A hospital mattress which is flexible and permits head elevation and knee flexion has removably securable inserts which can be repeatedly removed or replaced and secured without requiring substantial displacement of the patient. A body of resilient material, preferably closed-cell polymer foam, is utilized to form the mattress. The portion of the foam body disposed to underlie a predetermined portion of the patient’s body, typically the patient’s trunk, is removed. A flexible, generally impervio…

Rotating anode x-ray generating apparatus including a mechanism which utilizes the rotational motion of the anode (20) to increase the effective rate of coolant with respect to the anode heat exchange surface (43).

An improved battery powered quartz timing control circuit that drives a stepper motor, featuring a battery heated by a temperature-responsive battery heater which is activated when the ambient temperature in the vicinity of the battery drops below a predetermined temperature.

An improved mausoleum includes a support frame made of fiberglass structural members and a plurality of sealed fiberglass caskets which are proof against deterioration. The mausoleum according to the invention eliminates the need for venting and drainage, greatly simplifies construction of the mausoleum, and reduces funeral expenses. In preferred embodiments, each of the fiberglass caskets has a pair of central lateral flanges, and the support structure includes a plurality of pairs of parallel …

An inflatable game device comprising an inflatable body including a ballast to maintain the inflatable body in a normal attitude, and including a pocket adapted to receive an object. The pocket is integrally formed with the body and includes a constricted portion to facilitate retention of the object in the pocket once received.

An apparatus adaptable for use with an analog-digital-analog conversion device for effecting communications between an analog device and a digital device, the analog-digital-analog conversion device converting incoming analog signals received from the analog device to incoming digital signals, and for converting interpolated outgoing digital signals to outgoing analog signals. The apparatus has a digital signal processing circuit for decimating the incoming digital signals and providing a decima…

To prevent a halation phenomenon from an endoscopic image of a laser-illuminated body cavity of a biological body under medical examination, an electronic endoscope apparatus comprises an electronic scope unit and a main endoscope unit coupled to the electronic scope unit. The electronic scope unit includes: a laser mirror upon which laser light reflected from the laser-illuminated body cavity of the biological body under medical examination is incident, for refracting a first light component ha…

An interferometer modulator (10) has a housing (12) that encloses a moving mirror (14) attached to a mirror arm (18) which is suspended by links (34, 36) from the housing (12). The links (34, 36) are attached to the mirror arm (18) at swinging pivots (42, 44) and are attached to the housing (12) at fixed pivots (46, 48). One of the fixed pivots (46) is mounted within an adjustable block (68) the position of which may be adjusted by the turning of adjust screws (82, 76). Turning of one of the adj…

A method of installing a roofing fastener including a screw and a stress plate into a multilayered roofing structure involves bonding the outer surface of the screw to the inner surface of the plate. Such a bond may be formed by spin welding as the screw is installed in the roofing structure. The fastener is thereby installed and bonded in the same operation. A fastener assembly useful in the foregoing method includes a screw and plate having welding surfaces made of a thermoplastic resin.

The invention is concerned with a high-density adsorbent comprising a compacted mass of high surface area carbon particles bound together with a binder and defining a network of substantially unobstructed micropores, the mass of carbon particles having been compacted under a pressure sufficient to cause a reduction of about 50 to about 200% in bulk volume of the mass and a corresponding increase of about 50 to about 200% in density, thereby providing a gas storage capacity increase of about 20 t…