US 4,680,860 AGranted

Apparatus for disassembling locks

AssigneeA-1 Security Manufacturing Corp.

InventorJohn C. Detloff

Life of this patent

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Abstract

An apparatus for use by locksmiths in disassembling the core of an interchangeable core cylinder lock. The apparatus holds the core securely and precisely, enabling a punch to extrude the springs, driver pins and spacer rods of the pin chambers into retaining chambers. The extruded contents of the pin chambers can then be examined and accurately returned to their respective pin chambers.

Claims7

Dependent claims

Apparatus for holding a removable core, and receiving pin chamber components extruded therefrom, said apparatus comprising:

(a) a lower member having a flat bottom surface, opposed parallel flat side surfaces rising perpendicularly from said bottom surface, a flat upper surface in parallel disposition to said bottom surface, forward and rear extremities, each extending between said side surfaces, a first series of parallel troughs of uniform semi-circular cross sectional configuration recessed within said upper surface and perpendicularly oriented to said forward and rear extremities, a first elongated recess of cylindric contour extending between said side surfaces adjacent said forward extremity and communicating with said first series of troughs, first pivot means disposed adjacent said rear extremity above said upper surface in perpendicular relationship to said side surfaces, and latch holding means associated with said side surfaces adjacent said forward extremity, and
(b) an upper member having a flat bottom surface adapted to lie in abutting contact with the upper surface of said lower member, opposed parallel flat side surfaces perpendicularly disposed to said bottom surface and disposed in coplanar relationship with the side surfaces of said lower member, forward and rear extremities adapted to lie directly above the corresponding extremities of the lower member, a second series of troughs shaped and spaced in a manner to meet with the first series of troughs to form circular cylindrical retaining chambers, a second elongated recess configured to meet with said first recess to form a core-receiving channel of cylindric contour whose cross-section comprises a least 180 degrees of circular arc, said arc being symmetrically disposed about said retaining chambers, said channel having an elongated slot which opens upon the forward extremities of said upper and lower members, locking means adjacent the forward extremity in communication with said second elongated recess, latch means interactive with the latch holding means of the lower member, and second pivot means interactive with said first pivot means to enable the upper member to swing in a vertical path and slide in a horizontal plane with respect to said lower member.

Dependencies are inferred from the claim text.

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Abstract

Apparatus for holding a removable core, and receiving pin chamber components extruded therefrom, said apparatus comprising:

(a) a lower member having a flat bottom surface, opposed parallel flat side surfaces rising perpendicularly from said bottom surface, a flat upper surface in parallel disposition to said bottom surface, forward and rear extremities, each extending between said side surfaces, a first series of parallel troughs of uniform semi-circular cross sectional configuration recessed within said upper surface and perpendicularly oriented to said forward and rear extremities, a first elongated recess of cylindric contour extending between said side surfaces adjacent said forward extremity and communicating with said first series of troughs, first pivot means disposed adjacent said rear extremity above said upper surface in perpendicular relationship to said side surfaces, and latch holding means associated with said side surfaces adjacent said forward extremity, and
(b) an upper member having a flat bottom surface adapted to lie in abutting contact with the upper surface of said lower member, opposed parallel flat side surfaces perpendicularly disposed to said bottom surface and disposed in coplanar relationship with the side surfaces of said lower member, forward and rear extremities adapted to lie directly above the corresponding extremities of the lower member, a second series of troughs shaped and spaced in a manner to meet with the first series of troughs to form circular cylindrical retaining chambers, a second elongated recess configured to meet with said first recess to form a core-receiving channel of cylindric contour whose cross-section comprises a least 180 degrees of circular arc, said arc being symmetrically disposed about said retaining chambers, said channel having an elongated slot which opens upon the forward extremities of said upper and lower members, locking means adjacent the forward extremity in communication with said second elongated recess, latch means interactive with the latch holding means of the lower member, and second pivot means interactive with said first pivot means to enable the upper member to swing in a vertical path and slide in a horizontal plane with respect to said lower member.