Abstract: A power-operated medical examination table having safety mechanisms for preventing injury or damage should someone or something become entrapped beneath the top of the table as it descends. The table includes a pedestal base having an extendable and retractable column. The top normally rests upon a load-bearing member which may be selectively raised or lowered under power to extend or retract the column. Should the top engage an obstruction during a lowering operation so that a separation occurs between the load-bearing member and the top, a sensor detects such separation and immediately interrupts power to prevent continued retraction of said load-bearing member. The table also includes at least one power-operated outer top section that is hinged to the central top section and is supported by a second load-bearing member and power drive arranged to constitute a secondary safety mechanism.

Abstract: An improved clamp for releasably and adjustably securing accessories, such as hanger rods for parenteral solution containers, to medical tables. The clamp has a generally cylindrical body comprising two main sections arranged in axial alignment: a base section and a cup section. Annular rows of intermeshing teeth are provided along the opposing end faces of the respective sections to prevent relative rotation of those sections unless such movement is accompanied by slight axial separation. The cup section includes a chamber terminating in an enlarged end opening that rotatably receives the cylindrical shank of a first operating knob. The knob is threadedly supported upon a hollow stem which is joined at one end to the base section and which extends axially through the chamber of the cup section.

Abstract: A medical examination table having a leg and foot support assembly that may be pivoted between a raised position, where it is generally coplanar with the seat section of the table, and any of a variety of lowered positions. The assembly includes a frame pivotally connected to the seat section and a footrest extension which is capable not only of being extended and retracted in the general plane of the frame but also of being pivoted into foot-supporting positions disposed at substantially right angles to the frame. Such adjustments are accomplished without the need for attaching or detaching any components of the assembly. Should the assembly be in a generally vertical position and engage an obstruction as the table is lowered (as where the table is equipped with a power drive for raising and lowering), the support assembly will retract automatically to avoid injury that might otherwise result.

Abstract: An auxiliary air fume hood provided with an improved airflow system for controlling the passage of air through an auxiliary air housing and orienting the flow of air in front of the face of the hood. The hood is designed to capture the auxiliary air through the face of the hood when the temperature of said air is as much as 20.degree. F. higher than the room air temperature.

Abstract: A fume hood having top and rear baffle systems fixedly secured within a housing of the fume hood to provide a passage for lighter than air fumes along the top baffle and a passage for heavier than air fumes along the rear baffle. A movable damper selectively connects these passages with an exhaust of the fume hood, and this movable damper is remotely controlled from outside the fume hood adjacent the work area of the fume hood. An operator can control fume flow within the hood while the work area is closed by a sash.

Abstract: A method of controlling room air flow into a horizontal sash type laboratory fume hood. The method includes laterally moving a damper across a room air vent by means of horizontal motion of the sash so that the vent opens and closes in an inverse manner to the sash.

Abstract: A laboratory fume hood with a horizontally slidable sash that is operatively coupled to and actuates a laterally movable damper in a manner inverse to sash movement. As the sash opens, the damper closes. Conversely, as the sash closes, the damper opens.

Abstract: A laboratory fume hood with at least two vertically movable sashes that are operatively coupled together by a sash lock that prevents both of the sashes from being opened at the same time. Opening of one sash automatically flips a pivoted lock into locking engagement with the other sash. Thus, one of the sashes must be closed before the other can be opened. This prevents the excessive waste of heated or cooled room air being sucked out through the fume hood.