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    MELANGE FRIGORIFIQUE.
    14.
    发明专利
    MELANGE FRIGORIFIQUE. 未知

    公开(公告)号：BE900951A

    公开(公告)日：1985-02-15

    申请号：BE6048025

    申请日：1984-10-30

    Applicant: ERMAK BORIS ,  STEVENS ROBERT D

    Inventor： BORIS ERMAK

    IPC: C09K5/00 ,  C09K5/04 ,  C09K5/08 ,  F25B1/00 ,  C09K ,  F25B ,  C07C

    Abstract: L'invention est relative à des mélanges d'agents frigorifiques. Selon l'invention, un tel mélange se compose de tout au plus 60 % de chlorodifluoroéthane (R142b), d'environ 15 % de dichlorodifluorométhane (R12) et d'environ 25 % de chlorodifluorométhane (R22), calculés respectivement en % en poids. Un tel mélange permet d'utiliser des températures de fonctionnement plus élevées qu'avec tout autre agent réfrigérant quelconque et présente une pression de condensation trés favorable.

    RACKET FOR TENNIS AND SIMILAR GAMES
    15.
    发明专利
    RACKET FOR TENNIS AND SIMILAR GAMES 未知

    公开(公告)号：CA977788A

    公开(公告)日：1975-11-11

    申请号：CA170630

    申请日：1973-05-08

    Applicant: STEVENS ROBERT

    Inventor： STEVENS ROBERT

    IPC: A63B51/12

    Abstract: An improved racket is provided, for tennis and similar games, which incorporates a means for adjusting the string tension so that a proper tension may be maintained at all times when the racket is in use, and so that the tension of the strings of the racket may be relieved when the racket is not in use. The racket includes a resilient frame with an elongated handle attached to one end. The frame has a looped head portion with holes extending around its periphery to accommodate the strings. One string is mounted on the frame in a series of lateral passes extending across the area circumscribed by the head portion of the frame, a second string is mounted on the frame in a series of passes which extend vertically across the circumscribed area. Two plastic-encased metal arms are mounted to extend partially around both lower sides of the head portion of the frame. Appropriate grooves are formed in the plastic casing of the arms, and the lower ends of the vertical passes are looped around these arms. The ends of the arms are attached to an adjusting means which serves to pull the vertical passes into tension, thereby producing a compressive load on the frame of the racket. The frame then extends its lateral dimension to redistribute the load and produce equalizing tension on the lateral passes.

    16.
    发明专利
    未知

    公开(公告)号：DE2323297A1

    公开(公告)日：1973-11-29

    申请号：DE2323297

    申请日：1973-05-09

    Applicant: STEVENS ROBERT

    Inventor： STEVENS ROBERT

    IPC: A63B51/12

    Abstract: An improved racket is provided, for tennis and similar games, which incorporates a means for adjusting the string tension so that a proper tension may be maintained at all times when the racket is in use, and so that the tension of the strings of the racket may be relieved when the racket is not in use. The racket includes a resilient frame with an elongated handle attached to one end. The frame has a looped head portion with holes extending around its periphery to accommodate the strings. One string is mounted on the frame in a series of lateral passes extending across the area circumscribed by the head portion of the frame, a second string is mounted on the frame in a series of passes which extend vertically across the circumscribed area. Two plastic-encased metal arms are mounted to extend partially around both lower sides of the head portion of the frame. Appropriate grooves are formed in the plastic casing of the arms, and the lower ends of the vertical passes are looped around these arms. The ends of the arms are attached to an adjusting means which serves to pull the vertical passes into tension, thereby producing a compressive load on the frame of the racket. The frame then extends its lateral dimension to redistribute the load and produce equalizing tension on the lateral passes.

    MUSICAL INSTRUMENT STAND
    19.
    发明专利
    MUSICAL INSTRUMENT STAND 未知

    公开(公告)号：CA2487001A1

    公开(公告)日：2003-12-11

    申请号：CA2487001

    申请日：2003-05-30

    Applicant: STEVENS ROBERT

    Inventor： STEVENS ROBERT W

    IPC: F16M11/00 ,  G10G5/00 ,  G10D3/00

    Abstract: An easily disassembled, rugged stand for supporting musical instruments does not require moving parts, hinges, or screws. The stand is made of two simila r interlocking supports (10, 20), a cap (30) and a removable, flexible strap. The supports are adapted to be fastened together and contain the cap when th e stand is disassembled. Further, the flexible strap may be fastened to the supports and used as a handle (40). When the stand is assembled, the support s are further stabilized by the cap (30), and the flexible strap (40) may be attached to the cap (30) and used to hold, for example the neck of a guitar.

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