Abstract: Several methods are disclosed for minimizing the number of defects or misfit locations in a SiGe layer selectively or non-selectively deposited on a partially oxide masked Si substrate.

Abstract: The present invention relates to a post puller for posts of a given cross section that includes concrete bases. The post puller comprises in combination: (i) a fulcrum having a horizontal base, a pair of upright arms extending from the base and a pivot pin of circular cross section attached between the arms remote from the base and perpendicular to the upright arms; (ii) a lever of circular cross section in pivoting contact with the fulcrum as a wooden post is extracted, the lever including a handle of fixed length relative to the fulcrum and a lifting segment, and a perforated plate sized to connect to the wooden post to be extracted for coupling the latter to the handle of the lever.

Abstract: A method of fabricating a semiconductor device to retard diffusion of a dopant from a center active region into adjacent regions. The center active region is epitaxially formed by selectively increasing and decreasing an introduction of diffusion-suppressing material, preferably germanium, into a semiconductor material, preferably silicon, so that a vertical profile of the content of the diffusion-suppressing material is such that outdiffusion of a dopant is minimized. One embodiment of the tailoring is to increase the concentration of the diffusion-suppressing material at both of the opposed sides of a base region of a bipolar transistor, thereby providing concentration peaks at the interfaces of the base region with collector and emitter regions. The concentration of germanium in a Si.sub.1-x Ge.sub.x layer is such that the value x is within the range 0.08 to 0.35 and optimally within the range 0.15 to 0.31. The dopant, preferably boron, also has a tailored concentration profile to minimize outdiffusion.

Abstract: A clutch/brake mechanism designed for use in a power driven system which delivers relatively high braking and driving power while avoiding simultaneous engagement of the clutch and the brake includes a device for actuating the clutch and the brake such that the clutch is effectively engaged by relatively slight actuation of the actuator device and the brake is effectively engaged by relatively considerable actuation of the actuator device.

Abstract: A foldable protective liner for a truck cargo bed. All surfaces of the liner which may be subject to significant impact from cargo striking thereagainst have formed thereupon a plurality of protective ridge members. A storage container having similar ridge members formed on outer surfaces thereof may engage with the protective liner in an interfitting and interlocking relationship, to thereby support and affix the storage container in the truck cargo bed. The liner is foldable to a highly compact configuration for efficient storage and shipping. The foldability of the liner further eases its installation and removal from a truck cargo bed.

Abstract: A bacteriophage directional cloning vector containing a multiple cloning site, a method for preparing cDNAs that can be cloned in a unique orientation and a bifunctional oligodeoxynucleotide linker, which creates a unique restriction site when ligated to the 3' end of cDNA fragments. The simple and efficient cDNA cloning system reduces the amount of RNA and effort required for the preparation of large directionally cloned libraries by providing a unique vector that accepts cDNA fragments in a unique 5'-3' orientation and by providing a unique bifunctional linker that facilitates the preparation of cDNA fragments that can be ligated directionally into the vector.

Abstract: A testing system for determining accelerated weathering characteristics of various items such as fabrics and paint samples. Rack means are provided for carrying samples to be tested. A source of irradiation of the inner-facing surfaces of the samples carried on the rack is also provided, along with a blower system for directing a stream of air through the rack. In accordance with this invention, a generally conical member is positioned in the stream of air to redirect the stream outwardly in a generally conical flow path. The generally conical flow path is positioned by the conical member to flow across the inner-facing surfaces of the samples carried on the rack.

Abstract: An electron image projector for projecting mask patterns with unity magnification onto a semiconductor slice comprises a cathode from which emitted electrons are accelerated by a uniform electric field and focussed by a uniform magnetic field onto a target. To reduce the dependency of electron trajectories on the local shape and disposition of the target, the uniform electric field is applied by an accelerating voltage between the cathode and a grid electrode acting as the anode between the cathode and target. The grid is positioned at a first magnetic focus, and the target is positioned at a second magnetic focus of the uniform magnetic field. A small voltage much less than the accelerating voltage may be applied between the grid and the target to obtain correct focussing. Structure is also provided to move the grid parallel to the target during exposure in order to prevent the grid pattern from being reproduced on the target.

Abstract: A testing system for determining accelerated weathering characteristics of various items such as fabrics and paint samples. Rack means are provided for carrying samples to be tested. A source of irradiation of the inner-facing surfaces of the samples carried on the rack is also provided, along with a blower system for directing a stream of air through the rack. In accordance with this invention, a generally conical member is positioned in the stream of air to redirect the stream outwardly in a generally conical flow path. The generally conical flow path is positioned by the conical member to flow across the inner-facing surfaces of the samples carried on the rack.

Abstract: As civilization progresses people have a desire to build their homes as close as possible to the ocean and other coastal waters. Due primarily to the attraction of the moon, the ocean's shoreline moves regularly between high and low tide elevations, referred to as the foreshore area. Beyond the foreshore area there are successive areas identified as the trough and the bar areas resulting from the turbulence caused as the incoming waves reach the shallower waters as they approach the foreshore area. The tidal movement of the water, coupled with periodic storm surges causes dramatic shifting of the shoreline, frequently with disasterous results. Concerted efforts have been made to overcome this serious condition, but without marked success. We have devised a system whereby erosion can be prevented. We provide an artificial reef positioned in the submarine beach area, an area in the water that is shallow at low tide and is out beyond the foreshore area and the trough and the bar areas.

Abstract: A unique, portable, mini-warehouse system is defined comprising a plurality of side-by-side cubicles permanently mounted for mobility on a wheeled trailer frame; the mini-warehouse system being lowered to a ground access level for use as a temporary, multi-cubicle storage facility and being raised on wheels for travel on roadways; the mini-warehouse system being provided with a unique, leak-resisting doorway assembly (with threshold) to assist in preventing the entry of rainwater into the cubicles.

Abstract: Apparatus for catalytic cracking of a selected portion of a hydrocarbon feedstock comprising a riser reactor and a catalyst regenerator, a regenerated catalyst cooler, and an absorber. Regenerated catalyst from the catalyst regenerator is conducted through the catalyst cooler into the absorber where it adsorbs hydrocarbon cracking feedstock and then returned to the riser reactor. A duct carries part of the hot regenerated catalyst from the catalyst regenerator directly to the riser reactor to supply heat for cracking the hydrocarbon feedstock.

Abstract: A housing system formed of a plurality of separate, preconstructed living units which housing system is characterized by a unique roof joint system wherein one of the adjacent living units comprises an overhanging casing protruding from and running along the length of its roof edge and the adjacent living unit comprises an uprising flange element extending along the length of its roof edge; and further characterized in that the roof edges of adjoining living units need not be equal in height and the length of any unit comprising the housing system need not be equal to the length of any other unit within the housing system. The present invention allows for a multitude of new and different housing designs for preformed, transportable homes.

Abstract: An improved method for fluidized catalytic cracking of a selected portion of a paraffinic hydrocarbon feedstock in which a paraffinic chargestock for a fluid catalytic cracking unit is processed for the separation of at least a part of its paraffinic components from non-paraffins by means of a zeolite composition which acts both as a molecular sieve and a cracking catalyst. The paraffins-containing fraction adsorbed on the molecular sieve is subjected to catalytic cracking in a riser-type fluid catalytic cracking reaction zone at a temperature in the range of 650.degree. to 700.degree. C. under subatmospheric pressure conditions for the production of light olefins.

Abstract: A lading protection device in the form of a shock absorber for a railway car including a cylinder containing a piston and a body of hydraulic fluid normally captive between the front face of the piston and the closed end of the cylinder. A flow control valve assembly, centered in the piston, mounts an orifice bushing defining a constricted circular orifice. The assembly includes a valve stem slidable in the piston with a spring at its inner end for pressing the stem in a direction to seal the orifice. The piston has a fluid passage extending therethrough and an annular separator piston defines, with the main piston, a receiving space into which the fluid flows upon impact. The space in back of the separator piston is filled with a charge of gas under high pressure so that when the impact has been dissipated the gas pressure acting upon the separator piston restores the fluid to its normal position in readiness for a succeeding impact.

Abstract: A backstop assembly for use with a cushioning device in the sill of a railway car. The cushioning device has a body, or cylinder, slidable endwise in the sill and carrying a car coupler at its outer end. The cylinder has a piston centered on the sill axis and a piston rod projecting from its inner end terminating in an enlarged end collar of circular cross section which is received in a backstop. The backstop is of rectangular box shape secured in the sill and having an inner end wall, outer end wall, top wall and parallel side walls, the end walls being axially spaced to form a chamber for loose, axially captive accommodation of the collar. The outer end wall has an arch-shaped clearance opening for loose accommodation of the piston rod.