Cutting tool
AssigneeMoving Edge Limited
InventorRoger Bernard John
Life of this patent
Estimating the term…
Abstract
A cutting tool having a blade and a member which is biassed toward a safety position, in which the member forms a guard for the blade, but which may be displaced for exposing the blade by bringing the tool into cutting contact with a workpiece. The cutting tool includes a locking mechanism having a trigger which must be moved from a first position to a second position to release the guard member from its safety position and which is arranged, so that each time the guard member is released from its safety position, it is displaced through a predetermined distance and then returns to its safety position. The guard member will become locked in place regardless of the position of the trigger.
Claims24
A cutting tool comprising a blade and a member which is biassed towards a safety position in which the member forms a guard for the blade, but which may be displaced to expose the blade by bringing the tool into cutting contact with a workpiece, and a locking mechanism having a trigger which must be moved from a first position to a second position to release the guard member from its safety position and arranged such that each time the guard member is released from its safety position, the guard member is displaced through a predetermined distance, and then returns to its safety position, the guard member will become locked in place regardless of the position of the trigger.
A cutting tool comprising a blade and a sliding blade-carriage formed with an elongate projection which extends substantially perpendicularly through a slot formed in the blade, the projection being rotatable about an axis parallel to its longitudinal axis and the slot being of substantially the same diameter as the projection and extending substantially perpendicularly to the axis of movement of the carriage, so that as the projection is rotated, the blade is correspondingly advanced or withdrawn relative to the carriage.
A cutting tool, comprising:
- a passageway for receiving an elongate cutting blade formed with at least one line of weakness defining successive blade sections;
- a displaceable portion having a first wall and a second wall with said first wall and said second wall being opposed to one another and forming a portion of said passageway, said first wall and said second wall being pivotally mounted for displacement to one said of said passageway for forming a gap in said passageway, enabling an end section of said elongate cutting blade to be introduced into said gap, said displaceable portion being then returnable into line with said passageway for detaching said end section of said elongate cutting blade from a remainder of said elongate cutting blade;
- and,
- a containment region for retaining said end section of said elongate cutting blade following said detaching of said end section.
A cutting tool comprising a replaceable blade-carriage within which a blade is carried such that the blade may be slid from an exposed position to a retracted position and comprising means for preventing the cartridge from being removed from the tool while the blade is in its exposed position and means for locking the blade in its retracted position as the cartridge is removed from the tool.
Dependencies are inferred from the claim text.