| 摘要 |
1309233 Screw sockets F T PRODUCTS Ltd 20 May 1970- [8 May 1969] 23469/69 Addition to 1066829 Heading F2H A resilient fastener 10, e.g. 'of polypropylene, for holding a threaded screw 23 in a rectangular aperture 26 of a panel 25 comprises a tubular shank 11 of rectangular external cross-section tapering towards the leading end 20, two external flanges 12, 13 on opposite sides of the trailing end 14 of the shank, external grooves adjacent the flanges to form shoulders 21, 22, a stepped axial bore 17 having a cylindrical portion 19 adjacent the leading end 20 adapted to grip the screw 23, and two facing wall portions 15, 16 extending between the flanged sides of the shank and bowed inwardly to facilitate insertion of the shoulders 21, 22 through the aperture 26. Portion 18 of the bore 17 is approximately square, apart from the bowing of walls 15, 16. |
