Abstract: An improved machine screw for engaging a correspondingly threaded aperture, comprising a threaded shank having a proximal portion and a distal portion. A head adapted to be rotated may be formed on a shank proximal end opposite the shank distal portion, such that the shank extends axially therefrom. The shank is deformable from a first position to a second position, for either (1) minimizing the contacting surface area between the shank and said aperture, and thereby allowing the machine screw to be easily insertable into said aperture, or (2) maximizing the contacting surface area between the shank and said aperture after the shank has been fully inserted into said aperture, and thereby making the hold between the screw and said aperture more secure. Such deformation of the screw occurs during its insertion into said aperture. It has been found that this deformation prevents screws of the present invention from seating improperly within threads of said aperture.

Abstract: A multifunctional device for use in endoscopic medical procedures, capable of suction, irrigation and aqua-dissection, comprising an elongated tube that is open at both ends, a pair of valves in communication with the tube such that the device may be used for either suction, irrigation, or aqua-dissection, and further having an optional shield which may be attached for the suctioning of large volumes of fluid therethrough. A removable seal is attached to the proximal end of the tube, which seal can be replaced with an optional end cap for allowing the tube to be used to transmit other instruments into the operative field, which other instruments can be used simultaneously with the device while the device is performing suction or irrigation.

Abstract: An improved downed water skier warning system for alerting the operator of a skier tow-boat and the operators of nearby boats when a skier falls into the water or releases the skier towrope. The system includes electronic water sensors for sensing when the rope-handle of the skier tow-rope lands in the water, and pressure sensors for sensing when the water skier releases the rope handle. The water and pressure sensors are in remote communication with audible and visual tow-boat operator alarms and visual "skier-down" warning indicators, for enabling said alarms and indicators when a "downed skier" situation occurs. The improved warning system is designed for use in conjunction with marine warning devices and indicators commonly available, such as the "skier-down" flag and bow or stem directional lights.

Abstract: An alarm clock system with a remote control is provided, which includes an alarm clock base unit with an audible alarm, and a remote controller for suspending, or delaying, operation of an activated alarm signal. A limited number of times in which such delaying of the alarm signal can be activated may be preselected, for stimulating the operator to rise out of bed in order to deactivate the alarm.