A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
STREET MANHOLE COVER WITH KEY/LOCK ASSEMBLY
A key/lock assembly (1) for a street manhole cover (2), which comprises a lid (3) and a peripheral frame (4) fixed to the ground and arranged so as to peripherally surround the lid (3). The key/lock assembly comprises a latch (6) mounted on a lower surface (3a) of the lid (3) and designed to assume an advanced closing position, in which is cooperates in abutment with an abutment portion of the frame (4), and a retracted opening position, in which it is released from the abutment portion; a key (12) designed to move the latch (6); and return means (8), which are designed to automatically force the latch (6) to its closing position. In the latch (6) there is obtained a moving recess (10), which is designed to be engaged by a key (12) in order to overcome the action of the return means (8) and move the latch (6) to its opening position. Furthermore, the key/lock assembly comprises a locking wall (11), which extends from the lower surface (3a) of the lid (3) in the area of the moving recess (10) and is designed to be crossed by an oblong end portion (14) of the key (12) when it is arranged in its inactive position. In the locking wall (11) there is obtained a locking groove (11a) , which is designed to be engaged by the oblong end portion (14) when it is in its active position.
STREET MANHOLE COVER WITH KEY/LOCK ASSEMBLY
A key/lock assembly (1) for a street manhole cover (2), which comprises a lid (3) and a peripheral frame (4) fixed to the ground and arranged so as to peripherally surround the lid (3). The key/lock assembly comprises a latch (6) mounted on a lower surface (3a) of the lid (3) and designed to assume an advanced closing position, in which is cooperates in abutment with an abutment portion of the frame (4), and a retracted opening position, in which it is released from the abutment portion; a key (12) designed to move the latch (6); and return means (8), which are designed to automatically force the latch (6) to its closing position. In the latch (6) there is obtained a moving recess (10), which is designed to be engaged by a key (12) in order to overcome the action of the return means (8) and move the latch (6) to its opening position. Furthermore, the key/lock assembly comprises a locking wall (11), which extends from the lower surface (3a) of the lid (3) in the area of the moving recess (10) and is designed to be crossed by an oblong end portion (14) of the key (12) when it is arranged in its inactive position. In the locking wall (11) there is obtained a locking groove (11a) , which is designed to be engaged by the oblong end portion (14) when it is in its active position.
STREET MANHOLE COVER WITH KEY/LOCK ASSEMBLY
STRASSENSCHACHTDECKEL MIT SCHLÜSSEL-/SCHLOSSANORDNUNG
COUVERCLE DE TROU D'HOMME URBAIN AVEC ENSEMBLE CLÉ/SERRURE
BELLI ROBERTO (author)
2023-08-16
Patent
Electronic Resource
English
IPC:
E02D
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