LOCK CYLINDER WITH LOCKING MEMBER
First Claim
1. A lock cylinder comprising:
- a housing including a cylindrical wall defining a cylindrical cavity, and an outer pin chamber communicating with the cavity;
an outer pin slidably housed in the outer pin chamber;
a plug disposed in the cavity and being rotatable within the cavity between a locked position and an unlocked position, the plug having a generally cylindrical outer surface and having an inner pin chamber that is aligned with the outer pin chamber when the plug is in the locked position;
a key slot disposed at least partially through the plug, the key slot communicating with the inner pin chamber;
an inner pin slidably housed in the inner pin chamber, the inner pin being engageable with a key inserted into the key slot, and the inner pin being engageable with the outer pin when the plug is in the locked position; and
a lock member in communication with the housing and the plug, the lock member configured to selectively disable the lock cylinder in response to partial rotation of the plug from the locked position without an appropriate key in the key slot.
4 Assignments
0 Petitions
Accused Products
Abstract
A lock cylinder that includes a housing and a plug. The housing defines a cylindrical cavity, and an outer pin chamber in communication with the cavity. The plug is rotatable within the cavity, and includes a key slot, a cylindrical outer surface, and an inner pin chamber aligned with the outer pin chamber when the plug is in a locked position. An outer pin is housed in the outer pin chamber, and an inner pin is housed in the inner pin chamber. The inner pin is engageable with a key inserted into the key slot, and further engageable with the outer pin. The lock cylinder also includes a lock member in communication with the housing and the plug that selectively disables the lock cylinder in response to partial rotation of the plug from the locked position without an appropriate key in the key slot.
37 Citations
69 Claims
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1. A lock cylinder comprising:
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a housing including a cylindrical wall defining a cylindrical cavity, and an outer pin chamber communicating with the cavity; an outer pin slidably housed in the outer pin chamber; a plug disposed in the cavity and being rotatable within the cavity between a locked position and an unlocked position, the plug having a generally cylindrical outer surface and having an inner pin chamber that is aligned with the outer pin chamber when the plug is in the locked position; a key slot disposed at least partially through the plug, the key slot communicating with the inner pin chamber; an inner pin slidably housed in the inner pin chamber, the inner pin being engageable with a key inserted into the key slot, and the inner pin being engageable with the outer pin when the plug is in the locked position; and a lock member in communication with the housing and the plug, the lock member configured to selectively disable the lock cylinder in response to partial rotation of the plug from the locked position without an appropriate key in the key slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A lock cylinder comprising:
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a housing including a cylindrical wall defining a cylindrical cavity, an outer pin chamber communicating with the cavity and defining a vertical axis, and a recess communicating With the cavity, the recess being angularly spaced from the vertical axis of the outer pin chamber; an outer pin slidably housed in the outer pin chamber; a plug disposed in the cavity and being rotatable within the cavity between a locked position and an unlocked position, the plug having a generally cylindrical outer surface and having an inner pin chamber that is aligned with the outer pin chamber when the plug is in the locked position; a key slot disposed at least partially through the plug, the key slot communicating with the inner pin chamber; an inner pin slidably housed in the inner pin chamber, the inner pin being engageable with a key inserted into the key slot, and the inner pin being engageable with the outer pin when the plug is in the locked position; and a lock member movably mounted on the plug, the lock member being movable into the recess in response to partial rotation of the plug from the locked position without an appropriate key in the key slot. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A lock cylinder comprising:
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a housing including a cylindrical wall defining a cylindrical cavity and an outer pin chamber communicating with the cavity; an outer pin slidably housed in the outer pin chamber; a plug disposed in the cavity and being rotatable within the cavity between a locked position and an unlocked position, the plug having a generally cylindrical outer surface and having an inner pin chamber that is aligned with the outer pin chamber when the plug is in the locked position; a key slot disposed at least partially through the plug, the key slot communicating with the inner pin chamber; an inner pin slidably housed in the inner pin chamber, the inner pin being engageable with a key inserted into the key slot, and the inner pin being engageable with the outer pin when the plug is in the locked position; and a lock member mounted on the plug for movement between a blocking position and a withdrawn position, the lock member being engageable with the inner pin such that the lock member is held in the withdrawn position by the inner pin during rotation of the plug to the unlocked position with an appropriate key in the key slot. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A method of operating a lock cylinder including a housing including a cylindrical wall defining a cylindrical cavity, and an outer pin chamber communicating with the cavity, an outer pin slidably housed in the outer pin chamber, a plug disposed in the cavity and being rotatable within the cavity between a locked position and an unlocked position, the plug having a generally cylindrical outer surface and having an inner pin chamber aligned with the outer pin chamber when the plug is in the locked position, a key slot disposed at least partially through the plug, the key slot communicating with the inner pin chamber, and an inner pin slidably housed in the inner pin chamber, the inner pin being engageable with a key inserted into the key slot, and the inner pin being engageable with the outer pin when the plug is in the locked position, the method comprising:
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permitting rotation of the plug from the locked position to the unlocked position when an appropriate key is inserted into the key slot; and resisting further rotation of the plug to the unlocked position after partial rotation of the plug from the locked position when an inappropriate key is inserted into the key slot. - View Dependent Claims (65, 66, 67, 68, 69)
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Specification