Abstract: A zero insertion/extraction force socket adapted to be mounted on a printed circuit board. The socket includes an insulative housing having multiple insertion holes for conductive contacts to insert thereinto, multiple insertion pins of an integrated circuit being inserted into the insertion holes to contact with the conductive contacts, and two fulcrum dents disposed on or near two edges of the housing for a pushing piece to insert thereinto. Each fulcrum dent serves as a leverage fulcrum, enabling the pushing piece to directly push/lever an edge of the integrated circuit and shift the integrated circuit on an insertion face of the housing with the insertion pins of the integrated circuit moving from a loosening position where the insertion pins loosen from the conductive contacts to a contacting position where the insertion pins contact with the conductive contacts or moving from the contacting position to the loosening position.

Abstract: A bendable joint for a collapsible playpen includes two disc housings, two discs, a main body and a push cap and two screws. The discs has two sector-shaped projections, and a projeting pin provided on a side wall of one of the sector-shaped projections to engage a pin hole provided in a side wall of one of two opposite projections of the main body to keep the disc housings, the discs and the main body and the push cap in a spread position securely, without potential dangers of the playpen suddenly collapsed by the joint bent by careless press of the push cap.

Abstract: A raised floor supporting structure including a plurality of upright supports, a plurality of top stretchers and bottom stretchers respectively connected between the upright supports at different elevations, wherein each upright support is comprised of a circular base having an upright socket and radial reinforcing ribs extended from the upright socket, a reinforced upright tube mounted in the upright socket of the circular base and covered with a top cap, a screw member inserted through the center hole of the top cap into the upright tube, a nut threaded onto the screw member and supported on the top cap and turned to adjust the elevation of the screw member, a bracket mounted on the screw member at the top for holding floor panels; each top stretcher has a coupling portion at each end respectively coupled to a respective coupling portion of the bracket of one upright support, and a pin hole at each end respectively coupled to a respective upright pin of the bracket of the corresponding upright support; each

Abstract: An improved method of reaction of water PU resins for improving the blocking reactions of beta-dicarbynal compounds and polisocynantes, and reducing the reaction time for water PU blocking, wherein the construction is: ##STR1## wherein: R.sub.1,R.sub.2,R.sub.3,R.sub.4 =hydrogen or alkyl groupn.sub.1 =1.about.100n.sub.2, n.sub.3, n.sub.4 =1.about.10The blocking agents of beta-Dicarbonyl compounds are reduced by D.sub.1 and D.sub.2 which are used in the blocking reactions of water PU.

Abstract: A collapsible bicycle frame includes a main frame having a front frame and a rear frame. A rear end of the front frame and a front end of the rear frame are pivotally connected. The rear end of the front frame includes a first engaging mechanism while the front end of the rear frame includes a second engaging mechanism for securely engaging with the first engaging mechanism when the front frame and the rear frame are in an extended status, and the first engaging mechanism and the second engaging mechanism disengages from each other when collapsing the bicycle.

Abstract: A coffee maker including a brewing and warming unit and a carafe, wherein the carafe has a hot plate at the bottom, and a downward annular flange raised from the bottom around the hot plate for supporting the carafe on a table top; the brewing and warming unit includes a base having a heat insulating rack and a concave heat insulating plate mounted within the heat insulating rack to hold a heating plate for heating the carafe, a lever controlled micro switch which is switched on when the carafe is placed on the heating plate or switched off when the carafe is removed from the heating plate, a first sensor which detects the temperature of the carafe, a second sensor which detects the temperature of the heating plate, and a control circuit driven by the micro switch to control the power of the heating plate subject to the detection result of the first sensor and the second sensor.

Abstract: A liquid adjusting type magnetic brassiere including an oval sac in each cup of the brassiere, the sac having a curved chamber at a lower half portion for containing a liquid, and a plurality of air vents at an upper half portion. The liquid in the chambers provides a natural and elastic support for the breasts. A plurality of small magnets are radially arranged on the surface of the sac to generate lines of magnetic force which may promote blood circulation and metabolism in the breasts.

Abstract: A temperature control system (10) is provided for controlling temperature parameters in a gas chromatography column assembly (18). The temperature control system (10) includes an extended length capillary gas chromatography column member (12) which contains chemical samples to be analyzed. A heating wire (14) to heat the capillary gas chromatography column member (18) is mounted adjacent to column member (12) and extends throughout a length of the column member (12) extension. A dielectric temperature sensing mechanism for measuring the temperature of the capillary gas chromatography column member (12) is mounted adjacent the column member (12) and provides for minimizing any possibility of electrical shorting within temperature control system (10).

Abstract: A folding collapsible mantel including a folding table plate formed of two table tops hinged together and equipped with two pairs of folding stands, the table plate having a center opening and mounting grooves at two opposite sides of its center opening, a base open mounting frame detachably suspended from the center opening of the table plate, a peripherally perforated suspension open mounting frame detachably suspended from the base open mounting frame, and a peripherally perforated case detachably suspended from the suspension open mounting frame for carrying a fuel for burning.