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US 8,621,901 B2Granted
Lock system for vehicles and the like
AssigneeBauer Products, Inc.
InventorBruce Bacon
Life of this patent
Estimating the term…
Abstract
A lock system is provided having a lock housing and a lock barrel, a keeper shoulder, at least one full positioner shoulder, and a positioner shoulder having a U-shaped channel. A lock plug having a keyway and tumblers is received in the barrel for rotation between locked and unlocked positions. The tumblers include a key tumbler, a positioner tumbler and a keeper tumbler. The lock plug is rotatable between a first rotary position and a second rotary position. A control key is received into the keyway to retract the lock tumbler and partially retract the keeper tumbler. Removal of the lock plug from the lock barrel requires rotation of the lock plug from the first rotary position to the second rotary position and the presence of the control key within the lock plug when in the second rotary position.
Claims14
In a lock system for vehicles and the like of the type having at least one entry closure, comprising:
- a lock housing for mounting adjacent the entry closure and including a cylindrically-shaped lock barrel with at least one tumbler groove extending axially therealong, a keeper shoulder disposed proximate an inner portion of the lock barrel, at least one full positioner shoulder, and a positioner shoulder having a channel, the tumbler groove being disposed between and separating the full positioner shoulder from the positioner shoulder having the channel;
- a cylindrically-shaped lock plug shaped for close reception in the lock barrel for rotation between locked and unlocked positions, and including an axially extending keyway and a plurality of radially shiftable outwardly biased tumblers comprising at least one key actuated lock tumbler, a positioner tumbler disposed adjacent an outer portion of the lock plug, and a keeper tumbler disposed adjacent to an inner portion of the lock plug for engagement with the keeper shoulder, wherein the lock plug includes a first rotary position and a second rotary position located a predetermined angle from the first rotary position, the keeper tumbler being axially aligned with the channel within the lock plug in the second rotary position;
- a control key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to retract the lock tumbler and the keeper tumbler;
- a master key having a shank portion shaped for close reception in said keyway with a plurality of bits configured to retract only the lock tumbler and the positioner tumbler;
- and
- a customer key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to retract only the positioner tumbler and the lock tumbler;
- wherein the lock barrel further comprises a partial positioner shoulder having an inner end disposed proximate the inner portion of the lock plug, an outer end disposed proximate the outer portion of the lock plug and a cutout portion rotationally aligned with the positioner tumbler when assembled with a tip and a cutout face;
- whereby removal of the lock plug from the lock barrel requires rotation of the lock plug from the first rotary position to the second rotary position and the presence of the control key within the keyway and wherein rotation of the lock plug from the first rotary position to the second rotary position is obtained by insertion of the control key within the keyway and rotation of the lock plug from the first rotary position to the second rotary position, wherein the positioner tumbler is rotated into the cutout portion, thereby permitting axial shifting of the lock plug out of the lock barrel for repair or replacement.
5 more elements
A lock system for an entry closure, comprising:
- a lock housing for mounting adjacent the entry closure and including a cylindrically-shaped lock barrel with at least one tumbler groove extending axially therealong, a keeper shoulder disposed proximate an inner portion of said lock barrel, at least one full positioner shoulder, and a positioner shoulder having a substantially U-shaped channel;
- a cylindrically-shaped lock plug shaped for close reception in the lock barrel for rotation between locked and unlocked positions, and including an axially extending keyway and a plurality of radially shiftable outwardly biased tumblers comprising at least one key actuated lock tumbler, a positioner tumbler disposed adjacent to an outer portion of the lock plug, and a keeper tumbler disposed adjacent to an inner portion of the lock plug;
- a control key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to retract the lock tumbler and the keeper tumbler when inserted into the keyway;
- a master key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to fully retract both the lock tumbler and the positioner tumbler, and not retract the keeper tumbler when inserted into the keyway;
- a customer key having a shank portion shaped for close reception in said keyway with a plurality of bits configured to fully retract both the positioner tumbler and the lock tumbler, and not retract the keeper tumbler when inserted into the keyway;
- and
- a partial positioner shoulder including and extending from an inner end disposed proximate the keeper shoulder to an outer end disposed proximate the outer portion of the lock plug, wherein the outer end includes a cutout portion;
- whereby removal of the lock plug from the lock barrel requires rotation of the lock plug from the first rotary position to the second rotary position wherein the keeper tumbler is axially aligned with the U-shaped channel and the presence of the control key within the keyway and wherein rotation of the lock plug from the first rotary position to the second rotary position is obtained by insertion of the control key within the keyway and rotation of the lock plug from the first rotary position to the second rotary position, wherein the positioner tumbler is rotated into the cutout portion, thereby permitting axial shifting of the lock plug out of the lock barrel for repair or replacement.
5 more elements
A lock system for vehicle entry closures, comprising:
- a lock housing for mounting adjacent the entry closure and including a cylindrically-shaped lock barrel with a plurality of tumbler grooves extending axially therealong, a keeper shoulder disposed proximate an inner portion of the lock barrel, at least one full positioner shoulder and a positioner shoulder having a substantially U-shaped channel, the tumbler groove being disposed between and separating the full positioner shoulder from the positioner shoulder having the U-shaped channel;
- a cylindrically-shaped lock plug shaped for close reception in the lock barrel for rotation between locked and unlocked positions, and including an axially extending keyway and a plurality of radially shiftable outwardly biased tumblers comprising at least one key actuated lock tumbler, a positioner tumbler disposed adjacent to an outer portion of said lock plug, and a keeper tumbler disposed adjacent to an inner portion of said lock plug, the lock plug having a first rotary position in the lock barrel wherein the keeper tumbler is positioned for abutting contact with the keeper shoulder and a second rotary position wherein the keeper tumbler is axially aligned with the U-shaped channel;
- and
- a control key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to retract the lock tumbler and the keeper tumbler;
- a master key having a shank portion shaped for close reception in said keyway with a plurality of bits configured to retract only the lock tumbler and the positioner tumbler;
- and
- a customer key having a shank portion shaped for close reception in the keyway with a plurality of bits configured to retract only the positioner tumbler and the lock tumbler;
- the lock barrel further comprising a partial positioner shoulder including and extending from an inner end located proximate the keeper shoulder to an outer end including a cutout portion, the partial positioner shoulder further including a tip that extends to the outer end of the partial positioner shoulder, wherein the tip is axially outward of a cutout face of the cutout portion, and wherein the cutout portion is configured to allow the positioner tumbler to rotate within the cutout portion between the tip of the partial positioner shoulder and an adjacent full positioner shoulder when the control key is inserted within the keyway;
- whereby removal of the lock plug from the lock barrel requires rotation of the lock plug from the first rotary position to the second rotary position wherein the keeper tumbler is axially aligned with the U-shaped channel and the presence of the control key within the keyway and wherein rotation of the lock plug from the first rotary position to the second rotary position is obtained by insertion of the control key within the keyway and rotation of the lock plug from the first rotary position to the second rotary position, wherein the positioner tumbler is rotated into the cutout portion, thereby permitting axial shifting of the lock plug out of the lock barrel for repair or replacement.
6 more elements
Dependencies are inferred from the claim text.