Abstract: A kayak comprises a hull with a relatively narrow cross sectional underwater width for increasing speed and efficiency of the kayak moving through water and first and second pairs of convex surfaces for providing kayak stability.

Abstract: A method and apparatus adapted to utilize means for controlling a plurality of energy pulses to repetitively increase and decrease the temperature of a target tissue with a prescribed timing for each temperature change and specific peak temperature for each temperature change to provide selected necrosis of diseased cells.

Abstract: Electric dry shaver comprising a cutting head having at least one movable cutter, an electric motor for driving the movable cutter and electric circuit means for the motor, characterized in that the motor has a stator/rotor assembly of which at least part of the stator is integrated with a frame or housing for the shaver, and in that the frame or housing serves as a reference mounting member for the cutting head, electric motor and electric circuit means.

Abstract: A horological device is provided with an alarm switch in the form of an alarm wheel having a conductive path extending from a topside of the wheel to a bottom side of the wheel. The alarm wheel is adapted to operate in an alarm circuit arranged to generate audible signals at a predetermined time. An alarm setting pinion is engaged with the alarm switch to prevent undesired movement of the alarm wheel in case of mechanical shock.

Abstract: A shaving implement for raising and holding low-lying hairs in an erect position for cutting by a blade edge and for distributing shaving force which includes resilient hair raising means spring mounted on a flange having a skin contacting surface or guard member adapted to distribute shaving force to substantially prevent stretching of a user's skin. The resilient hair raising means have barbed ends projecting beyond and substantially normal to the skin contacting surface of the flange in close proximity to the blade edge.

Abstract: A charging circuit for charging a low voltage battery from an AC supply, said circuit comprising a full wave bridge rectifier, each leg of the bridge including a rectifying element, and means for providing a visual indication of normal operation of said charging circuit, wherein one of said rectifying elements is a light emitting diode to serve as said means for providing a visual indication.

Abstract: An apparatus for measuring the incremental grooming force experienced by a hair tress during combing, and supplying an instantaneous readout of that force. The apparatus includes a comb or brush with strain gages attached to it which change resistance when mechanically deformed. The change in resistance is electrically measured to provide an indication of incremental grooming force. A continuous monitor is connected to the resulting electrical signal to provide an instantaneous indication of incremental grooming force. A method for using the apparatus to reduce the creation of split ends during hair grooming is also provided.

Abstract: A vibratory electromagnetic motor includes a stator unit, a first rotatable armature and a second rotatable armature. The armatures and the stator unit are arranged to reduce motor noise and vibrations when the armatures synchronously rotate in opposite directions in response to a magnetic force. A resilient coupling member is connected between the armatures for combining drive power generated by the first rotating armature with drive power generated by the second rotating armature.

Abstract: A hair clipper, particularly for incorporation in a battery powered electric dry shaver, comprising first and second mutually slidingly reciprocable and inherently slightly resilient toothed cutters resiliently urged to assume a similar curvature to one another along the direction of reciprocation to tend to render uniform the pressure distribution therebetween.

Abstract: A manually operated electrical switch includes a first conductor and a second conductor. The second conductor is telescopically coupled to an electrical contact arranged to be spring biased against an opposing surface. The second conductor is attached to an electrical insulator and assembled in a housing so as to be pivotally movable over an arcuate path between a first position in which the first conductor is in electrical contact with the second conductor and a second position in which the first conductor is electrically insulated from the second conductor.

Abstract: An electric shaver is arranged to alleviate a cause of psuedofolliculitis by cutting low-lying facial hairs to a predetermined length. The electric shaver comprises a movable cutter and a perforated shaving foil having ribs protruding from a surface normally placed in contact with a user's beard. The shaving foil is arranged to move simultaneously with the cutter so that the ribs might lift and direct low-lying facial hairs through the perforations in the foil for shearing by the moving cutter.

Abstract: This invention concerns a foil for electrically or mechanically operated dry shavers.More especially the invention concerns a foil made from a sheet having perforations and bars between the perforations, the bars being dished in cross-sectional profile, the base of the dished profile being flat and of uniform thickness (t) while the edges extend at an obtuse angle .alpha. to the base, terminating in coplanar faces parallel to the base, the width of the face (w) being not greater than the thickness (t).The foils are especially suitable for battery operated razors, in which the reduced thickness (t) leads to reduced power consumption and longer battery life.

Abstract: A dry shaver foil head comprising a frame having arcuate support surfaces at opposite ends, and a part-cylindrical foil having opposite arcuate end portions respectively seated on said arcuate support surfaces. One longitudinal edge portion of the foil is attached to the frame by hooks, on the reinforced foil edge portion, hooked over a rigid rod also serving as the hinge pin which hinges the shaver head to a shaver body. The other longitudinal edge portion of the foil is attached to the frame by hooks, on the reinforced foil edge portion, hooked over a resilient rod at points spaced from points where the resilient rod is held by the frame. The resilient rod is thereby resiliently curved to maintain the foil in a state of significant tension to seat the foil on the frame in a substantially rigid part-cylindrical shape.

Abstract: An electric dry shaver comprising a part-cylindrical cutting foil, an inner cutter provided with arcuate cutting edges which cooperate with said foil, and drive means to drive said inner cutter in linear reciprocation parallel to the axis of said part-cylindrical foil. The drive means includes a part-spherical driver head articulated to said inner cutter at a center of articulation substantially coincident with the center of gravity of said inner cutter and the center of application of the resultant of the frictional forces acting between said inner cutter and said foil during reciprocation of said inner cutter by said drive means is substantially coincident with said center of articulation and with said center of gravity.

Abstract: An electric dry shaver in the form of a generally rectangular parallelepiped and comprising a flexible part-cylindrical curved cutting foil extending along one end face and inclined towards the front face of said parallelepiped. A cutter body has cutter blades having curved cutting edges and extending in planes perpendicular to the foil cylinder axis. A spring acts on said cutter body to urge said cutting edges into engagement with said foil. A rotary electric drive motor has its axis of rotation extending between said opposite end faces. A cutter support member carries said cutter body and is mounted to a shaver body member by a pair of spaced parallel leaf springs, each said leaf spring lying when unflexed in a plane parallel to said opposite side faces. The electric motor has a rotary output member adapted to drive said cutter support member in generally longitudinal oscillation with flexing of said leaf springs.

Abstract: A ball holder for a ball-point pen is arranged to have a ball socket with a ball seat having a plurality of convex surfaces formed on concave shoulder surfaces. A writing ball inserted in the ball socket is supported by a single ball contact point on each of the ball seat convex surfaces. Concavities are provided between adjacent convex surfaces and shoulder surfaces for collecting and supplying ink to a surface of the writing ball.

Abstract: An electric dry shaver comprising a cutter mounted for arcuate oscillation about an axis to effect a shaving action, a driver secured to said cutter for arcuate oscillation about said axis, a trimmer element mounted for linear reciprocation parallel to said cutter axis to effect a hair trimming action, and a coupling mechanism selectively engageable between said driver and said trimmer element to convert arcuate driver oscillation into linear trimmer reciprocation via the intermediary of a cranked lever mounted for pivotal oscillation about an axis perpendicular to both the cutter axis and the trimmer element.

Abstract: A hair clipper is arranged to alleviate one cause of pseudofolliculitis. The hair clipper comprises a motor for reciprocally moving a first cutter against low-lying facial hairs causing these hairs to become erect for cutting above the skin line between the moving first cutter and a stationary second cutter.

Abstract: The invention concerns a method for producing foils for dry shavers.The method of the invention includes forming a layer of photosensitive material on each side of a metal plate, exposing each side to light to produce a pattern of exposed and unexposed areas, corresponding to perforations at one side and recesses in the backs of the bars of the foil on the other side, etching each side, them removing photosensitive material from the front side and carrying out further etching until the foil is completely perforated.The invention is especially suitable for forming foils for battery operated dry shavers.

Abstract: A portable electric curling iron has a hollow handle having an open end. An electrically heated hair curling member is arranged for telescopic movement between a retracted storage position within the handle and an extended use position wherein the member projects from the handle through the open end thereof. Movable electrical connector plug means are provided on the iron for connecting the electric heating means associated with the hair curling member to a power source. Means are provided for automatically moving the connector plug means between a retracted plug position wherein the plug means is substantially entirely within the handle and an extended plug position wherein the plug projects from the handle in response to the telescopic movement of the hair curling member into and out of the handle.