Utility cutter
First Claim
Patent Images
1. A knife comprising:
- a housing;
a blade comprising a cutting edge adapted to engage a material, the blade coupled to a blade shuttle, the blade and blade shuttle substantially enclosed within the housing when the blade shuttle is in a retracted position, the blade extended from the housing when the blade shuttle is in an extended position, the blade shuttle adapted to be conveyed to the retracted position upon decoupling of the blade shuttle from a blade trigger through a blade transmission based on the blade receiving a force on, and directed substantially perpendicular to, the cutting edge from the material, and based on a frictional force between the blade and the material that is less than a spring force exerted on the blade shuttle from a shuttle spring;
the blade trigger pivotally coupled to the housing, the blade shuttle conveyed from the retracted position to the extended position when the blade trigger pivots from a rest position to an engaged position where the blade trigger is at least partially enclosed withinthe housing; and
a trigger lock that comprises a trigger spring positioned between a trigger lock and the blade trigger to urge the trigger lock from an unlocked position to a locked position, wherein the shuttle spring is coupled to the blade shuttle and adapted to convey the blade shuttle to the refracted position, the shuttle spring adapted to automatically convey the blade shuttle to the retracted position upon disengagement of the blade from the material when the blade trigger is in the engaged position.
1 Assignment
0 Petitions
Accused Products
Abstract
A knife according to the present disclosure includes a housing and a blade. The blade includes a blade edge adapted to engage a material, and the blade is coupled to a blade shuttle. The blade and blade shuttle are substantially enclosed within the housing when the blade shuttle is in a retracted position, and the blade is extended from the housing when the blade shuttle is in an extended position. The blade shuttle is adapted to be conveyed to the retracted position based on the blade receiving a force directed substantially perpendicular to the blade edge.
104 Citations
20 Claims
-
1. A knife comprising:
-
a housing; a blade comprising a cutting edge adapted to engage a material, the blade coupled to a blade shuttle, the blade and blade shuttle substantially enclosed within the housing when the blade shuttle is in a retracted position, the blade extended from the housing when the blade shuttle is in an extended position, the blade shuttle adapted to be conveyed to the retracted position upon decoupling of the blade shuttle from a blade trigger through a blade transmission based on the blade receiving a force on, and directed substantially perpendicular to, the cutting edge from the material, and based on a frictional force between the blade and the material that is less than a spring force exerted on the blade shuttle from a shuttle spring; the blade trigger pivotally coupled to the housing, the blade shuttle conveyed from the retracted position to the extended position when the blade trigger pivots from a rest position to an engaged position where the blade trigger is at least partially enclosed within the housing; and
a trigger lock that comprises a trigger spring positioned between a trigger lock and the blade trigger to urge the trigger lock from an unlocked position to a locked position, wherein the shuttle spring is coupled to the blade shuttle and adapted to convey the blade shuttle to the refracted position, the shuttle spring adapted to automatically convey the blade shuttle to the retracted position upon disengagement of the blade from the material when the blade trigger is in the engaged position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A knife comprising:
-
a housing; a blade comprising a blade edge adapted to engage a material, the blade coupled to a blade shuttle, the blade and blade shuttle substantially enclosed within the housing when the blade shuttle is in a retracted position, the blade extended from the housing when the blade shuttle is in an extended position, the blade shuttle adapted to be conveyed to the retracted position based on the blade receiving a force directed substantially perpendicular to the blade edge; a blade trigger pivotally coupled to the housing, the blade shuttle conveyed from the retracted position to the extended position when the blade trigger pivots from a rest position to an engaged position, wherein the blade trigger comprises a cavity, the knife further comprising a trigger lock comprising a projection, the trigger lock substantially enclosed within the cavity and accessible at an exterior of the housing through the blade trigger, the trigger lock pivotally coupled to the blade trigger, the projection in contact with a stop pin coupled to the housing when the blade shuttle is in the retracted position, the blade trigger substantially prevented from pivoting from the rest position to the engaged position when the projection is in contact with the stop pin, the projection released from the stop pin upon rotation of the trigger lock, the blade trigger pivotable from the rest position to the engaged position when the projection is released from the stop pin; a shuttle spring coupled to the blade shuttle and adapted to convey the blade shuttle to the retracted position; and a trigger spring, the trigger lock in a locked position when the projection is in contact with the stop pin, the trigger lock in an unlocked position when the projection is released from the stop pin, the trigger spring urging the trigger lock from the unlocked position to the locked position, wherein the trigger spring comprises a compression spring coupled to one of the trigger lock and the blade trigger.
-
-
20. A knife comprising:
-
a housing; a blade comprising a blade edge adapted to engage a material, the blade coupled to a blade shuttle, the blade and blade shuttle substantially enclosed within the housing when the blade shuttle is in a retracted position, the blade extended from the housing when the blade shuttle is in an extended position, the blade shuttle adapted to be conveyed to the retracted position based on the blade receiving a force directed substantially perpendicular to the blade edge; a blade trigger pivotally coupled to the housing and comprising a cavity, the blade shuttle conveyed from the retracted position to the extended position when the blade trigger pivots from a rest position to an engaged position; a trigger lock comprising a projection, the trigger lock substantially enclosed within the cavity and accessible at an exterior of the housing through the blade trigger, the trigger lock pivotally coupled to the blade trigger, the projection in contact with a stop pin coupled to the housing when the blade shuttle is in the retracted position, the blade trigger substantially prevented from pivoting from the rest position to the engaged position when the projection is in contact with the stop pin, the projection released from the stop pin upon rotation of the trigger lock, the blade trigger pivotable from the rest position to the engaged position when the projection is released from the stop pin; a trigger spring, maintaining the trigger lock in a locked position when the projection is in contact with the stop pin, and the trigger lock in an unlocked position when the projection is released from the stop pin, the trigger spring urging the trigger lock from the unlocked position to the locked position and is adapted to receive a compressive force to convey the trigger lock from the locked position to the unlocked position, the blade trigger adapted to receive the compressive force to convey the blade trigger from the rest position to the engaged position; and a shuttle spring coupled to the blade shuttle and adapted to convey the blade shuttle to the retracted position.
-
Specification