Abstract: A cylinder lock having a body and a modified cam, the cylinder lock being adapted for moving an external element arranged to engage the modified cam, so that the external element slides axially on the cylinder lock body. In a preferred embodiment, the inventive cylinder lock is designed to utilize a helical cam which engages a movable sleeve, and this design is referred to as the HC cylinder lock. When operated by rotating the appropriate key within it, the movable sleeve can be moved in a linear fashion along the length of the HC cylinder lock thus converting rotational motion of the key to axial motion of the external element. This axial motion is used to position at least one locking bolt, of which the sleeve itself may be one, for the function of locking or unlocking a device. The streamlined design of the inventive HC cylinder lock enables efficient placement of a door lock within the hollow volume of a door.

Abstract: A method and assembly for preventing unauthorized manipulation of common cylinder locks, as executed by use of the principles of the Bumpkey or Blowgun methods. The pin assembly, containing a tumbler pin and a driver pin, is adapted so as to alter linear displacement thereof, by forming a recession in one of the pins contained in the pin assembly, and an engagement element, in the other of the pins, for engaging the recession, such that when an impact-driven blow of a given intensity is applied so as to linearly displace the tumbler and driver pins, the pin engagement element engages the pin recession, strongly binding the tumbler and driver pins together, thereby, blocking the shear line and, consequently, preventing unauthorized manipulation of the common cylinder lock.

Abstract: A cylinder lock having a body and a modified cam, the cylinder lock being adapted for moving an external element arranged to engage the modified cam, so that the external element slides axially on the cylinder lock body. In a preferred embodiment, the inventive cylinder lock is designed to utilize a helical cam which engages a movable sleeve, and this design is referred to as the HC cylinder lock. When operated by rotating the appropriate key within it, the movable sleeve can be moved in a linear fashion along the length of the HC cylinder lock thus converting rotational motion of the key to axial motion of the external element. This axial motion is used to position at least one locking bolt, of which the sleeve itself may be one, for the function of locking or unlocking a device. The streamlined design of the inventive HC cylinder lock enables efficient placement of a door lock within the hollow volume of a door.

Abstract: A pivotal bar-lock comprising an anchor hasp having a locking hub and a first locking element integrally formed with a first mounting plate; a locking hasp integrally formed with a second mounting plate and having a mating element and a second locking element formed therein; and a locking bar rotatably mounted on the anchor hasp, the locking bar having a cylinder lock encased therein and an engagement element formed therewith, the cylinder lock being operable such that when rotated into an unlocked mode, the locking bar is pivotally enabled to assume one of open, in-transit, and closed positions in interaction with the first and second locking elements, and when the cylinder lock is rotated into a locked mode, the engagement element of the locking bar engages the mating element of the locking hasp.

Abstract: A method and assembly for preventing unauthorized manipulation of common cylinder locks, as executed by use of the principles of the Bumpkey or Blowgun methods. The pin assembly, containing a tumbler pin and a driver pin, is adapted so as to alter linear displacement thereof, by forming a recession in one of the pins contained in the pin assembly, and an engagement means, in the other of the pins, for engaging the recession, such that when an impact-driven blow of a given intensity is applied so as to linearly displace the tumbler and driver pins, the pin engagement means engages the pin recession, strongly binding the tumbler and driver pins together, thereby, blocking the shear line and, consequently, preventing unauthorized manipulation of the common cylinder lock.

Abstract: A hand-held, motorized depilating device, introducing a novel mechanical design to provide improved depilating coverage and hair plucking efficiency, without requiring the user to pass the device over the same given skin, area numerous times. The hair-plucking assembly is rotatable about a shaft and includes at least two disc assemblies, each comprising a pair of complimentary discs, mounted on a hub, and having radially extending arms which terminate in a flattened peripheral portion, which when pressed against a corresponding portion forms a trap for the hair. At least one of the radially extending arms is bent so that the associated hair trap lies in a different predetermined plane than the other hair-traps associated with that disc assembly. This staggered arrangement results in improved depilating coverage.

Abstract: A hand-held, motorized depilating device, introducing a novel mechanical design to provide improved depilating coverage and hair plucking efficiency, without requiring the user to pass the device over the same given skin area numerous times. The hair-plucking assembly is rotatable about a shaft and includes at least two disc assemblies, each comprising a pair of complementary discs, mounted on a hub, and having radially extending arms which terminate in a flattened peripheral portion, which when pressed against a corresponding portion forms a trap for the hair. At least one of the radially extending arms is bent so that the associated hair trap lies in a different predetermined plane than the other hair-traps associated with that disc assembly. This staggered arrangement results in improved depilating coverage.

Abstract: A hair depilating device having a plucking assembly comprising at least two hubs, each accomodating at least one radially-extending swivel element mounted on the hub via a pin radially extending from the wall of the hub. The sidewall of the hub further includes a pinch plate, which projects radially outwardly therefrom. The radially-extending swivel element and pinch plate of a neighboring disc-like assembly define a V-shaped hair trap. The other side of the pinch plate forms a second V-shaped hair trap with a radial extension swivel element of a third opposing neighboring disc-like assembly. The opposing edges of the hair-traps at the rear end meet first, and only afterwards is the entire trap closed. This design provides a substantially reduced rotational closure distance, traveled by the hair-trap elements from the instant the trap begins to close until full trap closure.

Abstract: A motor-powered depilatory device employing a hair-plucking assembly containing a right hand actuator element and a left hand actuator element, identical in construction, each carrying opposing tweezer elements, which fit together in interleaved fashion, arranged to define hair-traps, with the hair-plucking assembly being rotatable about a central shaft and operable to close and open the hair-traps by a system of cams and springs. The device is designed to allow for self-alignment of the tweezer elements, ensuring that all tweezer elements close simultaneously during a revolution of the hair-plucking assembly, with no excessive applied force being required, thus enabling uniform distribution of gripping force among all hair-traps, despite inaccuracies in manufacture. Quality of hair plucking is thereby improved, where quality of plucking is defined as the percentage of hairs plucked versus percentage of hairs cut.

Abstract: A motor-powered depilatory device employing a hair-plucking assembly containing a right hand actuator element and a left hand actuator element, identical in construction, each carrying opposing tweezer elements, which fit together in interleaved fashion, arranged to define hair-traps, with the hair-plucking assembly being rotatable about a central shaft and operable to close and open the hair-traps by a system of cams and springs. The device is designed to allow for self-alignment of the tweezer elements, ensuring that all tweezer elements close simultaneously during a revolution of the hair-plucking assembly, with no excessive applied force being required, thus enabling uniform distribution of gripping force among all hair-traps, despite inaccuracies in manufacture. Quality of hair plucking is thereby improved, where quality of plucking is defined as the percentage of hairs plucked versus percentage of hairs cut.

Abstract: A cutter assembly for use in a shaver for shaving hair from the skin of a user includes a casing formed with a static blade configuration and a static bearing surface removed from the static blade configuration. Mounted within the casing is a moving cutter, which has a number of blades and a bearing surface formed to complement the static bearing surface. A spring element biases the moving cutter against the casing so that the complementary bearing surface slides against the static bearing surface, this sliding corresponding to a shearing cutting action of the moving blades relative to the static blade configuration. This reduces the frictional heating between the blades. Also described is a static blade configuration in which extended open-ended slots are reinforcement by transverse support ribs.

Abstract: A depilatory device having a manually grippable casing and enclosing a motor for driving a rotary roller (1) around a central shaft (10) disposed behind a window provided in the casing. The roller has one or several rows of tweezers, each row being formed by a first series of side-by-side, parallel movable blades (20) interposed with a second series of fixed disks or equally movable blades (40), as well as control elements (56-85) for moving the movable blades in translation in the longitudinal direction of the shaft so as to press them against the others in order to grasp the hairs to be extracted, then separate them. The blades (20, 40) of at least one series are cross-shaped, one pair of opposite arms (23) being at least partly curved in one longitudinal direction, the other orthogonal pair of opposite arms (23') being at least partly curved in the other direction, these blades being held by their respective support (10, 30) in their base (21, 41) at the junction point of the arms.

Abstract: A padlock for maintaining at least two hasps in engagement, including a two-part metal housing including first and second housing portions which are mutually hinged together so as to be pivotable between a mutually open orientation and a mutually closed orientation and a key-operated locking mechanism for selectably locking the first and second housing portions in the mutually closed orientation, the first and second housing portions each including hasp enclosing portions which are operative when the first and second housing portions are in the mutually closed orientation to maintain the hasps in engagement and to prevent disengagement of the first and second housing portions therefrom and when the first and second housing portions are in the mutually open orientation to permit disengagement of the first and second housing portions from the hasps and to allow the hasps to be disengaged.

Abstract: An electric shaver including an electric motor and a shaving head, driven by the electric motor, for cutting hair to be shaved, the shaving head including: at least one cutting blade having a cutting edge; at least one cutting plate defining a generally flat surface, which the cutting edge engages upon cutting through a strand of hair.

Abstract: A nail cutter including a cutting plate defining a non-sharpened cutting surface, a cutting blade and a driver for bringing the cutting blade and the cutting surface into cutting engagement with a nail disposed between the cutting blade and the cutting surface.

Abstract: A cylinder lock having a changeable key combination, the cylinder lock including a cylinder housing defining a bore, a plug arranged in the bore and defining a keyway and at least one plug pin disposed in the plug along at least one plug pin axis and communicating with the keyway, the at least one plug pin having a key engagement end face communicating with the keyway, the key engagement end face being configured such that rotation of the plug pin about the plug pin axis effects a change in the key combination of the cylinder lock and wherein the cylindrical housing defines at least one access opening which permits access to the at least one plug pin for selectable rotational positioning thereof for changing the key combination of the cylinder lock by means of rotation of the at least one plug pin about the at least one plug pin axis. Various keys suitable for use with the lock are also described and claimed.

Abstract: A device for removing body hair, which includes a housing a hair-plucking portion which is rotatably mounted to the housing. The hair-plucking portion includes one or more disc assemblies, each of which includes a pair of complementary discs, each of which has one or more radially extending arms which terminate in a flattened peripheral portion. When the corresponding portions of the two discs are pressed together, they form a trap for the hair. The disc assemblies also include a hub which accommodates a pair of discs, one on each of its axial faces. The hub has shoulders for engaging the arms of each of the discs so as to impart rotational motion to the discs upon the rotation of the hub. The hub also has at pairs of protrusions which extend axially beyond the plane of arms of each disc.

Abstract: A lice comb device constructed as a portable, hand-held housing containing a blower heater, to heat and direct a stream of heated air toward a set of comb teeth attached to the housing. Each of the comb teeth is formed with a hollow cavity having an opening at its end. The heated air stream is directed via the comb tooth and exits at the opening, where it is deflected away from the scalp by a concave surface, so that it impinges on lice and lice eggs attached near the hair root. The temperature of the heated air destroys the lice and lice eggs. An exterior cooling jacket portion surrounding the interior housing portion provides a thermal barrier by conducting the flow of cooler air, allowing for safe handling of the comb housing. A chemical or natural agent may be placed in a receptacle in the housing, so as to introduce vapors in the heated air stream, with the vapors directed via the comb teeth to improve the lice-killing effects.

Abstract: A catamaran trailer on a wheeled chassis supporting a lifting mechanism comprising two pairs of pivotable lifting arms spaced apart from one another at front and rear portions of the chassis. Each of a pair of lifting arms is integrally formed in a U-shaped construction with one of forward and rear shafts, with the shafts being connected in the preferred embodiment, by an arrangement of sprocket wheels and a chain. An operating handle attached at one end to the forward shaft causes it to rotate when the handle is raised or lowered. The sprocket wheels and chain transfer the rotational motion to the rear shaft such that front and rear lifting arms are raised and lowered simultaneously, to lower or lift the catamaran. The design enables lowering of the lifting arms below the top of the frame, which may be slid under low-profile catamarans, while maintaining a constant lifting force during operation regardless of the lifting arm angle.

Abstract: A hair removal device having a plurality of spring-loaded tweezers mounted on a rotary head and arranged to open and close during rotation, to trap and pluck skin hair over a relatively wide area. In a preferred embodiment, the rotary head spring-loaded tweezer design is provided as a hand-held, motor-powered depilatory device having a rotor provided with a plurality of tweezers having fixed and pivotable elements mounted on either side thereof, with the pivotable elements being operated by a set of roller pairs mounted so as to engage the tweezer upper ends. As the rotary head rotates about a shaft, the tweezer upper ends pass between the roller pairs and are depressed and released in synchronous fashion, causing them to open and close. When passed over the skin, the tweezers on the rotary head operate in two-sided fashion by opening and closing over a wide area, grasping skin hair in this area and plucking it as the tweezers close, to perform the hair removal function.