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360results about How to "Improve fastening force" patented technology

Screwdriver device and screw

A screwdriver device where rotational torque directly applied to the device by an external force can be drastically reduced in screw tightening operation. The screwdriver device has characteristic construction means having a device body (1) and a male-type head section (21). The device body (1) is constructed by layering over each other piezoelectric elements (3, 4) in a screwdriver device (alpha2), the piezoelectric elements (3, 4) generating predetermined ultrasonic vibration with application of a predetermined AC voltage, and based on the ultrasonic vibration, the device body (1) excites mechanical vibration in a predetermined direction on a vibration end surface (1a) of the device body (1). The male-type head section (21) is formed so that it can fit in a female-type engraved marking (103) in a screw (beta1) and is integrally fixed with the device body (1) on the vibration end surface (1a) of the device body (1). The male-type head section (21) applies rotational torque, directly applied to the screwdriver device (alpha2) by an external force, to the screw (beta1) in which the female-type engraved marking (103) is fitted and contact, and also the male-type head section (21) transmits to the screwdriver device (alpha2) mechanical vibration in a predetermined direction excited by the device body (1).
Owner:NIPPON TELEGRAPH & TELEPHONE CORP

Interlocking container

The present invention relates to an interlocking container that has a wing provided on the exterior wall of a container body containing contents and fixes the other container body interlocked above the container body by means of the wing. The interlocking container includes a container body that includes a projecting portion bent downward, which is provided at the circumference of an exterior wall, a first groove grooved at an upper end of the projecting portion in a predetermined depth, and a hill portion that is provided at an entrance of the first groove and projects from an upper end of the projecting portion; a wing that includes a pair of hinges projecting at one side of the exterior wall, a support body hinge-coupled with the hinge, and a fixation projecting piece projecting on one end of the support body to form a predetermined angle to the support body, which fits in the first groove through the fixation projecting piece; and a cover that includes the projecting portion provided at the circumference of the exterior wall and the hill portion provided on the top surface of the projecting portion, which covers the upper part of the container body. According to the present invention, fastening force between interlocked containers is improved, contents stored in the container are prevented from being leaked to the outside, and a lifespan is also increased.
Owner:HANA COBI PLASTIC

Anti-typhoon and anti-leakage metal roof system

The invention discloses an anti-typhoon and anti-leakage metal roof system. The metal roof system sequentially comprises a main steel structure, main roof purline, secondary roof purline, pressed steel bottom plates and purline laid on the pressed steel bottom plates from top to bottom. A plurality of fixed seats are fixed to the purline at intervals, concave roof plates which are engaged with thefixed seats are arranged between the fixed seats, and multiple layers of sound-insulation and vapor-proof thermal insulation materials are laid on the pressed steel bottom plates. The fixed seats include fixed supporting seats and panel engaging plates, wherein the purline is fixedly connected with the lower ends of the fixed supporting seats; the panel engaging plates are fixedly connected withthe fixed supporting seats, and small angles are formed between the panel engaging plates and the fixed supporting seats in the length direction of the roof plates so that the panel engaging plates and the fixed supporting seats can rotate relatively; and panel engaging parts are formed in the upper parts of the panel engaging plates, and the panel engaging parts and both side edges of the roof plates form engaging connection. The anti-typhoon and anti-leakage metal roof system solves the problems that a traditional metal roof system with vertical lockrands has low wind resistance, and is prone to leaking and prone to producing expansion deformation damage, and the safety of upper supporting facilities is affected.
Owner:CENT INT GROUP +1
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