Abstract: A desk comprises a desk top, four aprons and four legs. The aprons and the legs are fastened with the underside of the desk top. Two adjoining aprons of the desk are fastened by a fastening member having one end that is made integrally with one of the two adjoining aprons. Another one of the two adjoining aprons is provided with a locating portion for locating a free end of the fastening member. Each of four legs is fastened at the top thereof with two adjoining aprons and the fastening member.

Abstract: A water faucet fitting seat capable of producing a musical tone or animal howl comprises a base and a sound producing device. The hollow base is provided therein with a channel having one end serving as a water outlet and another end which serves as a water inlet and can be fastened to the outlet of a water faucet. The base is further provided therein with a recessed seat having a round hole in communication with the channel. The sound producing device is disposed in the recessed seat and is provided with a speaker, a sound control circuit board and a conducting switch which is connected with the sound control circuit board and is provided with two terminals spaced at an interval and located in the channel via the round hole of the recessed seat.

Abstract: A teapot has a handle provided therein with a receiving space shielded with a cover. The receiving space is intended to house therein a battery set and a circuit board comprising a sound-reproducing control circuit which is in turn composed of an integrated circuit for storing electronically a predetermined sound. The circuit board further comprises a control circuit and an automatic touch-control switch. The control circuit is intended to drive the electronic signals so as to reproduce the sound via a loud speaker housed in the cover. The touch-control switch is intended to actuate automatically the sound-reproducing control circuit at the time when the handle of the teapot is tilted to pour tea.

Abstract: A toy bird capable of drinking water and producing sound is composed of a base and a hollow tubular body. The base is provided with two limbs having a support hole located at the top thereof. The hollow tubular body comprises a head located at the top thereof, a spherical container located at the bottom thereof, and a middle tube located between the head and the spherical container. The middle tube is provided centrally and horizontally with an electrically conductive support rod having two ends received in the support holes of the two limbs. The base contains a sound device comprising a sound circuit, a speaker and batteries. The two limbs are provided respectively with a conducting element.

Abstract: The disclosed faulted current indicator ignores temporary overloads and transients by inhibiting any trip resulting from an overcurrent signal until a disabling circuit senses that a fuse or circuit breaker has reduced the line current to zero.

Abstract: The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and trips when the current exceeds a predetermined multiple above the average value of the current. A trip circuit senses the average value by periodic current sampling or by continuous current averaging. Maximum and minimum trip setting limit the excursion of the multiple of the average value.

Abstract: The disclosed fault indicator which senses current in a cable, resets in response to a minimum current and arms a trip arrangement in response to current rising a predetermined amount with respect to time. If the rising current also opens a circuit breaker within a predetermined time and cuts off current to the cable, the indicator trips. If no zero current occurs within the time period, the trip arrangement is disarmed for the next current rise.

Abstract: The disclosed faulted current indicator ignores temporary overloads and transients by inhibiting any trip resulting from an overcurrent signal until a disabling circuit senses that a fuse or circuit breaker has reduced the line current to zero.

Abstract: In the disclosed fault indicator a sensing device is arranged for location in the magnetic field surrounding a conductor, an electronic device responsive to the sensing device assumes a first state in response to the sensing device sensing a trip condition and remains in the first state until set to a second state, a signaling device coupled to the electronic device serves for generating a signal only in response to the electronic device being in the first state, and a timing device responsive to the electronic device assumes the first state serves for setting the electronic device to the second state after a predetermined period. The sensing device is an inductive sensor, preferably a coil with an axis transverse to the conductor. In one embodiment an inrush restraint circuit renders the electronic device insensitive to inrush currents.

Abstract: A fault indicator which senses current in a cable, resets in response to a minimum current and arms a trip arrangement in response to current rising a predetermined amount with respect to time. If the rising current also opens a circuit breaker within a predetermined time and cuts off current to the cable, the indicator trips. If no zero current occurs within the time period, the trip arrangement is disarmed for the next current rise.

Abstract: A faulted circuit indicator includes an inrush restraint circuit that suppresses a trip signal when an inrush current rises from below a minimum value to a trip value within a predetermined time and then drops again to another value such as the trip value. According to various aspects the restraint ends after a fixed time or after a variable time. According to another aspect a second trip circuit overrides the inrush restraint circuit when the current rises a given amount beyond the first trip value.

Abstract: In the disclosed fault detector, a casing has a u-shaped portion for receiving a cable and a portion extending from the u-shaped portion. A screw is mounted on said portion. A pressure device is mounted on the end of the screw and directed toward the u-shaped portion for holding the cable in the u-shaped portion. A magnetic lamination passes through the u-shaped portion. The pressure device is made of a magnetic material and a coil surrounds said laminations.

Abstract: The disclosed faulted current indicator senses current in a line having a breaker or fuse, and avoids tripping in response to current inrush signals by producing a trip signal in response to an overcurrent occurring for an overcurrent duration which is inversely related to the magnitude of the overcurrent and is faster than the overcurrent operating time of the breaker or fuse. In one embodiment, this involves operating a current protection device in response to an overcurrent occurring for a second overcurrent duration inversely related to the magnitude of the overcurrent according to a first characteristic, and adjusting the first overcurrent duration to follow a second characteristic having variations substantially the same as the first characteristic but having a shorter first overcurrent duration than the second overcurrent duration.

Abstract: In the disclosed outdoor lighting control, angular reflectors (52) direct vertical light passing through a translucent dome (38) onto a vertically oriented photocell (24) and a rigid vertically-adjustable sheet (54) between the photocell and the reflectors regulates the operating point of the photocell. The backs of the reflectors, and a socket (14) projecting vertically from a base (12) under the dome, shield the vertical photocell from horizontal light.

Abstract: A bellows type toy tambourine with a bellows containing a space enclosed by two ring members. One of these ring members has a plurality of slots along its circumference. Each of these slots contains two round metal plates for giving metal collision sound by shaking while it is played as a tambourine. One of the ring members has a plurality of flues. Each of these flues is incorporated with a tongue so that different tunes can be given when the bellows is expanded or contracted to permit air to pass through the flues; i.e., when it is used as an accordion. It is a novel structure of toy instrument and a combination of toy drum, tambourine and accordion.