A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A lock for a tamper-resistant assembly
The invention relates to a tamper-resistant lock assembly comprising a plate 16 having a slot 20 for receiving a key 10. The slot 20 extends through the plate 16 from an opening (20a figure 3) in a front face to an exit 20b in an opposing rear face. The opening (20a figure 3) has a first profile and the exit 20 has a second, different profile. The key 1 comprises a shaft 12 having a bit 14 extending therefrom. The bit 14 is formed from a shape memory material and is pre-configured such that its cross-sectional shape in its temporary form matches the first profile, so the bit 14 can be inserted through the slot 20 via the opening (20a figure 3). On application of a predetermined external stimulus, the key bit 14 returns to a permanent form in which its cross-sectional shape matches the second profile and the bit 14 can be retracted from said slot 20 via said exit 20b.
A lock for a tamper-resistant assembly
The invention relates to a tamper-resistant lock assembly comprising a plate 16 having a slot 20 for receiving a key 10. The slot 20 extends through the plate 16 from an opening (20a figure 3) in a front face to an exit 20b in an opposing rear face. The opening (20a figure 3) has a first profile and the exit 20 has a second, different profile. The key 1 comprises a shaft 12 having a bit 14 extending therefrom. The bit 14 is formed from a shape memory material and is pre-configured such that its cross-sectional shape in its temporary form matches the first profile, so the bit 14 can be inserted through the slot 20 via the opening (20a figure 3). On application of a predetermined external stimulus, the key bit 14 returns to a permanent form in which its cross-sectional shape matches the second profile and the bit 14 can be retracted from said slot 20 via said exit 20b.
A lock for a tamper-resistant assembly
SAMUAL DAVID CHARLES PARFITT (author) / THOMAS MARK PLUCINSKI (author) / RICHARD JOHN HARPER (author)
2018-01-24
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser