A bipolar transistor includes an emitter zone having two regions of different doping levels. The more highly doped region is a surface-adjoining region located in the lower-doped region, extending only partially through the lower-doped region and laterally surrounding a central portion thereof. The transistor also includes a surface-adjoining base contact zone which surrounds the emitter zone and is laterally spaced apart from the more highly-doped region of the emitter zone. Additionally, a sur...

A power transmission for engines, motors, pumps and the like comprises a power shaft mounted to rotate about a fixed axis, an eccentric in the form of a tapered bar having arcuate ends secured on the power shaft to turn therewith, a power transmission ring having a circular internal bearing surface contacting the arcuate ends of the eccentric, a plurality of cranks connected to the power transmission ring by crankpins, each crank having a crankshaft journaled to turn about a fixed axis which is ...

An apparatus is disclosed herein for translating an input power force into an increased power output via power multiplier modules or units. Each multiplier module comprises a scissors arrangement of levers or links having one end fixed and its opposite end movable. The links are advanced and retracted in a scissors action by intermediate links having their opposite ends connected together by pivotal means. The intermediate links are operably moved by differentially rotating wheels which oscillat...

Means for operable mounting a power saw upon a base support such as a work bench. The mounting means is adapted and arranged to permit a power saw supported therein to be rotated in a horizontal plane and tilted in a vertical plane to perform various functions and to be inverted in the mounting means to perform additional functions. The mounting means is applicable to known power saws and various makes and is manually transportable and readily erectable on any form or base support such as a work...

Disclosed is a power tool of pen hold type which comprises, within a substantially tubular case having a tip tapered end, a prime mover, a power transmission mechanism connected to the prime mover, a clutch mechanism connected to the power transmission mechanism, a driven section connected to the clutch mechanism when it is made "on", a collet extending from the driven section axially of the case and exteriorly of the tip tapered end thereof, an index mechanism, a switch operating mechanism, and...

A power combiner for solid state oscillator circuits is shown to be the combination of a central cavity and a plurality of subcavities, each one of the latter being dimensioned to operate in the TM.sub.010 mode to synchronize a plurality of solid state oscillator circuits. The central cavity and each one of the plurality of subcavities are coupled together through coaxial lines so that the central cavity in turn synchronizes the plurality of subcavities.

A power valve assembly for use in combination with a carburetor for an internal combustion engine, where such carburetor has structure defining a fuel reservoir, is shown as having a valve body and cooperating valve member effective for opening and closing related passage means leading to the carburetor induction passage for at times supplying additional enrichening fuel flow thereto; a pressure responsive movable diaphragm has an associated actuator connected thereto and is exposed to a source ...

A linear DC power supply provides high efficiency with substantially lower total capacitance than prior art linear DC power supplies. The power supply includes first and second input terminals, first and second output terminals, a center tap transformer, first and second capacitors, first and second charging circuits, and first and second discharging circuits. The center tap transformer has a primary connected to the first and second input terminals and has a secondary with first and second phas...

A power generator utilizing the full volumetric expansion of water upon its change from the liquid phase to the solid phase (ice). The generator includes a chamber having heat transmitting, fluid impervious, flexible walls. The chamber is filled with water. A pressure-containing housing has an internal cavity in which the chamber is located in spaced relation to the housing. The space between the housing and the flexible walls of the chamber is filled with a fluid which is circulated through the...

A power plant for connection to a main pipe conveying a pressure medium such as natural gas, includes a branch pipe connected to the main pipe, an energy conversion device such as a turbine or a piston pump connected to receive pressure medium from the branch pipe and operable to convert pressure energy of the medium into usable energy, and an intermediate buffer reservoir connected to receive pressure medium from the conversion device and supplying the pressure medium from the reservoir to a lo...