Abstract: A strip of heat activated structural adhesive film is sandwiched between two thin strips of tempered steel shim stock, and the combined strips are placed into a semi-cylindrical cavity defined by a female mold member or block. A mating male mold member or metal bar presses the strips into the cavity while the parts are heated within a heated platen hydraulic press to form a laminated curved shoe body. After the shoe body is cooled, a semi-cylindrical collar is attached by another strip of the adhesive to one end portion of the laminated shoe body and with similar mold members heated within the press. The attached collar seats within a mating recess formed within a semi-circular mounting member and is removably secured by screws to provide for conveniently replacing the shoe body.

Abstract: A calendar pad intended for use to solicit donations on behalf of a specific charitable institution comprises a separate, removable sheet for each month. Each sheet includes a first portion having flaps extending along its three outer edges, and a second portion extending from the inner edge of the first portion and having no flap on any of its outer edges. On the back of each sheet, there is preprinted the name and address of the charitable institution, and the flaps along the outer edges of the first portion of the sheet are provided with adhesive coatings along their back surfaces, so that they are not visible when the sheet is in use as a calendar. Each sheet may be converted into an envelope for forwarding a donation to the charitable institution by folding the gummed flaps forward to overlie the first portion of the sheet in enclosing relation with a check, moistening the three gummed flaps, and then pressing the folded second portion of the sheet against the moistened adhesive.

Abstract: A tennis racquet having a polar moment of inertia similar to conventional length racquets, but being longer than conventional racquets with the same or larger size strung surface. Having the same polar moment of inertia as a well playing conventional racquet gives it the same "feel" but with greater reach, and, if desired, a larger strung surface.

Abstract: A tennis racket frame is constructed primarily of an elongated tubular member having a wall thereof consisting of a plurality of concentric layers of high tensile strength fibers impregnated and bonded together by binder resin to produce a hollow cored tennis racket. The method includes forming a plurality of string holes in the head portion of the racket, during or prior to the molding operation. The holes are formed by separating the fibers around the location of the hole by passing pointed penetrating tools through the frame in the area which will form the head portion thereof, and either retaining the tool in position in the holes during molding, or replacing the tools with positioning pins or grommets prior to the molding operation. If the pins are utilized they may be removed after molding of the racket is complete, and if grommets are utilized they become integrally attached to the racket and provide additional support for the strings.

Abstract: A tennis racket frame is constructed primarily of an elongated hollow tube member having a wall thereof consisting essentially of a plurality of concentric layers of high tensile strength fibers impregnated and bonded together by binder resin, at least two of the layers being helical windings of opposite unidirectional hands, and the head portion of a racket frame having a groove molded therein to receive the loop portions of the strings in recessed relation to the surrounding surface areas of the frame. The frames are made by a method including the use of a special mandrel on which the layers of fiber are wound under controlled conditions providing extra material in the head portion which is formed into the wall of the grooved portion of the head without affecting the overall sectional dimensions of the frame.

Abstract: A tennis racket frame is constructed primarily of an elongated hollow tube member having a wall thereof consisting essentially of a plurality of concentric layers of high tensile strength fibers impregnated and bonded together by binder resin, at least two of the layers being helical windings of opposite unidirectional hands, and the head portion of a racket frame having a groove molded therein to receive the loop portions of the strings in recessed relation to the surrounding surface areas of the frame. The frames are made by a method including the use of a special mandrel on which the layers of fiber are wound under controlled conditions providing extra material in the head portion which is formed into the wall of the grooved portion of the head without affecting the overall sectional dimensions of the frame.

Abstract: A method of fabricating and mounting a fiberglass fan blade of predetermined configuration which includes the steps of producing a metal hub having a dovetail slot in one end thereof and also having a bore extending from the other end thereof into said slot, assembling a plurality of layers of resin-impregnated fiberglass sheet in superposed relation forming a blade blank of predetermined dimensions, each of said layers including a blade portion and a root portion of a width at least equal to the diameter of said hub, interleaving additional pieces of the fiberglass sheet with the root portions of said layers to increase the thickness of the resulting root portion of the blank to approximately the configuration of the hub slot, inserting the root portion of the blank into the slot, placing the assembled blank and hub in a mold which includes cavities for the blank and the hub and a shoulder at the inner end of said hub cavity, heating the mold until the resin substantially liquifies while maintaining the one