Locks – Portable – Padlocks
Patent
1993-12-15
1995-12-26
Gall, Lloyd A.
Locks
Portable
Padlocks
70 54, 70417, E05B 6738
Patent
active
054777100
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a device for protecting a padlock.
BACKGROUND AND SUMMARY OF PRIOR ART
Padlocks are frequently used to prevent opening of various types of locks such as bolt locks, hasp locks and double angle locks. Generally speaking, the padlock is easily accessible to tampering. The padlock may be broken by using bolt cutters he shackle away from the body of the padlock. Various arrangements have been proposed to protect padlocks from this form of tampering. See for instance U.S. Pat. Nos. 4,033,156; 4,238,941; 3,828,591; 4,879,889; and 3,718,014; U.K. patent specification Nos. 2,206,376A and 2,185,519A; and Australian patent specification Nos. 26903/88; 23818/88; 60776/86; 57622/80; 66735/90 and 38235/89. Another weakness with locks which are secured by padlocks is the problem of sawing through the shackle, loop or hole through which the padlock shackle passes so as to open the lock. This problem is addressed by some of the known arrangements but they tend to be cumbersome or involve providing a substantially closed housing for the padlock. U.K. specification No. 2,185,519A discloses a comparatively simple device but it would have the practical disadvantage that the lock to which it is coupled would not be satisfactorily protected. Also it appears to be restricted to use with only hasp and staple types of locks.
SUMMARY OF THE INVENTION
The object of the invention is to provide a comparatively simple, robust and effective device which protects both the padlock and pans of the lock to which the padlock is coupled and which can be used with a number of different locks.
According to the present invention there is provided a device for protecting a padlock and lock, the padlock including a body and shackle, the lock including a first portion mounted on a surface, the first portion having a shackle, loop or hole which, in use, is coupled to the shackle of the padlock; said device including a shield portion having first, second and third legs disposed to form a generally C-shaped body, a mounting member mounted within said C-shaped body, said member including an opening or openings through which, in use, the padlock shackle passes to hold the device captive relative lock with the padlock and the shackle, loop or hole of the first portion of the lock being substantially covered by said C-shaped body characterised in that the first a,and third legs of said body extend, in use, towards said surface and include projections which, in use, lie adjacent to said surface.
When the device of the invention is used to protect a padlock on a bolt type, hasp type or double angle type of lock, the lock itself is frequently mounted on a solid surface such as a wall or door jamb or the like. The device of the invention together with the surface upon which the lock is mounted at least partially surrounds the padlock so as to make it very difficult to tamper with the hook of the padlock. In addition, the device also serves to protect the hole or loop of the lock upon which the padlock is mounted.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
The invention will now be further described with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of the device of the invention;
FIG. 2 is a rear view of the device;
FIG. 3 is a side view of the device;
FIG. 4 is a plan view of the device;
FIG. 5 is a perspective view showing the device mounted on a padlock;
FIG. 6 is a schematic view partly in section showing the device in situ;
FIG. 7 illustrates the use of the device on a bolt type lock;
FIG. 8 illustrates the use of the device with a hasp type lock;
FIG. 9 illustrates the use of the device with a double angle type lock; and
FIGS. 10 to 13 illustrate one technique for mounting the device on a hasp type lock.
DESCRIPTION OF A PREFERRED EMBODIMENT
The device 2 of the invention is shown in FIGS. 1 to 4. It comprises a channel portion 4 and cross plate 6. The channel portion 4 is formed from sheet metal so as to have a front leg 8 and two side legs 10 and 12. The channe
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