aspect ratio of approxi...

An apparatus and method for drilling an orifice in a human cranium at an angle of substantially 90.degree. to a plane defined by a tangent to the surface of the cranium at the orifice. The apparatus comprises a first tubular guide for directing a drill at the proper angle, the first guide being supported upon the cranium by a plurality of leg members. The invention further comprises a hand-operated twist drill device, configured for insertion into the tubular guide. A second guide, of reduced di...

A copying machine which forms the whole image of an original onto a photosensitive drum is provided with an image control means for properly functioning not to form images of both end portions of an original. Either the whole image of an original or the portions of image which excludes both end portions is formed onto the photosensitive drum depending on whether the image control means is operated or not.