Abstract: The flotation device with hand-operated propulsion structure comprises a hull with right and left hand cranks. The hand cranks are each connected to rotate its own propeller so that steering is achieved by different cranking and propulsion is achieved by cranking on both manual cranks. In addition to the hull with cranks and propellers, a survival suit is provided with corresponding attachment for the securement of flotation and propulsion devices thereto.

Abstract: The mounting bracket has a flange which reaches in between portions of the open office structure and releasably engages in the slots in the post of the open office structure. The releasable engagement comprises tee-shaped hooks, configured so that they engage reversibly in the slots in either of the posts on the left or right side of the office entryway opening. A web on the flange carries an identification plate.

Abstract: An exercise device has a base, an exercise platform (which can be split into a left and right platform) and two or more springs that connect the base and the exercise platform(s) and hold the exercise platform(s) substantially parallel to the base when the exercise device is not in use, preventing the exercise platform(s) from coming into contact with the base when the exercise device is in use and allowing the position of the exercise platform to vary relative to the base as weight is applied to the exercise platform(s) at different points apart from a center point of weight balance while straps can be used to stabilize or selectively vary the center point of weight balance.

Abstract: A needle assembly includes a sheath into which a hypodermic needle is withdrawn in a protected position. Installation of the needle assembly onto a Luer lock causes the needle to be thrust forward out of the sheath. A spring urges the needle to the withdrawn position. An elastomeric ball in the needle assembly provides sealing.

Abstract: The bathtub/hot tub is positioned in an opening in the wall of a house. The opening has the same shape as the plan view of the bathtub/hot tub. For a circular bathtub/hot tub, the opening is semicircular. A movable cover in the form of a quarter hollow sphere is pivoted to move from the position where it covers the outer half of the bathtub/hot tub while leaving the inner half inside the house wall accessible. It is movable to an inner position where it seals against the inner portion of the bathtub/hot tub and against the opening in the house wall to leave the bathtub/hot tub accessible from outside of the wall. In either case, the inside of the house is closed against the outside ambient conditions.

Abstract: A series of vertically overlapping pockets is sewn onto an attachment panel which is sufficiently wide to be sewn into the trouser leg at the inseam and outseam. It is long enough to be seamed into the waistband at the top. When the attachment panel is sewn into the fabric of the trousers, the series of overlapping pockets is positioned at the knee. A foam kneepad is inserted into a selected pocket. Each pocket has a top closure such as a hook-and-loop fastener to hold the kneepad in place and close the top of the pocket. Using different pockets selectively positions the kneepads so that they protect both the knee and the adjacent shin.

Abstract: Two nasal breathing devices are supplied with continuous positive airway pressure for alleviation of sleep apnea. The two nasal breathing devices are each supported on a spiral flexible supply tube. The supply tubes pass through a block. The block is supported on the patient's head below his nostrils. A stop nut is threaded on each of the spiral flexible supply tubes. The supply tubes and nasal breathing devices are individually adjustable by rotating the stop nut on each of the supply tubes. In this way, the nasal breathing devices are individually adjusted for proper nasal contact and sealing.

Abstract: The portable flexible exercise device is a quadrilateral with handles at the corners. Compression members extend between the adjacent handles and are pivoted thereto. A tension member is engaged so that one pair of opposite handles is resiliently urged apart while the other pair is resiliently urged together so that the exercise device can be utilized in different forms of exercise.

Abstract: A transmitting controller is connected to a powerline and on command places a reference signal and a series of signal pulses in the powerline at a series of signal timing positions related to zero voltage crossing points so that the signals pulses are substantially in the powerline temporal quiet zone. The receiving controller is connected to the powerline and has a filter circuit therein which filters away the powerline AC signal and noise to leave the reference and signal pulses. The signal pulses are compared to the position of starting reference pulses to determine in which signal timing position the pulses have occurred. Digital data is communicated over the powerline in accordance with the nature placement of the data pulses related to the reference pulse positions. The timing zone for transmission and signals is preferably about 500 to about 1000 microseconds away from zero voltage crossing.

Abstract: A series of vertically overlapping pockets is attached to the fabric of the trousers adjacent the knee. The open ends of pairs of pockets face each other and a foam or other resilient kneepad is partially inserted through the open ends into a selected pair of facing pockets. Using different pairs of facing pockets selectively positions the kneepads on the trousers at selected vertical locations. The panels forming the pockets may be positioned on the inside or on the outside of the trousers adjacent the knee, and may be preassembled to form a separate structure for attachment to the trousers.

Abstract: A transmitting controller is connected to an AC powerline and on command places a series of signal pulse in the powerline in a series of signal timing windows related to zero voltage crossing points so that the signal pulses are in the powerline temporal quiet zone. The receiving controller is connected to the powerline and has a filter circuit therein which filters away the powerline AC signal and noise to leave the sensed pulses. The sensed pulses are compared to zero voltage crossing points to determine in which signal timing window the pulses have occurred. Digital data is communicated over the powerline in accordance with the placement of the signal pulses related to the particular timing window.

Abstract: The garment hanger has first and second shoulder bars and has first and second telescoping arms thereon which permit shoulder width adjustment of the garment hanger for proper support of garments having different shoulder width. In one configuration, the hanger is supported by a support tube on the top of the hanger, with the support tube telescopically engaging on an outwardly directed hanger anchor in the closet.

Abstract: The adjustable exercise therapy device of this invention has first and second handles suitable for manual grasp and a single bungee cord passing through both handles. The bungee cord is adjustably attached to one of the handles. Between the handles, a tube holds the two stands of the bungee cord together. The distance between the handles can be adjusted so that the device is suitable for use as an exercise device for people of limited strength.