Manually actuated mechanical device easily raises or lowers two-section overhead garage door. Rolamite principle is used to provide controlled but varying rate of ascent or descent. Device is applicable where vertical shielding or baffling needs to be raised or lowered.
Easy manual operation of overhead garage doors - A concept
1970-11-01
Sonstige
Keine Angabe
Englisch
Vehicle parking assistance for avoiding contact with garage doors
Europäisches Patentamt | 2020
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