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US 5,715,717 AGranted
Cylinder lock and key combination including a profiled key
OwnerBo Wideninventor
Life of this patent
Estimating the term…
Abstract
A cylinder lock and key combination, where the key (20) has an undercut profile groove (24) at one side surface (22) thereof and, in the key slot (13), the lock key plug has a corresponding profile tongue (15) with a downwardly projecting end portion (15a), which fills up the undercut portion (29) of the key profile groove (24) upon insertion of the key into the lock.
Claims25
A cylinder lock and key combination, said cylinder lock comprising:
- a shell (11);
- a cylinder key plug (12) rotatably mounted in said shell and having tumblers (14) disposed therein;
- and
- a key slot (13) extending longitudinally in said cylinder key plug for receiving an associated key which cooperates with said tumblers (14) in said cylinder key plug;
- said key comprising:
- an elongated, substantially flat key blade (20) extending between two side surfaces and between longitudinal upper and lower edges, said lower edge extending continuously along substantially an entire length of said key blade;
- and at least one rectilinear profile groove (24) extending along said entire length of said key blade in one of said side surfaces (22) thereof and being defined by two opposite groove surfaces (25, 27) and a groove bottom surface (26);
- wherein
- said key slot of said cylinder lock corresponds to the substantially flat shape of said key blade and is partially defined by a fixed and rectilinear profile tongue (15) disposed in said cylinder key plug and fixed thereto and projecting into said profile groove (24) of the key blade;
- and further wherein
- said profile groove (24) of said key is undercut at at least a groove surface (27) located closest to said substantially continuous lower edge of said key blade and said undercut groove surface (27) extends in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside a ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20), and said fixed and rectilinear profile tongue (15) of said cylinder lock has a downwardly projecting end portion, which fills up said undercut portion (29) of said profile groove (24) of said key upon insertion of said key blade.
8 more elements
A cylinder lock and key combination, said cylinder lock comprising:
- a shell (11);
- a cylinder key plug (12) rotatably mounted in said shell and having tumblers (14) disposed therein;
- and
- a key slot (13) extending longitudinally in said cylinder key plug for receiving an associated key which cooperates with said tumblers (14) in said cylinder key plug;
- said key comprising:
- an elongated, substantially flat key blade (20) extending between two side surfaces and between longitudinal upper and lower edges;
- and
- at least one rectilinear profile groove (24) extending along an entire length of said key blade in one of said side surfaces (22) thereof and being defined by two opposite groove surfaces (25, 27) and a groove bottom surface (26) which is substantially parallel to said side surfaces of the key blade;
- wherein
- said key slot of said cylinder lock corresponds to the substantially flat shape of said key blade and is partially defined by a fixed, rectilinear and substantially continuous profile tongue (15) disposed in said cylinder key plug and fixed thereto and projecting into said profile groove (24) of the key blade;
- and further wherein
- said profile groove (24) of said key is undercut at at least one groove surface (27), and said undercut groove surface (27) extends in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside a ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20), said fixed, rectilinear and substantially continuous profile tongue (15) of said cylinder lock has a projecting end portion, which fills up said undercut profile groove (24) of said key upon insertion of said key blade.
9 more elements
A cylinder lock and key combination, said cylinder lock comprising:
- a shell;
- a cylinder key plug rotatably mounted in said shell and having tumblers disposed therein;
- and
- a key slot extending longitudinally in said cylinder key plug for receiving an associated key which cooperates with tumblers in said cylinder key plug;
- at least one side tumbler being movable in a cavity disposed to one side of said key slot and having a side tumbler projection which extends into said key slot and cooperates with said key;
- said key comprising:
- an elongated, substantially flat key blade extending between two side surfaces and between longitudinal upper and lower edges;
- and
- at least one rectilinear profile groove extending along an entire length of said key blade in one of said side surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface, at least one groove surface being undercut so as to form a ridge portion extending rectilinearly along said profile groove, an outside of said ridge portion forming a part of said one side surface of said key blade, said undercut groove surface extending in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface, at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion located inside said ridge portion extending rectilinearly along said undercut profile groove;
- wherein
- said key slot of said cylinder lock corresponds to the substantially flat shape of said key blade and is partially defined by a fixed and rectilinear profile tongue disposed in said cylinder key plug and fixed thereto and projecting into said undercut profile groove upon insertion of the key blade;
- and wherein
- said key blade has a plurality of coded side bittings in said outside of said ridge portion for cooperation with said side tumbler projection of said cylinder lock, said coded side bittings forming a wave-like guide surface extending longitudinally in said ridge portion adjacent to said undercut profile groove of said key.
10 more elements
A key comprising:
- an elongated, substantially flat key blade extending between two side surfaces and between longitudinal upper and lower edges, said lower edge extending continuously along substantially an entire length of said key blade, said lower edge adapted to be adjacent to an outer surface of a cylinder key plug of an associated lock when said key is inserted, said key blade having a rectilinear profile groove (24) which extends along said entire length of said key blade in at least one of said side surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface (26),
- wherein
- said profile groove (24) is undercut at at least a groove surface (27) located closest to said substantially continuous lower edge of said key blade so as to form a ridge portion (28) extending rectilinearly along the profile groove, and said undercut groove surface (27) extends in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside said ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20).
A key comprising:
- an elongated, substantially flat key blade extending between two side surfaces and between longitudinal upper and lower edges, said key blade having a rectilinear profile groove (24) which extends continuously along an entire length of said key blade in at least one of said surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface (26) which is substantially parallel to said side surfaces of the key blade,
- wherein
- said groove (24) is undercut at at least one groove surface (27), and said undercut groove surface (27) extends in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove (29) located inside a ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20).
A key comprising:
- an elongated, substantially flat key blade extending between two side surfaces and between longitudinal upper and lower edges, said key blade having a rectilinear profile groove (24) extending along an entire length of said key blade in one of said side surfaces thereof and being defined by two opposite groove surfaces (25, 27) and a groove bottom surface (26),
- wherein
- at least one of said groove surfaces (27) is undercut so as to form a ridge portion (28) extending rectilinearly along the profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20), said undercut groove surface (27) extending in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside said ridge portion (28) extending rectilinearly along said undercut profile groove,
- and wherein said key blade has a plurality of coded side bittings in said outside of said ridge portion for cooperation with at least one side tumbler projection (105a) of an associated lock (100), said coded side bittings forming a wave-like guide surface extending longitudinally in said ridge portion adjacent to said undercut profile groove.
1 more element
A key comprising:
- an elongated, substantially flat key blade extending between two side surfaces and between longitudinal upper and lower edges, said key blade having a rectilinear profile groove which extends along an entire length of said key blade in one of said side surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface,
- wherein
- said profile groove is undercut at at least one groove surface so as to form a ridge portion extending rectilinearly along the profile groove, an outside of said ridge portion forming a part of said one side surface of said key blade, said key blade further having a plurality of coded side bittings, which form two guide surfaces (270"a, 270"b) extending on each side of said undercut profile groove (251") and being mutually substantially parallel, wherein a distance therebetween corresponds essentially to a height of a side tumbler projection (105"a) of an associated lock.
A key blank (50) for making a key, said key blank comprising:
- an elongated, substantially flat key blade extending between two mutually parallel side surfaces and between longitudinal upper and lower edges, said lower edge extending continuously along substantially an entire length of said key blade, said lower edge adapted to be adjacent to an outer surface of a cylinder key plug of an associated lock when said key blank is inserted, said key blade having a rectilinear profile groove extending along said entire length of said key blade in one side surface (22) thereof and being defined by two opposite groove surfaces (25, 27) and a groove bottom surface (26),
- wherein
- said profile groove (24) is undercut at at least a groove surface located closest to said substantially continuous lower edge of said key blade so as to form a ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade, said undercut groove surface (27) extending in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside said ridge portion (28) extending rectilinearly along said undercut profile groove.
A key blank for making a key, said key blank comprising:
- an elongated, substantially flat key blade extending between two mutually parallel side surfaces and between longitudinal upper and lower edges, said key blade having a rectilinear profile groove (24) which extends along an entire length of said key blade in one of said side surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface (26) which is substantially parallel to said side surfaces of the key blade,
- wherein
- said groove (24) is undercut at at least one groove surface (27), and said undercut groove surface (27) extends in a substantially flat surface which is inclined in such a way as to face inwardly towards the groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside a ridge portion (28) extending rectilinearly along said undercut profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20).
A key blank for making a key, said key blank comprising:
- an elongated, substantially flat key blade extending between two mutually parallel side surfaces and between longitudinal upper and lower edges, said key blade having a rectilinear profile groove (24) extending along an entire length of said key blade in one of said side surfaces thereof and being defined by two opposite groove surfaces and a groove bottom surface (26),
- wherein
- at least one of said groove surfaces (27) is undercut so as to form a ridge portion (28) extending rectilinearly along the profile groove, an outside of said ridge portion forming a part of said one side surface (22) of said key blade (20), said undercut groove surface (27) extending in a substantially flat surface which is inclined in such a way as to face inwardly towards said groove bottom surface (26), at an acute angle with respect to said groove bottom surface, and to form an undercut groove portion (29) located inside said ridge portion (28) extending rectilinearly along said undercut profile groove,
- and wherein
- said key blade has a plurality of coded side bittings in said outside of said ridge portion for cooperation with a side tumbler projection (105a) of an associated lock (100), said coded side bittings forming a wave-like guide surface extending longitudinally in said ridge portion adjacent to said undercut profile groove.
2 more elements
Dependencies are inferred from the claim text.