1. A cast breaking method for crushing and breaking a useless cast raw material by placing the useless cast raw material inside from a placement opening formed above by a first cutter device provided with a first cutter that converges toward a tip end and a second cutter device facing the first cutter device and provided with a second cutter that faces the first cutter and converges toward a tip end as well as having a fulcrum shaft on a lower side by means of a pressing action to press the placed useless cast raw material through a movement of the second cutter device along a circular trajectory via mobile means having a fulcrum shaft on an upper side of the second cutter device and a breaking action between the first and second cutters, characterized in that:
a damper that receives the useless cast raw material placed inside from the placement opening andor a crushed and broken recycled cast product has a structure to be movable via a pneumatic cylinder capable of adjusting an air pressure to be regulated at a pre-set air pressure, so that it is configured in such a manner that the damper is allowed to move automatically via the pneumatic cylinder capable of adjusting the air pressure when an air pressure rises above the pre-set air pressure so as to open the discharge port for letting the crushed and broken recycled cast product be discharged from the opened discharge port; and
the damper is provided with welded ribs in such a manner that the welded ribs are formed in a corrugated shape or a projection shape or in a staggered fashion to form clearing gaps among the welded ribs with purposes of facilitating falling of the crushed and broken recycled cast product through the clearing gaps, enhancing strength of the damper and preventing damage and wearing thereof, and using the welded ribs of the damper as breaking cutters.
2-5. (canceled)
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A key assembly comprising:
a key blade, the key blade being substantially flat and having a first surface and a second surface, the key blade configured to be inserted into a mating lock;
an aperture in the key blade, the aperture having an axis;
a cap having an outer surface, captured in the aperture for continuous axial travel between a first limit extending out of the first surface and a second limit recessed within the aperture; and
a base having an outer surface, captured in the aperture for continuous axial travel between a first limit extending out of the second surface and a second limit recessed within the aperture; and
a magnet associated with the base, the cap or both, the magnet having sufficient magnetic strength to attract or repel a movable part of the key, or the lock from a locking position to an unlocking position in the lock, or in both the key and the lock.
2. A lock assembly comprising:
a barrel;
a column extending from the barrel, the column having at least two column apertures;
a cylinder configured to rotate within the barrel, the cylinder including a guide way sized and configured to receive a key blade, the cylinder including a cylinder aperture axially registered with the column aperture when the lock assembly is locked, and movable out of registration with the column aperture with the key blade to unlock the lock assembly;
a first and a second pin captured by one of the cylinder and the column, the pins having a first portion slidable in the cylinder aperture and a second portion slidable in the column aperture, the pins normally being biased to a locking position with the first portion within the cylinder aperture and the second portion within the column aperture to lock the cylinder relative to the barrel;
a magnetically influenced part associated with the first pin, the magnetically influenced part being movable responsive to a magnetic field provided in the guide way to move the first pin to an unlocking position; and
a mechanically influenced part associated with the second pin, the mechanically influenced part being movable responsive to a non-magnetic force provided in the guide way to move the second pin to an unlocking position.
3. The combination of a key assembly and a lock assembly:
the lock assembly having:
a barrel;
a column extending from the barrel, the column having a column aperture;
a cylinder configured to rotate within the barrel, the cylinder including a guide way sized and configured to receive a key blade, the cylinder including a cylinder aperture axially registered with the column aperture when the lock assembly is locked, and movable out of registration with the column aperture with the key blade to unlock the lock assembly;
a first and a second pin captured by one of the cylinder and the column, the pins having a first portion slidable in the cylinder aperture and a second portion slidable in the column aperture, the pins normally being biased to a locking position with the first portion within the cylinder aperture and the second portion within the column aperture to lock the cylinder relative to the barrel;
a magnetically influenced part associated with the first pin, the magnetically influenced part being movable responsive to a magnetic field provided in the guide way to move the first pin to an unlocking position; and
a mechanically influenced part associated with the second pin, the mechanically influenced part being movable responsive to a non-magnetic force provided in the guide way to move the second pin to an unlocking position; and
the key assembly comprising:
a key blade, the key blade being substantially flat and having a first surface and a second surface, the key blade configured to be inserted into a mating lock;
an aperture in the key blade, the aperture having an axis;
a cap having an outer surface, captured in the aperture for continuous axial travel between a first limit extending out of the first surface and a second limit recessed within the aperture; and
a base having an outer surface, captured in the aperture for continuous axial travel between a first limit extending out of the second surface and a second limit recessed within the aperture; and
a magnet associated with the base, the cap or both, the magnet having sufficient magnetic strength to attract or repel a movable part of the key, or the lock from a locking position to an unlocking position in the lock, or in both the key and the lock.
4. The invention of claim 2, wherein the magnetically influenced part is integral with the pin.
5. The invention of claim 2, wherein the magnetically influenced part is magnetized, and is positioned to repel a magnetic field provided in the keyway
6. The invention of claim 2, wherein the magnetically influenced part is attracted by a magnetic field provided in the keyway.
7. The invention of claim 2, in which the magnetically influenced part is slidable within the cylinder aperture adjacent to the keyway.
8. The invention of claim 2, in which the first pin is normally biased into its locking position by a resilient element.
9. The invention of claim 2, in which the second column aperture is generally coaxial with the first column aperture and diametrically opposed to the first column aperture.
10. The invention of claim 1, wherein the magnet is movable normal to the direction of insertion of the key blade in the guide way.
11. The invention of claim 10, in which the previously defined magnet is further defined as a first magnet, the invention further comprising a second magnet associated with the base or the cap, the second magnet being positioned to repel the first magnet normal to the direction of insertion of the key blade in the guide way.
12. The invention of claim 3, in which the previously defined magnet is further defined as a first magnet, the invention further comprising a second magnet associated with the base or the cap, wherein the first and second magnets being movable with respect to the other magnet, the second magnet being positioned to be repelled by or repel the first magnet normal to the direction of insertion of the key blade in the guide way.
13. The invention of claim 12, wherein the repelling magnets bear between the key blade and the pin to bias the pin into its unlocking position.