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A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 72/151 - With tensioning or work


Subclass of Class 72 - Metal deforming
Definition: Subject matter including use of means for applying a tensile
No. of patents: 18
Last issue date: 12/19/2006


NumberTitleIssue Date
7150175Clamp assembly for bend arm of tube bending machine
A clamping assembly for use with a bend arm of a tube bending machine. The assembly comprises a force multiplier linkage that applies a controlled and variable force to a workpiece. In one embodiment, the force multiplier linkage comprises a bearing member pivoted b...
12/19/2006
7140224Moderate temperature bending of magnesium alloy tubes
A method for bending magnesium alloy tubes. The method includes heating the tube at moderate temperature in the range of about 100° C. to 200° C., and bending the tube to a bend angle or forming the tube to a desired shape. ...
11/28/2006
7089773Apparatus and method for forming an elongated article
An Apparatus and method for forming elongated metal articles includes one or more rotating dies (1) each provided with an indentation (3). The indentation (track) is shaped so as to be complementary to the actual final shape of the resulting articles, ...
08/15/2006
7021107Bending processor of pipe
A bending processor for a pipe has a pipe bending unit and a pipe twisting unit. The pipe bending unit is rotated by a predetermined angle while pressing the processed pipe against the circumferential face of a bending die, and performs the bending processing. The p...
04/04/2006
7010951Feeding mechanism of an automatic pipe bending machine
A feeding mechanism of a pipe bending machine is equipped with several auxiliary hydraulic cylinders in addition to an original power source for providing power to feed a pipe; the auxiliary hydraulic cylinders are joined to an auxiliary fixing member at output rods...
03/14/2006
6820450Bending device
The bending device comprises a hydraulic motor for moving a feeding table, and a hydraulic circuit including first and second switching valves which can be selectively switched between a speed control channel for supplying operating oil from a discharge-rate variabl...
11/23/2004
5481891Tube bending apparatus and method
The invention provides an apparatus for the rotary draw bending of pipe and tube having means to apply an axial boost force to the trailing end of the tube during the bending operation, which force assists in controlling the flow of tube material into the...
01/09/1996
5426965Carriage boost drive
A boost system (53) traveling behind the carriage (12) of a tube bending machine includes an hydraulic boost cylinder (58) that slidably receives a boost shaft (52) that is connected to the carriage. The boost cylinder has a piston fixed to the boost shaf...
06/27/1995
5333481Apparatus for spatial uncoiling and stretch-bending process in combination with a bending mandrel station
Described is a spatial uncoiling and stretch-bending process in combination with a mandrel bending station and the corresponding apparatus, in which the section being bent is first clamped at either end and prestressed and the section is then bent, with a...
08/02/1994
5237848Method and apparatus for expanding and contouring honeycomb core
A method and apparatus for expanding and contouring honeycomb preforms into compound curved honeycomb core sheets. Honeycomb preforms are provided having a plurality of face to face, contiguous, strips bonded together at selected narrow areas such that wh...
08/24/1993
4970885Tube bending apparatus
An electrohydraulic system for bending tube stock includes a bend head having a mandrel and an actuator coupled to a bending die for engaging the tube stock and bending the stock around the mandrel. A clamp is coupled to a second actuator for gripping the...
11/20/1990
4941338Device for cold forming of ferrous and non-ferrous metal sections
In the process for the cold forming of ferrous and nonferrous metal sections, pretensioning is applied to the initially essentially straight metal section, which is clamped at both ends. Next, the tensioned metal section is bent in a rotating bending tool...
07/17/1990
4893391Method and apparatus for producing round-rolled parts for heat exchangers
The method of making a round-rolled part for a heat exchanger comprises connecting the tubes and the irradiating elements to each other to form a rectilinear network, clamping both ends of the rectilinear network and stretching and bending the clamped net...
01/16/1990
4269054Bending method
A rotary pipe bending machine employs a single hydraulic motor to drive clamp and pressure dies toward the bend die and to rotate the bend and clamp dies. The motor piston is connected via a chain to drive a clamp die carrier toward a rotatably mounted be...
05/26/1981
4201074Submersible pipe installation systems
In general, the present invention provides processes and apparatus for bending and straightening, or otherwise installing marine pipelines at underwater installations, and includes systems in which marine pipelines are installed at water depths to 250 fee...
05/06/1980
4130004Method for bending tubes
A tube bend is started by compresssion bending and continued by draw bending. Conventional bending equipment is employed with one die slightly modified so that normal machine operation causes the pressure die to initially operate in a compression bending ...
12/19/1978
4063441Apparatus for bending tubes
A tube bend is started by compression bending and continued by draw bending. Conventional bending equipment is employed with one die slightly modified so that normal machine operation causes the pressure die to initially operate in a compression bending m...
12/20/1977
4006621Pipe bending machine
The pipe bending machine of the present invention is adapted for mandrelless pipe bending with the simultaneous compressing of the pipe being bent to avoid thinning of the walls thereof. The invention can be used to best advantage when applied to bending ...
02/08/1977
 
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