Abstract:
An electromagnetic-field-focusing remote-field eddy-current probe for inspecting anomalies in a conducting plate. The probe is designed to have the electromagnetic energy released from an excitation coil penetrate through the plate twice, so that the signals received by one or more receiver units (pickup coils, magneto-resistors or SQUIDs) have passed twice through the plate wall; from one side of the plate at the excitation coil to the other side, then back to the original side at the receiver units. The probe detects flaws, with good and substantially equal sensitivity, irrespective of their depth in the plate. It can detect, from one side of a plate, flaws located on the other side of the plate, which is useful for inspecting the bottom plate of a huge tank which is sitting on the ground. The thickness of inspected plates can go up to one inch for aluminum plates and to 3/8" for ferromagnetic plates. The probe generates a periodic magnetic field. The excitation coil and an auxiliary device direct the electromagnetic field into the plate being inspected. In one embodiment, the auxiliary device is a coil driven by a signal having a phase and amplitude relationship to the excitation coil's signal. The excitation and the receiver units are covered by one or more shields made of highly conducting materials, or of highly conducting materials laminated with alternating layers of ferromagnetic materials.
Abstract:
A shelving structure may include a predetermined number of shelf boards, rear plates, connecting members, and frame members. The shelf board is a rectangular board with two expanded side edges. The rear plate is a hexagonal plate with corners modified into arc-shaped inward recesses and with U-shaped slots extending inwards in the middle of the recesses. The U-shaped slot has continuous undulating bounding edges on both of its sides. The connecting member has two clamping planes linked by a base. The frame member has three equally distributed holding slots extending through both ends. Each outer surface between two neighboring holding slots of the connecting member has a recessed strip with regularly spaced extension plates for installing additional components. The shelving structure can be readily installed or uninstalled and can be modified or rearranged according to space restraint or other requirements.
Abstract:
A combination rack structure includes a predetermined number of support plates, connecting strips and side frames. Each of the support plates has a rectangular shape. Each of the connecting strips is provided with three holding grooves each longitudinally extended through each of the connecting strips. Each of the connecting strips has a periphery provided with elongate recessed portions each located between any two of the holding grooves. Each of the recessed portions is provided with a plurality of extensions which are perpendicular to an axial direction of each of the recessed portions and are spaced from each other with a proper interval. The extensions are used for holding and resting. Each of the side frames is bent to have a hexagonal shape. The support plates are combined with the connecting strips to construct a hexagonal rack.
Abstract:
A toy is provided that has a dynamo for converting manual movement into an electrical charge for the dynamo located within a housing. A miniature vehicle is induced to locomote through receipt of the electrical charge. A dock is provided for selectively creating an electrical coupling of the vehicle to the dynamo to transfer the electrical charge and decoupling to allow the vehicle to locomote. A charge storage device and an electrical motor in the vehicle allow for prolonged vehicle locomotion separate from the charge transfer by the dynamo. A toy is also provided that has a dynamo for converting manual movement into an electrical charge, the dynamo located within a housing. The dynamo transfers an electrical charge to a wheeled miniature vehicle through an electrically conductive circuit about which the vehicle travels. Additional amusement functions of LED light output or speaker auditory output are optionally provided.
Abstract:
A toy is provided that has a dynamo for converting manual movement into an electrical charge for the dynamo located within a housing. A miniature vehicle is induced to locomote through receipt of the electrical charge. A dock is provided for selectively creating an electrical coupling of the vehicle to the dynamo to transfer the electrical charge and decoupling to allow the vehicle to locomote. A charge storage device and an electrical motor in the vehicle allow for prolonged vehicle locomotion separate from the charge transfer by the dynamo. A toy is also provided that has a dynamo for converting manual movement into an electrical charge, the dynamo located within a housing. The dynamo transfers an electrical charge to a wheeled miniature vehicle through an electrically conductive circuit about which the vehicle travels. Additional amusement functions of LED light output or speaker auditory output are optionally provided.
Abstract:
A battery charger amusement has a receptacle adapted to receive a rechargeable battery, an electronic circuit monitoring battery charge status, and a mechanical movement signal activated upon charge status attainment. The battery charger can include a motion actuator so as to move during the battery recharge process. The device is intended to encourage the use of rechargeable batteries over a disposable counterpart.
Abstract:
A shelving structure may include a predetermined number of shelf boards, rear plates, connecting members, and frame members. The shelf board is a rectangular board with two expanded side edges. The rear plate is a hexagonal plate with corners modified into arc-shaped inward recesses and with U-shaped slots extending inwards in the middle of the recesses. The U-shaped slot has continuous undulating bounding edges on both of its sides. The connecting member has two clamping planes linked by a base. The frame member has three equally distributed holding slots extending through both ends. Each outer surface between two neighboring holding slots of the connecting member has a recessed strip with regularly spaced extension plates for installing additional components. The shelving structure can be readily installed or uninstalled and can be modified or rearranged according to space restraint or other requirements.
Abstract:
A brake device of a scooter of the present invention includes a scooter body having a front steering axle provided with a front wheel and a seat hole, and an axle pivotally provided with a rear wheel, and a brake pedal pivotally mounted on the scooter body by a pivot member and provided with a brake pad. When the brake pedal is trodden, the brake pad is rested on the rear wheel. A brake connecting member has a first end rested on the bottom of the brake pedal. The brake connecting member is pivoted by a ring to rotate. The brake connecting member has a second end connected to a first end of a pulling member. A front brake member is pulled by a second end of the pulling member. The front brake member is pivotally mounted on the seat hole of the scooter body, and is provided with a brake pad. When the brake pedal is trodden, the brake pedal and the front brake member are respectively urged on the rear wheel and the front wheel synchronously by a drawing action of the pulling member.