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Drill.
Patent for a drill that provides an improvement to connecting the drill bit to the shank so they do not become detached or break.
Date:
May 22, 1919
Creator:
Weathersby, Fred Richard
System:
The Portal to Texas History
Belt-Stretcher
Patent for an improvement in belt stretchers that are cheaper to make and easier to operate.
Date:
May 22, 1920
Creator:
Cherry, Warren L.
System:
The Portal to Texas History
Ice-Machine
Patent for an icebox that can be combined with a refrigerator. The icebox will spray the ammonia compressor coil with water, as well as inducing a forced circulation of water in the icebox's freezing tank.
Date:
May 22, 1920
Creator:
Grant, Willburn C.
System:
The Portal to Texas History
Catalytic-cartridge SO/sub 3/ decomposer
A catalytic cartridge internally heated is utilized as a SO/sub 3/ decomposer for thermochemical hydrogen production. The cartridge has two embodiments, a cross-flow cartridge and an axial flow cartridge. In the cross-flow cartridge, SO/sub 3/ gas is flowed through a chamber and incident normally to a catalyst coated tube extending through the chamber, the catalyst coated tube being internally heated. In the axial-flow cartridge, SO/sub 3/ gas is flowed through the annular space between concentric inner and outer cylindrical walls, the inner cylindrical wall being coated by a catalyst and being internally heated. The modular cartridge decomposer provides high thermal efficiency, high conversion efficiency, and increased safety.
Date:
May 22, 1981
Creator:
Galloway, Terry R.
System:
The UNT Digital Library
Long-range-ordered alloys modified by Group IV-B metals
Ductile long range ordered alloys having high critical ordering temperatures exist in the (V,M)(Fe,Ni,Co)/sub 3/ system having the composition comprising by weight 20.6 to 22.6% V, 14 to 50% Fe, 0 to 64% Co, and 0 to 40% Ni, and 0.4 to 1.4% M, where M is a metal selected from the group consisting of Ti, Zr, Hf, and their mixtures. These modified alloys have an electron density no greater than 8.00 and exhibit marked increases at elevated temperature in ductility and other mechanical properties over previously known ordered alloys.
Date:
May 22, 1981
Creator:
Liu, Chain T.; Inouye, Henry & Schaffhauser, Anthony C.
System:
The UNT Digital Library
A unique system of Fe/Pd for magneto-optical recording and magnetic switching devices
This invention is comprised of a high density magneto-optical information storage medium utilizing the properties of an ultrathin iron film on a palladium substrate. The present invention comprises a magneto-optical medium capable of thermal and magnetic stability and capable of possessing a vertical orientation of the magnetization vector for the magnetic material. Data storage relies on the temperature dependence of the coercivity of the ultrathin film. Data retrieval derives from the Kerr effect which describes the direction of rotation of a plane of polarized light traversing the ultrathin magnetic material as a function of the orientation of the magnetization vector.
Date:
May 22, 1990
Creator:
Liu, Chian Q. & Bader, S. D.
System:
The UNT Digital Library
A unique system of Fe/Pd for magneto-optical recording and magnetic switching devices
This invention is comprised of a high density magneto-optical information storage medium utilizing the properties of an ultrathin iron film on a palladium substrate. The present invention comprises a magneto-optical medium capable of thermal and magnetic stability and capable of possessing a vertical orientation of the magnetization vector for the magnetic material. Data storage relies on the temperature dependence of the coercivity of the ultrathin film. Data retrieval derives from the Kerr effect which describes the direction of rotation of a plane of polarized light traversing the ultrathin magnetic material as a function of the orientation of the magnetization vector.
Date:
May 22, 1990
Creator:
Liu, Chian Q. & Bader, S. D.
System:
The UNT Digital Library
Enhanced adhesion for LIGA microfabrication by using a buffer layer
The present invention is an improvement on the LIGA microfabrication process wherein a buffer layer is applied to the upper or working surface of a substrate prior to the placement of a resist onto the surface of the substrate. The buffer layer is made from an inert low-Z material (low atomic weight), a material that absorbs secondary X-rays emissions from the substrate that are generated from the substrate upon exposure to a primary X-rays source. Suitable materials for the buffer layer include polyamides and polyimide. The preferred polyimide is synthesized from pyromellitic anhydride and oxydianiline (PMDA-ODA).
Date:
May 22, 1998
Creator:
Bajikar, Sateesh S.; DeCarlo, Francesco & Song, Joshua J.
System:
The UNT Digital Library