Chalk line device
AssigneeIrwin Industrial Tool Company
InventorHamilton Sean Michael Whitney
Life of this patent
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Abstract
One embodiment of the invention provides a chalk line device having a helical gear and an improved locking assembly. The locking assembly comprises a first lock member having a lock button. The locking assembly also comprises a second lock member including an opening to lockingly engage the first lock member and having a plurality of teeth at one end disposed adjacent one of the helical gears used in this embodiment. The second lock member engages with the helical gear in response to a movement of the lock button member.
Claims16
A chalk line device having a housing including a gear cavity and a chalk cavity, a chalk line, and a spool for retaining the chalk line and disposed in the chalk cavity, the chalk line device comprising:
- a first helical gear disposed in the gear cavity;
- a second helical gear disposed in the gear cavity and engaging the first helical gear;
- a locking assembly comprising a first lock member and a second lock member lockingly engaging the first lock member, wherein the first lock member comprises a body member and a pair of legs integrally attached to the body member wherein the pair of legs includes a first leg and a second leg, the first leg having a first locking flange disposed on its end and extending perpendicular thereto, wherein the first locking flange secures the first lock member to lockingly engage with the second lock member;
- and,
- wherein the second lock member engages with one of the first or the second helical gears in cooperation with a movement of the first lock member.
A chalk line device having a housing including a gear cavity and a chalk cavity, a chalk line, and a spool for retaining the chalk line and disposed in the chalk cavity, the chalk line device comprising:
- a first helical gear disposed in the gear cavity;
- a second helical gear disposed in the gear cavity and engaging the first helical gear;
- a locking assembly comprising a first lock member and a second lock member lockingly engaging the first lock member;
- wherein the second lock member engages with one of the first or the second helical gears in cooperation with a movement of the first lock member;
- a clutch housing including a clutch configured to interlock with the second helical gear;
- and
- a clutch button member operably connected to the clutch and pressed downwardly to allow the clutch to disengage from the second helical gear.
Dependencies are inferred from the claim text.