Security fastener
First Claim
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1. The combination of a rotary security fastener and a specific key, comprising:
- a fastener including a key receiving channel bounded by an outer wall defining a first profile, and by an inner wall defining a second profile, said key receiving channel defining at least one further profile; and
a key including a male member having a shape that permit its entry into said key receiving channel only when said male member and said fastener are in a relative angular position that allows said key to engage at least one of said profiles to rotate said fastener,said profiles being configured to prevent the male member of a non-matching key from providing sufficient torque to loosen the fastener.
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Abstract
A security fastener, for use with a corresponding key, having a channel in a head of the security fastener for receiving the key, the bottom of the channel being profiled wherein the depth of the channel varies along the length of the channel; a key for use with a security fastener; a combination, or a kit of parts, comprising a security fastener; a method of manufacturing a security fastener; and a method of processing an order for a security fastener.
77 Citations
42 Claims
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1. The combination of a rotary security fastener and a specific key, comprising:
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a fastener including a key receiving channel bounded by an outer wall defining a first profile, and by an inner wall defining a second profile, said key receiving channel defining at least one further profile; and a key including a male member having a shape that permit its entry into said key receiving channel only when said male member and said fastener are in a relative angular position that allows said key to engage at least one of said profiles to rotate said fastener, said profiles being configured to prevent the male member of a non-matching key from providing sufficient torque to loosen the fastener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method of manufacturing a rotary security fastener for use with a specific key, said fastener being formed with a key receiving channel bounded by an outer wall defining a first profile and by an inner wall defining a second profile, said key receiving channel defining at least one further profile, said key including a male member having a complementary shape that permits its entry into said key receiving channel only when said male member and said fastener are in a relative angular position that allows said key to engage at least one of said profiles to rotate said fastener, and said profiles are configured to prevent the male member of a non-matching key from providing sufficient torque to loosen the fastener, said method comprising generating machining code defining said first, said second and said further profiles, and using said code to:
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machine said key receiving channel in said rotary security fastener to define said first profile on said outer wall; machine said key receiving channel in said rotary security fastener to define said second profile on said inner wall; and machine said key receiving channel in said rotary security fastener to define said further profile. - View Dependent Claims (42)
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Specification