Abstract: A combination of a drill and a device for securing the drill in a chuck which has a body with a central passage and three slots inclinedly defined in a periphery defining the passage. Three clamping members are inclinedly and movably received in the slots and engaged with an annular member rotatably mounted to the three clamping members. The body has at least one aperture defined radially therethrough which communicates with the passage in which the drill is received which has a plan surface defined in an outer periphery thereof such that a positioning member received in the aperture contacts the plan surface to position the drill in place.

Abstract: An electrical drive includes a housing mounted on a crank axle for partially receiving the axle. A driven ratchet base is rotatably mounted on a first end portion of the crank axle and includes a first end portion fixedly engaged with a chain wheel and a second end portion formed with a driven bevel gear. A drive bevel gear meshes with the driven bevel gear for rotating the driven ratchet base. A drive ratchet base is rotatably mounted on a mediate portion of the crank axle and includes a first end portion engaged with the second end portion of the driven ratchet base for rotating the driven ratchet base along one direction only, and a second end portion formed with a first engaging bevel gear. A ring element is fixedly mounted on the mediate portion of the crank axle to rotate therewith, and two pivot axles each extend from an outer wall of the ring element and each have a second engaging bevel gear rotatably mounted and meshing with the first engaging bevel gear.

Abstract: A PWM controlling circuit includes a signal generator and two PWM controllers. The signal generator comprises an oscillator, a plurality of inverters, and two RC delay networks. The oscillator and the inverters are composed of elementary elements, respectively, such as diodes, resistors, inverters and capacitors. The PWM controlling circuit in accordance with the present invention can be implemented with low cost, and the duty cycles thereof are not limited to 50%.

Abstract: A heat dissipator accessory for a notebook computer, which is concealed in an expansion slot of a notebook computer to effectively dissipate heat generated by the computer, is disclosed. The external heat dissipator for a notebook computer comprises a cooling module inserted into an expansion slot of the notebook computer. The cooling module includes a flat body having a connector electrically connected with a signal socket disposed in the expansion slot of the notebook, a cover disposed on the flat body and an air duct attached on the cover and mounted to the flat body. The flat body defines therein a chamber for receiving a fan and an air passage in communication with the chamber. The air passage has an air deflector transversely mounted at an end thereof for changing the direction of horizontal air flow. The cover defines a hole aligning with the fan chamber of the flat body and forming thereon a beveled portion corresponding to the air deflector.

Abstract: A constant-voltage clamping forward conversion switching power supply is disclosed, which can prevent each of a magnetic saturation phenomenon in a main transformer, an excessive high voltage of a main switching transistor, and a shift effect of an input voltage, and can increase the duty cycle and improve an operating efficiency.

Abstract: An ink-replenishable signet comprises a body, a reciprocal shield movably receiving the body, a grip portion mounted on the reciprocal shield and a bottom cover mounted to a bottom of the body. The body includes a pedestal, two rectangular tubes extending integrally and upwardly from the pedestal and a post formed between the two rectangular tubes. The pedestal further has two stepped portions respectively formed at two sides thereof and an ink reservoir and a stamp block received therein. A stop is mounted to the two stepped portions of the pedestal for restricting the movement of the stamp block. The expansion has an enclosure extending integrally from a top face thereof. The top face of the reciprocal shield defines an aperture and two holes therein for the post and two rectangular tubes of the pedestal to be respectively extending therethrough and then is engaged with a clip member.

Abstract: A supporting device for a golf bag stand includes a supporting plate, a tubular receiver integrally formed with the supporting plate and a bottom plate having a concavity defined therein. The concavity is sized and configured to mate with the struting plate, such that the struting plate is able to be snugly received within the concave space. Furthermore, a first channel is defined within the struting plate and a second channel is defined within the bottom plate, such that when the supporting plate is received within the concavity of the bottom plate, a pin is able to pivotally combine the bottom plate and the supporting plate through the second channel and the first channel respectively, which provides the golf bag an ability to adjust to any terrain when the golf bag is held in a substantially upright position.

Abstract: A method and apparatus are disclosed for characterizing multipath-induced distortions in the autocorrelation function of a correlation receiver in order to reduce effects of these multipath-induced distortions on the accuracy of detecting the time of arrival of a received signal. The magnitude of the multipath-induced errors adversely affecting the shape of the autocorrelation function is estimated in real time, for example, through the use of secondary scanning correlators whose time base is independent of a typical receiver's detection-oriented correlators. This error is subtracted from the detection-oriented correlator's timing, thereby yielding a more accurate autocorrelation function.

Abstract: A double-acting hydraulic cylinder for use in an exercising apparatus to provide a resistance to a user of the exercising apparatus is disclosed.

Abstract: A mass programmable FM assistive listening system preferably consists of an FM transmitter adapted to send audio signals on a selected one of a plurality of predetermined available channels. The system includes a plurality of portable receivers which may be mass programmed to receive a selected one of said predetermined channels from a membrane style keypad. The audio signal is preferably stereo, sound equalized and within the frequency range of from about 72 to about 76 megahertz.

Abstract: Apparatus that is carried on a land vehicle, a marine vehicle or vessel, or an airborne vehicle or vessel for notifying others that a vehicle accident or other abnormal situation has occurred and for notifying others of the location of the vehicle at the time of the accident. The vehicle carries an distance measuring system (DMS) signal antenna and receiver/processor that receives DMS-type signals from one or more DMS signal broadcasters and determines the present position of the vehicle, plus an activatable transmitter. The vehicle also carries an abnormality sensing means that senses the occurrence of an accident or other abnormal situation involving the vehicle or a vehicle occupant. When an abnormal situation is sensed, the abnormality sensing means automatically activates the transmitter, which then communicates the fact that an abnormal situation has occurred and the location of the vehicle at the time the event occurred.