| 摘要 |
1,170,320. Door closer. VEREINIGTE BAUBESCHLAGFABRIKEN GRETSCH & CO. G.m.b.H. 20 Oct., 1967 [12 Nov., 1966 (2)], No. 47749/67. Heading E2M. A door closer has a piston 29, movable in a clamping cylinder 7, by means of a tubular piston rod 27, which piston is subject to the influence of a closer spring 25 and is provided with an overflow valve 36, and having a control pin 48 penetrating through the piston and guided in the piston rod, with a throttle cross section which varies over its length, characterised in that the control pin is subject to the influence of a spring 45, which bears on an externally accessible regulating pin 42 and a stop screw 52 is provided upon which the control pin bears during a part of the piston travel. |
