초록 ▼

The present invention, and inventive system, describes a lock system that is designed to be attached to an existing cast iron loose grate and or manhole covers that sits in a cast iron or other material frame allowing the loose grate to be locked into the frame so it cannot be removed from the frame

The present invention, and inventive system, describes a lock system that is designed to be attached to an existing cast iron loose grate and or manhole covers that sits in a cast iron or other material frame allowing the loose grate to be locked into the frame so it cannot be removed from the frame accidently or on purpose without the proper tool to unlock the security locking bolt. In some embodiments of the present invention, the present invention does not need a frame and interacts with the wall holding the cover directly. In at least one embodiment the present invention operates by an upper and lower section. The lower section may have multiple bars that operate independently of each other. These lower sections can rotate about a screw which is located in a hole drilled through a grate or manhole, such that the lower sections can rotate across the manhole cover and extrude past the radius of the manhole cover.

대표청구항 ▼

1. A lock comprising: a hollowed three dimensional top base with a hole in a top region, multiple holes in the side region adjacent to the top region, and a threaded lower region;a lower three dimensional base with a large orifice;a upper nut;a lower nut;several small spheres of larger diameter than

1. A lock comprising: a hollowed three dimensional top base with a hole in a top region, multiple holes in the side region adjacent to the top region, and a threaded lower region;a lower three dimensional base with a large orifice;a upper nut;a lower nut;several small spheres of larger diameter than the multiple holes in the side region;at least one large sphere of larger diameter that the small spheres;a locking screw which can be inserted into the hole in the top region of said upper base; said locking screw mechanically engage with said large sphere such that when rotated said locking screw causes the large sphere to move relative to the locking screw and to force said small spheres to extrude from said base via said multiple holes;said threaded lower region is threaded with said upper nut;said threaded lower region is inserted in mechanical communication with said large orifice of said lower base with a region of said threaded lower region extruding through said lower base;said lower nut is threaded with said threaded lower region extruding through said lower base,an extended member with several orifices;attachment pins; said extended member is attached to said lower base by inserting said attaching pins through said orifices of said extended member and then through said smaller orifices of said lower base;wherein when rotated said extended member prevents additional rotation when in contact with a solid barrier. 2. The lock of claim 1 further comprising; said hole in top region is threaded; andsaid locking screw is threaded to mechanically engage with said hole in top region. 3. The lock of claim 2 further comprising; said top region has and engagement face. 4. The lock of claim 3 further comprising; a turnkey unit with male engagement member for engaging said engagement face. 5. The lock of claim 1 further comprising; said upper base is substantially cylindrical in shape. 6. The lock of claim 1 further comprising; said lower base is a cam. 7. A lock comprising: a hollowed three dimensional top base with a hole in a top region, multiple holes in the side region adjacent to the top region, and a threaded lower region;a lower three dimensional base with a large orifice;an upper nut;a lower nut;several small spheres of larger diameter than the multiple holes in the side region;at least one large sphere of larger diameter that the small spheres;a locking screw which can be inserted into the hole in the top region of said upper base; said locking screw mechanically engage with said large sphere such that when rotated said locking screw causes the large sphere to move relative to the locking screw and to force said small spheres to extrude from said base via said multiple holes;said threaded lower region is threaded with said upper nut;said threaded lower region is inserted in mechanical communication with said large orifice of said lower base with a region of said threaded lower region extruding through said lower base;said lower nut is threaded with said threaded lower region extruding through said lower base;a key with a male interface in a unique geometric configuration; said locking screw further comprisesa cover for said locking screw; said cover further comprising:a female interface with a unique geometric configuration designed to interface with said key. 8. The method for use of a lock comprising; providing a lock system comprising; a hollowed three dimensional top base with a hole in a top region, multiple holes in the side region adjacent to the top region, and a threaded lower region; said top region has and engagement face,a turnkey unit with male engagement member for engaging said engagement face,a lower three dimensional base with a large orifice and two small orifices;a upper nut;a lower nut;an extended member with several orifices;attachment pins;several small spheres of larger diameter than the multiple holes in the side region;at least one large sphere of larger diameter that the small spheres;a locking screw which can be inserted into the hole in the top region of said base; said locking screw mechanically engage with said large sphere that when rotated said locking screw causes the large sphere to move relative to the locking screw and to force said small spheres to extrude from said base via said multiple holes;said threaded lower region is threaded with said upper nut;said threaded lower region is inserted in mechanical communication with said large orifice of said lower base with a region of said threaded lower region extruding through said lower base;said lower nut is threaded with said threaded lower region extruding through said lower base;mechanically attaching said turnkey unit with male engagement member for engaging said engagement face to said engagement face thereinrotating said turnkey unit with male engagement member for engaging said engagement face; wherein said rotation of the turnkey unit with male engagement member for engaging said engagement face upper base will cause the engagement face to stop when it contacts said upper nut and the lower nut to insert itself partially into the semicuboidal indention causing the lower base to rotate, and rotate up the lower threaded region;wherein when fully rotated said lower base prevents additional rotation when in contact with a solid barrier. 9. The method for use of a lock of claim 8 further comprising; engaging said lower base with a frame wall by said rotation up the lower threaded region. 10. The method for use of a lock of claim 9 further comprising; disengaging said lower base with a frame wall by said counter rotation down the lower threaded region. 11. The method for use of a lock of claim 8 further comprising; a locking screw which can be inserted into the hole in the top region of said base;rotating said locking screw mechanically so as to engage with said large sphere such that when rotated said locking screw causes the large sphere to move relative to the locking screw and to force said small spheres to extrude from said base via said multiple holes and engage the inner tubular wall. 12. The method for use of a lock of claim 11 further comprising; counter-rotating said locking screw so that small spheres retract into said base.