Suction dredges of a character having a flexibly mounted suction tube ladder provided on its free end with a suction head having dual mouths opening in opposite directions and a valve therein to afford selective opening of one or the other of the mouths. There is also a power driven auger to urge the suction head firmly against the work area.

An intraoffice trunk switching system wherein a connecting path between the called subscriber and the intraoffice trunk is established first; the connecting path between the calling subscriber and the intraoffice trunk to which the called subscriber is connected is then selected so that if no idle channel is available the first connecting path is released and simultaneously therewith the connecting operation between the calling subscriber and the intraoffice trunk is stopped and an idle intraoff...

An amplifier system includes an operational amplifier having a reference applied to one input terminal. A voltage above or below the reference voltage is applied to the other input terminal by way of an interface circuit. The interface circuit adapts the input for use with a switch or, alternatively, the interface may be disabled to permit use of a variable resistor input such as a thermistor. The output of the operational amplifier may be a switching circuit. The amplifier system is adapted for...

A method is described for performing gene therapy at an alternate site when it is undesirable or impossible to perform gene therapy at the injured or diseased region. A gene therapy composition is administered using a catheter adapted to deliver ultrasound to facilitate uptake of the gene therapy composition into one or more cells at the alternate site. The treated section may then be transplanted to another region of the body which is diseased or injured.

An alternate sampling integrator circuit is disclosed that can concurrently sample and integrate signals received at an input. The circuit may include multiple sampling capacitors, an operational amplifier, and multiple switches. The switches switch the capacitors between a sampling mode and an integration mode.

An embodiment of a method of shifting a valve between a plurality of flow condition positions, includes the steps of providing a mechanical indexer device in operational connection with a valve, the indexer device including a primary path defining a sequence through a plurality of valve positions at and between open and closed and a detent moveable along the primary path; providing at least one alternate path from a point along the primary path to a preceding position on the primary path along t...

The instant invention provides novel crystalline Form II of (.+-.)-5-{[3,5-bis(1,1dimethylethyl)-4-hydroxyphenyl]methyl}-4-thiazolidin one having an x-ray powder diffraction patter with specific d spacings useful for treating inflammation, inflammatory bowel disease, allergies, arthritis and hypoglycemia utilizing the novel physical form as well as pharmaceutical compositions containing the same. A process for preparing Form II Tazofelone is described.

Apparatus for routing local calls around the local exchange carrier includes an intelligent call diverter (ICD) which stores the Automatic Number Identification Code (ANI) of the calling telephone, and a headend for handling routing of telephone calls. When long distance calls are to be routed separately from local calls, the ICD determines whether an outgoing call is local or long distance, and routes the call accordingly. The ICD provides the ANI along with the long distance calls to the heade...

A gear drive including an input gear having alternative first and second positions and which is selectively locatable at one of the first and second positions. The input gear includes a circumferential surface having a preselected first plurality of teeth when the input gear is located at the first position and a preselected second plurality of teeth larger than the first plurality of teeth when the input gear is located at the second position. A power source is connected to the input gear for r...

An alternate action mechanism having a housing with first and second transverse walls enclosing a snap-acting switch accessible through a hole in the first wall. An actuator includes a plunger disposed in the hole for operating the switch and a guide structure slidable along the exterior surface of the second wall. A cam formed on the second wall cooperates with a follower carried by the guide structure to alternately retain the plunger in and release it from a depressed position upon successive...