Abstract: A partition frame assembly includes a lower partition frame having at least two elongated lower structural uprights. The lower partition frame defines an upper edge, and includes an upwardly-opening utilities channel extending adjacent the upper edge to permit lay-in of utility lines along the upper edge of the lower partition frame. An upper extension frame is positioned above the lower partition frame, and includes at least two elongated upper structural uprights, each of which is in vertical registry with the lower structural uprights. The partition frame includes first and second brackets, each of which rigidly interconnect a selected upper structural upright to a selected lower structural upright. Each bracket has a lower end rigidly interconnected with the selected lower structural upright, and an upper end rigidly interconnected with the selected upper structural upright.

Abstract: An extension panel for connection to a lower panel of the type having vertical uprights defining upper ends and including a utilities passageway extending along an upper edge of the lower panel for receiving utility conduits therein. The extension panel includes a pair of space-apart upright posts, and at least one beam extending between the posts and rigidly interconnecting the same. A pair of structural members extend downwardly from the lower ends of the posts to engage the lower panel and rigidly interconnect the extension panel and the lower panel. The structural members are laterally spaced-apart to define a downwardly-opening utilities opening therebetween. The utilities opening is positioned in alignment with the utilities passageway of the lower panel to permit utilities conduits to pass through the utilities opening when the extension is secured to the lower panel.

Abstract: The etching of a sacrificial silicon portion in a microstructure such as a microelectromechanical structure by the use of etchant gases that are noble gas fluorides or halogen fluorides is performed with greater selectivity toward the silicon portion relative to other portions of the microstructure by the addition of non-etchant gaseous additives to the etchant gas. An additional discovery is that non-etchant gaseous additives that have a molar averaged formula weight that is below that of molecular nitrogen offer significant advantages over gaseous additives of higher formula weights by causing completion of the etch in a shorter period of time while still achieving the same improvement in selectivity.

Abstract: A multi-position bracket includes a cantilever body defining first and second sides, and including rear and upper orthogonal edges. The rear edge includes at least one hook shaped to removably engage slots of an upright. The multi-position bracket further includes a mounting plate interconnected with the cantilever body in a selected one of first and second offset positions and a center position relative to the cantilever body. The mounting plate defines a center portion and first and second opposite side portions. The center portion of the mounting plate includes a center connector interconnecting the mounting plate in the cantilever body with the mounting plate in the center position for supporting adjacent side edges of a pair of side-by-side hang-on furniture units.

Abstract: A knock-down transparent module includes a module frame with a pair of vertical side frame members, each having an upper end and a lower end. Upper and lower horizontal frame members have opposite ends and extend generally horizontally between the vertical side frame members adjacent the upper and lower ends thereof and interconnect the same adjacent the upper and lower ends to define a central opening through the module frame. A transparent sheet is secured to the module frame and extends across the central opening. The module frame defines outer faces having at least one hook shaped to engage an opening in a partition frame member, thereby permitting the module frame to be removably supported within a partition.

Abstract: An expandable/contractible furniture component is configured for attachment to a partition system to provide an adjustable structure adapted to adjust with the partition system as the partition system is adjusted to provide different office sizes. The furniture component includes a corner shelf attached to the partition system, and in-line shelves also attached to the partition system. The in-line shelves are telescopingly adjustable into the corner shelf so that the plan dimensions of the shelves are adjustable concurrently with the partition systems to provide storage surfaces and shelves that extend and completely fill at least one dimension of the office. An in-line telescoping straight shelf construction and a two-way telescoping corner shelf construction are also disclosed.

Abstract: A knock-down hang-on storage unit for portable partition systems includes first and second end members with shelf support flanges having inwardly protruding horizontal support legs and vertical support legs that define narrow vertical slots. Forward edges of the end members have rearwardly opening notches that capture the forward edge of a shelf that extends horizontally between the end members. The shelf includes first and second depending attachment flanges along opposite sides thereof that are inserted into the slots. The rear portion of the shelf is supported on the horizontal support legs adjacent upstanding tabs on the shelf support brackets to horizontally capture the shelf member between the end members and provide a fastenerless interconnection therebetween.

Abstract: A furniture arrangement includes a hang-on furniture unit such as a worksurface, an upright support such as an office partition panel, and a system of brackets adapted to lockingly engage the upright support and support the hang-on furniture unit. The system of brackets includes a cantilever bracket with teeth adapted to engage slots in the upright support, and an upper edge for supporting the hang-on furniture unit. The system of brackets further includes a locking bracket adapted with second teeth, the first and second teeth being adapted to form an interlocking arrangement in the slots in the upright support. The locking bracket also includes a safety tab that engages a tab mount on the upper edge of the cantilever bracket, the safety tab being configured so that the second teeth must be properly located in the slots in order to allow the safety tab to engage the tab mount.

Abstract: An apparatus for measuring heart rate is provided which comprises a sensor for generating a signal which includes the biopotential signal produced by a heart. This signal is filtered, amplified and digitized. A microcomputer autocorrelates the digitized signal. A plurality of signal indication routines then scan the autocorrelated output for the presence of periodic signals. Each of the signal indication routines uses different search criteria, such as peak and waveform detection, and generates a candidate heart rate. An arbitrator then selects one of the candidate heart rates according to predetermined criteria. These criteria include the value of previously selected heart rates.

Abstract: An induction loop vehicle detection system and method of making and installing such a system are disclosed wherein the conduit sections containing the induction loop are preformed and prewired integrally with all interconnects by using removable expansion joints to assemble sections of prewired and sealed conduit in any desired configuration. The expansion joints can be removed after assembly to enable the induction loop to be folded down for shipment. The expansion joints also enable longitudinal displacement of the induction loop conduit due to thermal differential expansion during installation and during extreme changes in temperature over the lifetime of the system, thereby preserving the integrity of the roadway and fault free operation of the induction loop. The wires forming the induction loop are completely sealed within the conduit with an asphalt rubber material thereby precluding any moisture penetration.

Abstract: An electronic readout assembly in which the readout unit is captured in a frame which is secured in upright display position on a circuit board which in turn is slideably seated in a bracket adapted for utilization mounting, the readout being of the flat plate type having an array of contact prongs projecting from a bottom edge thereof, and the frame having a bottom opening through which the prongs engage with circuit connections on the circuit board. The frame also has open portions which expose the prongs to convenient access for test purposes in a region between the frame and circuit board.