Resource Type

597 Matching Results

Results open in a new window/tab.

Nuclear reactor control apparatus. [FBR] (open access)

Nuclear reactor control apparatus. [FBR]

Nuclear reactor safety rod release apparatus comprises a ring which carries detents normally positioned in an annular recess in outer side of the rod, the ring being held against the lower end of a drive shaft by magnetic force exerted by a solenoid carried by the drive shaft. When the solenoid is de-energized, the detent-carrying ring drops until the detents contact a cam surface associated with the lower end of the drive shaft, at which point the detents are cammed out of the recess in the safety rod to release the rod from the drive shaft. In preferred embodiments of the invention, an additional latch is provided to release a lower portion of a safety rod under conditions that may interfere with movement of the entire rod.
Date: April 16, 1981
Creator: Sridhar, B.N.
System: The UNT Digital Library
Gamma-thermometer-based reactor-core liquid-level detector. [PWR] (open access)

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
Apparatus and Method for Transmitting Secure and/or Copyrighted Digital Video Broadcasting Data over Internet Protocol Network (open access)

Apparatus and Method for Transmitting Secure and/or Copyrighted Digital Video Broadcasting Data over Internet Protocol Network

Patent relating to an apparatus and method for transmitting secure and/or copyrighted digital video broadcasting data over internet protocol network.
Date: November 19, 2008
Creator: Mohanty, Saraju P.
System: The UNT Digital Library
Apparatus and Method for Inducing Electrical Property Changes in Carbon Nanotubes (open access)

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
Oil-Burner. (open access)

Oil-Burner.

Patent for an oil-burner for stoves, which sends heats the oil using steam and sends it through a pipe into the stove burners.
Date: March 16, 1909
Creator: Pippin, John William
System: The Portal to Texas History
Bed-Slat Fastener. (open access)

Bed-Slat Fastener.

Patent for a new and useful bed slat fastener, including instructions and illustrations.
Date: August 16, 1898
Creator: Sonntag, Edwin C.
System: The Portal to Texas History
Cotton Compress (open access)

Cotton Compress

Patent for improvements to the cutting mechanism in cotton compresses to "provide positive and reliable means for severing the full-grown or completed bale from the remaining column of compressed material and yieldingly supporting the said remaining column of compressed material under pressure to permit the baling operation to continue" (lines 21-27).
Date: March 26, 1900
Creator: Griffin, Thomas J.
System: The Portal to Texas History
Railroad Switch (open access)

Railroad Switch

Patent for a railroad switch. "This invention relates to railroad-swtiches and is especially designed with reference to street railways and surburban lines" (9-11). Illustration included.
Date: October 16, 1906
Creator: Tucker, Argyle W. & Tucker, Hugh H.
System: The Portal to Texas History
Oil-Burner (open access)

Oil-Burner

Patent for an oil burner to be used in cement kilns. Illustrations included.
Date: July 16, 1912
Creator: Griffiths, Leonard L.
System: The Portal to Texas History
Trolley-Wheel (open access)

Trolley-Wheel

Patent for a trolley wheel and a mechanism for keeping the wheel on the trolley wire. Illustrations included.
Date: April 16, 1912
Creator: Schultze, William H.
System: The Portal to Texas History
Pump (open access)

Pump

Patent for a pump. Illustrations included.
Date: October 16, 1906
Creator: Ferries, James
System: The Portal to Texas History
Artificial Bait (open access)

Artificial Bait

Patent for an artificial bait. Illustration included.
Date: June 16, 1908
Creator: Caldwell, Charley D.
System: The Portal to Texas History
Automatic Dumping-Elevator (open access)

Automatic Dumping-Elevator

Patent for an automatic dumping elevator for supplies which can stop at different heights and dump the contents of the elevator.
Date: November 16, 1909
Creator: Richmond, George E.
System: The Portal to Texas History
Root-Cutting Machine. (open access)

Root-Cutting Machine.

Patent for a root cutting machine, which has saw guards.
Date: March 16, 1909
Creator: Rountree, Joseph Gustave
System: The Portal to Texas History
Tie-Plate (open access)

Tie-Plate

Patent for a tie plate that sticks firmly to the ties, keeps out moisture, and is lighter than other tie plates.
Date: July 16, 1912
Creator: Walton, Jay W. & Dayton, William H.
System: The Portal to Texas History
Cotton-Condenser and Lint-Flue. (open access)

Cotton-Condenser and Lint-Flue.

Patent for a cotton condenser and lint flue for use in cotton gins.
Date: April 16, 1912
Creator: Summerrow, Willie Price
System: The Portal to Texas History
Oil Stove (open access)

Oil Stove

Patent for an oil stove. Illustrations included.
Date: May 16, 1911
Creator: Young, James W. & McGee, Guy
System: The Portal to Texas History
Trace-Fastner (open access)

Trace-Fastner

Patent for Trace Fastners which is useful for securing a trace upon a whiffletree.
Date: December 16, 1902
Creator: Thornton, Burus M. & Thornton, William E.
System: The Portal to Texas History
Planter. (open access)

Planter.

Patent for certain new and useful improvements in "combined cotton - seed and corn planters". (line 11 - 12).
Date: January 16, 1900
Creator: Schofield, James Drummond
System: The Portal to Texas History
Generator for Acetylene Gas (open access)

Generator for Acetylene Gas

Patent for a new and improved generator for acetylene gas.
Date: November 16, 1897
Creator: Williams, Benjamin F.
System: The Portal to Texas History
Post driver (open access)

Post driver

Patent for a portable post driver.
Date: March 16, 1900
Creator: Armstrong, Joseph Milton
System: The Portal to Texas History
Wagon-Brake. (open access)

Wagon-Brake.

Patent for an automatic wagon brake, which engages when the vehicle is stopped to prevent it from rolling downhill and disengages when the wagon starts moving again.
Date: November 16, 1909
Creator: Hewitt, James E.
System: The Portal to Texas History
Electric Signal System (open access)

Electric Signal System

Patent for electric signal system. Illustration included.
Date: May 16, 1905
Creator: Adams, Edwin Johnson
System: The Portal to Texas History
Uterine Supporter. (open access)

Uterine Supporter.

Patent for a uterine supporter which has a soft and flexible bulb supporting the uterus and a more rigid opposite end keeping the bulb in place. The device attaches to a cord on the waistband.
Date: July 16, 1907
Creator: Baird, William T.
System: The Portal to Texas History