34.
    发明专利
    未知

    公开(公告)号:DE397292C

    公开(公告)日:1924-07-03

    申请号:DEA0035673

    申请日:1921-06-11

    Fastener for wood and similar materials - consists of metal workpiece with row of serrations and aligned in orificed workpiece

    公开(公告)号:CH559318A5

    公开(公告)日:1975-02-28

    申请号:CH46073

    申请日:1973-01-12

    Abstract: A fastener consisting of at least one piece of metal (9) having a row of serrations or spikes. This is positioned in an orifice into a hole (7) made into the two workpieces (5, 6) made of wood etc. and then forced outward so that the spikes are entered into the wall of the hole joining the two pieces together. Two fasteners are preferred diametrically opposite with a plug (14) which can be inserted between them to maintain them in position. Preferably the fastener is aligned in the orifice by means of a magnetic feeder and subsequently by means of a compression bolt the serrations are forced into the surface layers of the wood within the orifice.

    38.
    发明专利
    未知

    公开(公告)号:DE1156280B

    公开(公告)日:1963-10-24

    申请号:DEM0043638

    申请日:1959-12-09

    Abstract: 919,726. Spiked-plates. MULLER, M. E. A. July 28, 1960 [July 29, 1959], No. 26353/60. Class 89 (2). A spiked-plate 1 for interconnecting parts 11, 12 comprises a substantially U-shaped body, the limbs 2, 3 of which are formed with teeth 4, 5. Teeth 5 lie in the planes of the limbs and teeth 4 lie in planes extending inwardly from the limbs towards the central axis of the plate. In a modification, the planes of teeth 4 are parallel to the central axis. When driven, the teeth bend into the thickness of the parts, and the back of the plate may be flattened by hammering to form a stiffening groove 10.

Patent Agency Ranking