Heavy security lock system
CA 1237911 A · Owner: Eberly, David S. · Inventors: Eberly, David S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This security device is designed for padlocks so as, to prevent their shackle members from being cut by a bolt cutter or a hacksaw. Primarily, it consists of a main body which nestles the padlock, and which leaves no room for the operation of a bolt cutter or hacksaw to remove it from the assembly. The assembly further includes a strap for engaging with whatever is to be locked, and it includes a clevis pin for retaining the assembly together, in combination with the lock.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.