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Removable, hermetically-sealing, filter attachment system for hostile environments
A removable and reusable filter attachment system is disclosed. A filter medium is fixed to, and surrounded by, a filter frame having a coaxial, longitudinally extending, annular rim. The rim engages an annular groove which surrounds the opening of a filter housing. The annular groove contains a fusible material and a heating mechanism for melting the fusible material. Upon resolidifying, the fusible material forms a hermetic bond with the rim and groove. Remelting allows detachment and replacement of the filter frame.
Date:
June 3, 1981
Creator:
unknown
System:
The UNT Digital Library
High-voltage coaxial switch
A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode is described. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be merely air) between the inner and outer electrodes. The discharge provides a low impedance path between a high voltage charge placed on the outer electrode and a load (which may be a high power laser) coupled to the inner electrode. For high repetition rate the gas between the inner and outer electrodes may be continuously exchanged or refreshed under pressure.
Date:
June 3, 1981
Creator:
Rink, J. P.
System:
The UNT Digital Library
Downhole Steam Injector. [Patent Application]
An improved downhole steam injector has an angled water orifice to swirl the water through the device for improved heat transfer before it is converted to steam. The injector also has a sloped diameter reduction in the steam chamber to throw water that collects along the side of the chamber during slant drilling into the flame for conversion to steam. In addition, the output of the flame chamber is beveled to reduce hot spots and increase efficiency, and the fuel-oxidant inputs are arranged to minimize coking.
Date:
June 3, 1981
Creator:
Donaldson, A. B. & Hoke, E.
System:
The UNT Digital Library
Control of temperature and heat flux in a combustor using coal-derived gas of varying heat content. [Patent application]
The present invention is directed to a fuel-air control system for a combustor in which coal-derived gas of varying heat content is used. To maintain the temperature in the combustor at an essentially constant value the fuel-to-air ratio is adjusted by using a temperature actuated variable pressure regulator in the gas feed line to compensate for the variability of the heat content of the gas. The velocity of the products of combustion is maintained at an essentially constant flow rate by controlling the mass flow of the air and fuel through linked valves on the gas and air feed lines.
Date:
June 3, 1981
Creator:
Loth, John L.; Nakaishi, Curtis V.; Carpenter, Larry K. & Bird, Jimmie D.
System:
The UNT Digital Library
Cotton Elevator and Distributer
Patent for a cotton elevator and distributor. Illustrations included.
Date:
September 3, 1912
Creator:
Ellenburg, Joseph N. & Nelson, Alexander
System:
The Portal to Texas History
Bicycle-Gear.
Patent for a Bicycle-Gear meant to rotate the sprocket or other gear wheel on a bicycle, Including Illustrations.
Date:
July 3, 1900
Creator:
Brady, Alford
System:
The Portal to Texas History
Churn.
Patent for a churn with a construction which will prevent "access of objectionable matter to the churn-body" (lines 14-15) including instructions and illustrations.
Date:
April 3, 1900
Creator:
Hargrove, Kincheon W.
System:
The Portal to Texas History
Box and Package Elevating Apparatus
Patent for an elevator for boxes and packages. Illustrations included.
Date:
May 3, 1910
Creator:
Brigance, Alice Osborne
System:
The Portal to Texas History
Burglar-Alarm.
Patent for an improved burglar alarm to attach to a door or window with a "simple locking device for the hammer" so that the alarm can be transported and reinstalled safely (lines 15-16).
Date:
June 3, 1902
Creator:
Moody, Winfield H.
System:
The Portal to Texas History
Baling-Press.
Patent for certain new and useful improvements in machines for baling cotton.
Date:
March 3, 1898
Creator:
Bessonette, Charles L.
System:
The Portal to Texas History
Airship
Patent for a dirigible airship. Illustrations included.
Date:
January 3, 1911
Creator:
Bradford, William J. D.
System:
The Portal to Texas History
Cotton Gin
Patent for "new and improved Cotton Gin" (line 5).
Date:
October 3, 1900
Creator:
Lumpkin, R.B.
System:
The Portal to Texas History
Burial-Vault
Patent for an air and moisture proof burial vault which can also expel gases. Illustrations included.
Date:
January 3, 1911
Creator:
Pepple, John W.
System:
The Portal to Texas History
Cooking-Stove
Patent for a cooking stove that can be easily replaced with a new one if it breaks.
Date:
December 3, 1912
Creator:
Earnest, Mettie C.
System:
The Portal to Texas History
Attachment for Ice-Boxes.
Patent for an attachment for ice-boxes which is "a vessel for the reception of ice and having a surrounding series of compartments for the reception of the matter to be refrigerated" (lines 11-14).
Date:
April 3, 1900
Creator:
Moyes, Aceph B.
System:
The Portal to Texas History
Burner
Patent for a hydrocarbon oil burner. Illustrations included.
Date:
May 3, 1910
Creator:
Butler, Albert C.
System:
The Portal to Texas History
Bat-Making Machine.
Patent for a cotton bat making machine which allows the cotton lint to be positioned better on the press and the outer bag material covering the cotton lint to be attached together quickly. Illustration is included.
Date:
August 3, 1909
Creator:
Haynes, Daniel
System:
The Portal to Texas History
Cotton-Chopper.
Patent for a cotton chopper attachment, which can be connected to a cultivator to thin cotton.
Date:
August 3, 1909
Creator:
Joiner, Preston
System:
The Portal to Texas History
Core-Drill.
Patent for a core drill for making bore holes in rocks to get out solid samples of the inside of rocks, which has an improved grabbing method for retrieving the piece of rock inside the hole.
Date:
August 3, 1909
Creator:
McLoughlin, Malacha J. & Wynn, John S.
System:
The Portal to Texas History
Crude-Oil Burner
Patent for a crude oil burner for stoves or heaters. Illustrations included.
Date:
January 3, 1911
Creator:
Risley, Carolile
System:
The Portal to Texas History
Coupling For Well-Drilling Tools.
Patent for a new and useful coupling for well drilling tools, including instructions and illustrations.
Date:
October 3, 1899
Creator:
Kuehn, Joachim F. W.
System:
The Portal to Texas History
Copy Holder
Patent for a copy holder for use while typewriting. Illustrations included.
Date:
January 3, 1911
Creator:
Ireland, Ward S.
System:
The Portal to Texas History
Bale-Tie
Patent for a bale tie made of aluminum which has a fastener attached to the band.
Date:
March 3, 1908
Creator:
Brigance, Alice Osborne
System:
The Portal to Texas History
Bale-Band Buckle
Patent for buckles used to hold bands of bales. Illustrations included.
Date:
December 3, 1907
Creator:
Patterson, James S. & Smith, Dallas E.
System:
The Portal to Texas History