Iomega Corporation

Tensys Medical, Inc.

Other

Mark W Perona

Russell D Hempstead

Nicholas Brawne

Gregory I Voss

William H Markle

Simon E Finburgh

Ronald S Conero

John B Plunkett

Robert Wilson

Kirk D Hanson

Ronald J Vidischak

Steve Rabin

Travis Evans

Stephen R Hessel

Improved apparatus and methods for non-invasively assessing one or more hemodynamic parameters associated with the circulatory system of a living organism. In one aspect, the invention comprises spatially compact 'bracelet' embodiment adapted to accurately place and maintain a sensor (e.g., tonometric pressure sensor) with respect to the anatomy of the subject, including an optional alignment apparatus which moveably captures the sensor to, inter alia, facilitate coupling thereof to an actuator used to position the sensor during measurements. The alignment apparatus also advantageously allows the sensor position to be maintained when the fixture is removed from the subject, such as during patient transport. A completely autonomous variant of the bracelet apparatus having internal power supply and wireless interfaces is also disclosed. Methods for positioning the alignment apparatus and sensor and providing treatment to the subject are also described.

Compact apparatus and methods for non-invasively measuring hemodynamic parameters

A set of modules from which custom passive backplanes can be assembled coplanarly couple together and are mounted on a rigid base plate which holds them coupled and coplanar. Each module has a plurality of orthogonally oriented card connectors. Preferably there is a CPU module into which is plugged a CPU card from which an ISA and a PCI originates. On one edge of the CPU module is an connector communicating with the ISA bus. This connector is for chaining together one or more ISA modules, each of which expands the ISA bus to three more ISA connectors. On an opposite edge of the CPU module is an connector communicating with the PCI bus. This connector is for chaining together one or more PCI modules, either 32-bit or 64-bit, each of which expands the PCI bus to three more PCI connectors. Power and ground can be jumpered from module to module or can be directly connected to any module.

Modular backplane

A motor control system employing a single Hall sensor 2 providing a position feedback signal to a control circuit 10 is disclosed. The control circuit includes a tach counter circuit 12, a ramp mode circuit 14, an interpolation circuit 16, and a commutation logic circuit 18. Drive signals are output to the motor windings by the commutation logic circuit 18. The control state defining the drive signals is advanced on the basis of the estimated rotor position. The estimate of the rotor position is determined by linearly interpolating between Hall signal transitions.

Servo motor controller using position interpolation

A magnetic tape drive for reading and writing data on magnetic tape in a cartridge of the type in which a driven roller in the cartridge moves tape past a read/write head in the drive and has a tape drive motor with a fan blade assembly which draws cooling air over the baseplate of the cartridge.

Heat diffuser for magnetic tape drive

A tape drive system for use with a removable tape cartridge. The tape drive comprises a slidable tray that moves the tape cartridge into a load position within the disk drive and into an eject position out of the disk drive. The tray is adapted to accept one of three cartridge types each type having a different physical size. When a selected cartridge is inserted into the tray and the tray is loaded into the drive, the entire cartridge is automatically moved into the drive enclosure. After the cartridge is moved into the drive, a door attached to the tray closes behind the cartridge such that no portion of the cartridge protrudes from the drive.

Tray loading cartridge tape drive for different sized cartridges

Tape drive

A magnetic tape drive for reading/writing data on magnetic tape in a cartridge of the type in which a driven roller in the cartridge moves tape past a read/write head in the drive has a spring clip which holds the motor plate of the tape drive motor on the chassis. The spring clip is secured on the chassis with a snap-on interference fit. The spring clip bears against the motor and also provides an electrical ground connection from chassis ground to the circuit board.

Clip for attaching tape drive motor to chassis

A magnetic tape drive for reading/writing data on magnetic tape in a cartridge of the type in which a driven roller in the cartridge moves tape past a read/write head in the drive, has a door opening lever disposed parallel to the direction of insertion of the cartridge. The lever is mounted on a pivot at one end on an axis perpendicular to the direction of insertion of the cartridge. The other end of the lever bears against the actuating portion of the door to open the door as the cartridge enters the drive. The lever is moveable about its pivot only to the side of the cartridge to accommodate an insertion of the cartridge into the drive.

Opening lever for magnetic tape cartridge door

A magnetic tape drive for reading and writing data on magnetic tape in a cartridge of the type in which a driven roller in the cartridge moves tape towards a read/write head in the drive which has a one-piece molded chassis. The chassis is suspended at three points in the pan. At each point an interference fit between a planar mounting member on the chassis and a slot in a support member in the pan provides an easy snap-in mounting for the chassis.

Snap-in chassis for tape drive

A magnetic tape drive for driving magnetic tape in a cartridge of the type in which a driven roller in an exposed edge of the cartridge moves the tape past a read/write head in the drive. A drive roller in the drive is rotated by a motor. The drive roller engages an idler capstan which, in turn, engages the driven roller in the cartridge.

Growing community of inventors

San Diego, CA, United States of America

Mark W Perona