Outboard Marine Corporation

Other

University of California

George E Miller

H Norman Petersen

Russell J Van Rens

John D Sheldon

Eugene R Hackbarth

William J Casey

Harry M Ward, Iii

Leila Safavi-Tehrani

Mikael Nilsson

Michael J Griffith

Methods and systems are provided for continuous-flow production of radioisotopes with high specific activity. Radioisotopes with high specific activity produced according to the methods described are also provided. The methods can include causing a liquid capture matrix to contact a target containing a target nuclide; irradiating the target with radiation, ionizing radiation, particles, or a combination thereof to produce the radionuclides that are ejected from the target and into the capture matrix; and causing the liquid capture matrix containing the radionuclides to flow from the target to recover the capture matrix containing the radionuclides with high specific activity. The methods are suitable for the production of a variety of radionuclides. For example, in some aspects the target nuclide isNp, and the radionuclide isNp that decays to producePu. In other aspects, the target nuclide isMo, and the radionuclide is Mo that decays to produceTc.

High efficiency continuous-flow production of radioisotopes

A tension measuring apparatus for determining the tension in stretched cables, ropes, wires and the like.

Apparatus for measuring tension in stretched cables

Tangram, associated written material and holder therefor

A direct replacement unit for an elevator touch button of the type which uses a voltage dropping gas tube. The replacement unit includes a series circuit, containing a relay coil, a zener diode, an indicator lamp, and a parallel circuit. The parallel circuit includes a normally open contact switch controlled by the relay coil and a mechanical call button.

Replacement elevator call button assembly

A multi-piece apex seal for a rotary engine in which the seal includes a main seal piece and corner seal piece at one or both ends of the main seal piece and in which at least one of the adjacent engaging surfaces of the main seal piece and a corner seal piece is arcuate to insure a flat fit between the corner seal piece and the adjacent housing end wall.

Multi-piece apex seal for a rotary engine

Disclosed herein is an engine block including first wall portions defining a combustion chamber, second wall portions defining a bore including a first portion extending from the combustion chamber and a second portion enlarged with respect to the first portion, third wall portions defining a water jacket in cooling relation to the second wall portions, and an elongated duct of heat resistant material communicating through the first bore portion with the combustion chamber so as to receive exhaust gases discharged therefrom, which duct is circumferentially engaged by and supported from the second wall portion at locations spaced lengthwise of the duct and extends in the enlarged bore portion in spaced relation from the second wall portions intermediate the locations, whereby there is provided a stagnant air space between the duct and the block intermediate the locations so as to reduce heat transmission from the duct.

Engine exhaust gas discharge arrangement

Disclosed herein is a rotary internal combustion engine comprising housing means defining, in series, first, second, third and fourth trochoid shaped rotor cavities in aligned relation to each other, a rotatably mounted crankshaft including, in series, first, second, third and fourth eccentric portions respectively extending through the first, second, third and fourth cavities, and with the first and fourth crankshaft eccentric portions aligned with respect to each other and with the second and third crankshaft eccentric portions aligned with respect to each other at an angular spacing of 180.degree. from the first and fourth crankshaft eccentric portions, together with first, second, third and fourth rotors respectively rotatably mounted on the first, second, third and fourth crankshaft portions and respectively rotatable in the first, second, third and fourth cavities so as to respectively provide first, second, third and fourth rotating chambers in which combustion takes place, gear means on the housing means and on the rotors for effecting relative rotation between the rotors and the crankshaft and between the crankshaft and the housing means in response to combustion in the chambers, and ignition means for simultaneously initiating combustion in the first and fourth chambers and for simultaneously initiating combustion in the second and third chambers after 180.degree. of crankshaft rotation subsequent to initiation of combustion in the first and fourth chambers. Also disclosed herein is a rotary internal combustion engine comprising a lower housing assembly including housing means defining first and second trochoid shaped rotor cavities, a lower crankshaft portion rotatably and axially supported by the lower housing assembly, an upper housing assembly located above the lower housing assembly and including housing means defining third and fourth trochoid shaped rotor cavities, and an upper crankshaft portion solely supported for rotation in axial alignment with the lower crankshaft portion by the upper housing assembly, coupling means for connecting the upper and lower crankshaft portions so as to transmit axial and rotary loading from the upper crankshaft portion to the lower crankshaft portion, and means securing together the first and second housing assemblies with the coupling means connecting the upper and lower crankshaft portions. Also disclosed herein is a crankshaft for a multi-rotor rotary internal combustion engine and including, in series, first, second, third and fourth cylindrically shaped eccentric portions with the first and fourth eccentric portions being in alignment with each other and with the second and third eccentric portions being in alignment with each other and offset from the first and fourth eccentric portions by 180.degree..

Growing community of inventors

Libertyville, IL, United States of America

George E Miller