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Gamma-thermometer-based reactor-core liquid-level detector. [PWR]
A system is provided which employs a modified gamma thermometer for determining the liquid coolant level within a nuclear reactor core. The gamma thermometer which normally is employed to monitor local core heat generation rate (reactor power), is modified by thermocouple junctions and leads to obtain an unambiguous indication of the presence or absence of coolant liquid at the gamma thermometer location. A signal processor generates a signal based on the thermometer surface heat transfer coefficient by comparing the signals from the thermocouples at the thermometer location. The generated signal is a direct indication of loss of coolant due to the change in surface heat transfer when coolant liquid drops below the thermometer location. The loss of coolant indication is independent of reactor power at the thermometer location. Further, the same thermometer may still be used for the normal power monitoring function.
Date:
June 16, 1981
Creator:
Burns, T.J.
System:
The UNT Digital Library
Artificial Bait
Patent for an artificial bait. Illustration included.
Date:
June 16, 1908
Creator:
Caldwell, Charley D.
System:
The Portal to Texas History
Boiler Stay Bolt
Patent for a boiler stay bolt. This design is made of flexible stay-bolts for boiler allowing for movement bracing sheets. Illustration included.
Date:
June 16, 1908
Creator:
Borneman, Lewis
System:
The Portal to Texas History
Improvements in Sash-Lock
Patent for an improvement on sash locks or fasteners for a window frame to allow two sashes to be controlled by one sash.
Date:
June 16, 1903
Creator:
Miller, John D.
System:
The Portal to Texas History
Bed Slat Fastener and Brace
Patent for a bed-slat fastener and brace. This bed-slat design is designed to "effectually prevent the distension of the side rails of the bed and will also strengthen and support the slats and prevent sagging or breakage" (line 9-12) illustration included.
Date:
June 16, 1903
Creator:
Shelton, Robert H.
System:
The Portal to Texas History
Cattle Guard
Patent for a cattle guard. Illustration included.
Date:
June 16, 1908
Creator:
York, Edward Jackson; Howze, Walter L. & Caldwell, Thomas W.
System:
The Portal to Texas History
Combined Dish-Washer and Churn
Patent for a combined dish-washing machine and churn, with illustration and description of parts.
Date:
June 16, 1885
Creator:
Fletcher, William Nelson
System:
The Portal to Texas History
Car Coupling.
Patent for a new and improved coupling for railroad cars. This design "relates to car-couplings, and it has for its object to provide a device of this character which shall be automatic in its action, simple in its construction, positive and effective in operation, and one that will be strong and durable. A further object of the invention is to provide improved means for supporting the link in a horizontal position, so that it will engage the draw-head of the adjacent car. The invention consists in the improved construction and combination of parts" (lines 10-21).
Date:
June 16, 1885
Creator:
Hogan, John James & Miller, Rudolph Albert
System:
The Portal to Texas History
Apparatus for Handling and Cleaning Seed-Cotton.
Patent for improvements in apparatus for handling and cleaning seed-cotton that “use a pneumatic tube, through which cotton is drawn by an exhaust-current.” (Lines17-19) Illustration is included.
Date:
June 16, 1891
Creator:
Thomas, Robert S.; Hardwick, Saunie W. & Elam, William E.
System:
The Portal to Texas History
Animal-Tread.
Patent for improvements in animal-treads when “animal is placed in the tread, the single or double tree being attached to the arm c’, and thus in addition to his weight he will have his strength to operate the tread. The function of the rope and weight is to keep the traces and tree from under the animal’s feet in case he should slack his speed, and thus prevent his tripping.” (Lines 59-66) Illustration is included.
Date:
June 16, 1891
Creator:
Bevil, John R.
System:
The Portal to Texas History
Adjusting Device for Compressing-Rolls.
Patent for adjusting devices for compressing rolls which “employed for compressing into a continuous thin sheet cotton fiber; and the objects in view are to provide a simple and convenient means for binding the rolls in contact, and when so bound to prevent any undesired yielding.” (Lines 10-15) Illustration is included.
Date:
June 16, 1891
Creator:
Goldthwaite, Joseph G.
System:
The Portal to Texas History
Bootjack.
Patent for a new and improved boot-jack. This design is for an addition to existing boot-jacks that allows for wet or tight boots to be removed completely after the heel of the foot is loosened, all without the use of hands. This additional apparatus can be adjusted to different angles by way of eye-holes and screws.
Date:
June 16, 1896
Creator:
Ulferts, Ulfert Harms
System:
The Portal to Texas History
Bolt-Cutter.
Patent for a bolt cutter made up of "a stationary cutter and two movable cutters operated by levers adapted to come in contact with the edge of the stationary cutter, with plates and bolts for securing the same together in proper position" (lines 12-16). The purpose of the invention is to cut the useless ends off bolts.
Date:
June 16, 1896
Creator:
Hagelstein, Christ
System:
The Portal to Texas History
Churn.
Patent for a simple and efficient churn where "the process of churning is rendered easier, the resultant product firmer, and butter obtained in a shorter space of time than heretofore, while at the same time the milk is left in better condition and rendered free from water" (lines 12-17).
Date:
June 16, 1896
Creator:
Holt, Henry Lee
System:
The Portal to Texas History
Bridge.
Patent for "a simplified and cheapened construction of bridge whereby the weight and strain will be more equally divided and the braces so arranged that expansion and contraction laterally are avoided, while permitting of the necessary expansion and contraction longitudinally of the bridge." (Lines 13-20) Includes instructions and illustrations.
Date:
June 16, 1896
Creator:
Mitchell, Hirtie F.
System:
The Portal to Texas History
Churn.
Patent for a churn. The patent is for a "means for adjustably securing a series of vertically-arranged breakers in a churn-body of any size, operating with a revolving dasher" (lines 8-11).
Date:
June 16, 1896
Creator:
Haley, William L.
System:
The Portal to Texas History
Carpenter's Square.
Patent for a carpenter's square that uses an improved attachment "for laying off bevels at various angles" (lines 15-16).
Date:
June 16, 1914
Creator:
Buckland, Charles O.
System:
The Portal to Texas History
Attachment for Cultivators
Patent for an improvement in attachments for cultivators, including illustrations.
Date:
June 16, 1914
Creator:
Leischner, Gotthilf
System:
The Portal to Texas History
DOOR-HANGER.
Patent for improvements to the door hanger, specifically aimed at car doors, including illustrations.
Date:
June 16, 1914
Creator:
Mason, Charles O.
System:
The Portal to Texas History
Cotton-Chopper.
Patent for a new cotton chopper allowing for continuous operation while raising or lowering the device and without requiring additional strain from draft animals during operation, including illustrations.
Date:
June 16, 1914
Creator:
Hickson, Aaron L.
System:
The Portal to Texas History
HARROW.
Patent for new attachment for the foot of a harrow, including illustration.
Date:
June 16, 1914
Creator:
Glover, Henry M.
System:
The Portal to Texas History
Oxygen-stabilized zirconium-vanadium-iron alloy
An oxygen stabilized intermetallic compound is described which has the formula (Zr/sub 1-x/Ti/sub x/)/sub 2-u/(V/sub 1-y/Fe/sub y/)O/sub z/ where x = 0.0 to 0.9, y = 0.01 to 0.9, z = 0.25 to 0.5 and u = 0 to 1. The compound is capable of reversibly sorbing hydrogen at temperatures from -196/sup 0/C to 200/sup 0/C at pressures down to 10/sup -8/ torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.
Date:
June 16, 1981
Creator:
Mendelsohn, M H & Gruen, D M
System:
The UNT Digital Library
Apparatus and Method for Inducing Electrical Property Changes in Carbon Nanotubes
Patent relating to an apparatus and method for inducing electrical property changes in carbon nanotubes.
Date:
September 21, 2004
Creator:
Allara, David L., 1937-; Chen, Min; Henley, Donald E.; Imholt, Timothy & Roberts, James A.
System:
The UNT Digital Library
Improvement in Scrapers.
Patent for a horse-drawn excavator that includes a scoop attached to wheels.
Date:
June 16, 1874
Creator:
Arcos, Ignacio
System:
The Portal to Texas History