A hand held open jawed wrench having an internal mechanism which permits the tool to be used when stationary and to multiply torque and force applied to a nut. There is an external take-off member to which force can be applied and an internal chain and gear drive to effect the torque multiplication. A floating jaw member is rotated by the internal mechanism and there is provision for inserts to accomodate different size nuts.

In a duplicating machine for duplicating images on both sides of copy sheets including a blanket cylinder and an impression cylinder, a mechanism for handling the sheets and re-feeding the sheets back to the impression cylinder for duplex copying. The blanket cylinder has first and second images transferable to the copy sheets. The impression cylinder forms a nip with the blanket cylinder for transferring the copy sheets through the nip. A first gripper on the impression cylinder releasably enga...

A shaker for performing both absolute and comparison accelerometer calibration. A reference accelerometer is mounted within or attached to a shaker head and calibrated with the shaker head by an absolute method. The shaker, thus calibrated absolutely, becomes a portable device for performing comparison calibrations on other accelerators which can be mounted on its shaker head.

A computer system has an addressing capability many times greater than the number of address which can be generated by its binary address lines through the use of a plurality of addressable banks (14, 16, 18, 22, 30, 34) (memory, addressable peripherals or addressable system controls) in each of a plurality of different ranges, (II, III, IV) with several different banks in each of said plural address ranges being useable in combination for any given mode of operation or program. Bank selection w...

In practice, switching is a continuously changing mixture of point-to-point connections, point-to-multipoint connections with low fanout, and point-to-multipoint connections with high fanout. The switching elements of a switch optimized for point-to-point connections are additionally enabled to copy a few input signals for an arbitrary number of outputs, so that a very large number of copies is attainable for few input signals. This switch is supplemented by a copy switch which serves exclusivel...

A cryopump is capable of pumping a process chamber at a process pressure and differentially pumping a second chamber such as an RGA independently at a substantially lower pressure. A member extends through the cryopump housing into a low pressure region disposed within the second stage array. The member comprises a port for accessing the low pressure region, thus providing an independent differential pumping source. No physical seal is required between the member and the main cryopump volume to ...

A multi-channel and multi-capability facsimile system including N(.gtoreq.2) signal-carrying facsimile channels, an image server means to process, store and retrieve document image information, and a master processing unit to control the process by which information is transferred between a facsimile channel and the image server means, and to enable and disable data compression and expansion document image information that is provided to or received from the facsimile channels. The system: (1) a...

A guidewire imaging catheter includes a catheter body, housing secured to the distal end of the catheter body, a drive cable extending through a central lumen of the catheter body, and an imaging system disposed within the housing and coupled to the drive cable. A fixed guidewire is secured to the distal tip of the housing, and the catheter body is highly flexible while retaining sufficient torsional stiffness to allow the entire catheter to be used as a guidewire. Thus, the imaging guidewire ca...

In accordance with a preferred embodiment of the invention, the write cycle of an SRAM column is increased. The SRAM column includes at least one SRAM cell connected to the bit line and the bit line complement of the column. Further, a pair of select transistors are located below the bottom SRAM cell, where one select transistor is connected to the bit line and the other is connected to the bit line complement. The select transistors select whether the respective bit line and bit line complement...

A window with a ventilating capability that does not decrease the insulating effect includes a window sash on which there are disposed at regular spaced intervals a plurality of screens between which are formed insulating air layers.