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| Patents for B66B 17 - Hoistway equipment (1,517) |
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| 10/22/1986 | CN86101716A Lifting gear | | 10/01/1986 | CN85102488A Hoist-skip turning device for shaft well | | 06/03/1986 | CA1205416A1 Log bundle side lift | | 01/14/1986 | US4564330 Skip filling apparatus and method | | 01/02/1985 | EP0129678A1 Automatic device for lifts or goods-lifts without safety lift-shafts | | 02/14/1984 | CA1162160A1 Skips and flasks | | 06/15/1983 | EP0081212A1 Safety device for an elevator or hoist | | 10/26/1982 | CA1134289A1 Automatic drawbridge for elevator | | 06/08/1982 | US4333549 Car blocking apparatus | | 11/24/1981 | US4302145 Automatic drawbridge for elevator | | 12/02/1980 | US4236605 Variable counterweight system | | 04/22/1980 | CA1076070A1 Self-loading and self-propelled haulage vehicle | | 02/06/1979 | CA1047973A2 Method of loading a haulage vehicle | | 12/19/1978 | CA1044617A1 Decompression of pressure chambers, particularly the decompression of actuating pressure chambers of mine cage holding means | | 02/28/1978 | US4075839 Decompression of pressure chambers, particularly the decompression of actuating pressure chambers of mine cage holding means | | 12/20/1977 | US4063619 Elevator platform structure | | 04/05/1977 | US4015689 Elevator system safety brace device |
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