Abstract: A device for injecting gas into a plurality of vertical tubes of a chemical reactor from the bottom. The present invention relates to a device for injecting gas into tubes in a chemical reactor, and more specifically for injecting gas into the bottom of the tubes. The gas may be injected for the purpose of pressure testing the tubes, for blowing out the tubes in order to clean them, or for other purposes.

Abstract: A device and method for automatic unloading of particles from the vertical tubes of a chemical reactor automatically feeds a fish tape into the bottom of the vertical tube to contact and dislodge the particles and automatically retracts the fish tape to allow the particles to fall out of the tube.

Abstract: A method for converting a watertight carrying case into a desk that includes mounting a bracket onto rearward projections from the case for permitting the case to serve as a desk without compromising its watertightness.

Abstract: A method for marking a specific tube in a shell and tube heat exchanger includes inserting a marker into a second tube adjacent to the tube to be marked and directing a directional pointer on the marker toward the tube to be marked.

Abstract: A device for injecting gas into a plurality of vertical tubes of a chemical reactor from the bottom.

Abstract: A device and method for automatic unloading of particles from the vertical tubes of a chemical reactor automatically feeds a fish tape into the bottom of the vertical tube to contact and dislodge the particles and automatically retracts the fish tape to allow the particles to fall out of the tube.

Abstract: A method for marking a specific tube in a shell and tube heat exchanger includes inserting a marker into a second tube adjacent to the tube to be marked and directing a directional pointer on the marker toward the tube to be marked.

Abstract: A system and method are provided for creating and delivering programming enhancements for interactive commerce in a television distribution network. The system includes databases of program schedule information, product information on items available for purchase, and available enhancement layouts. A computer application allows the creation of customized program enhancements, each containing product information relating to a particular program. The system further includes broadcasting apparatus to broadcast program enhancements to viewers on the network at an appropriate time so as to have each enhancement available for display to the viewers during the particular program with which it is associated. To conserve system resources, the program enhancements are assembled, formatted and queued for broadcast only shortly before the associated programs are aired.

Abstract: A system and method are provided for creating programming enhancements for interactive commerce in a television distribution network. The system includes databases containing information on available products, layouts suitable for displaying product information on a television screen, and program schedule information. Computer applications allow a user to select a group of products, select and customize a screen layout, and define a program enhancement associating the products and layout with a particular scheduled program. Each program enhancement created with the system is stored for broadcast to viewers on the network at an appropriate time prior to the scheduled broadcast of the particular program with which it is associated. To conserve system resources, basic screen layouts for the enhancements are stored on viewers' set top boxes, and only information relating to the customized features of the enhancement's appearance, such as color and type style, is broadcast.