Patent classifications
E
FIXED CONSTRUCTIONS
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E05
LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
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E05Y
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
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2201/00
Constructional elements; Accessories therefor
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E05Y2201/40
Motors; Magnets; Springs; Weights; Accessories therefor
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E05Y2201/448

EMERGENCY OPENING DEVICE FOR A CLOSURE
20250092733 · 2025-03-20 ·

Methods of emergency opening of manholes in emergency situations, devices and systems for their embodiment and methods of assembling devices for emergency opening of movable elements installed in manholes.