IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0595406
(2012-08-27)
|
등록번호 |
US-8561305
(2013-10-22)
|
발명자
/ 주소 |
- Davis, Raymond E.
- Hampton, Clifton Glenn
|
출원인 / 주소 |
- ADCO Industries—Technologies, L.P.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
80 |
초록
▼
A knife includes a handle enclosing one or more of a blade, a blade shuttle, a transmission, and a trigger, where the handle includes a blade aperture. The blade shuttle is longitudinally moveable relative to the handle from a rest position to a first extended position and the blade shuttle is movea
A knife includes a handle enclosing one or more of a blade, a blade shuttle, a transmission, and a trigger, where the handle includes a blade aperture. The blade shuttle is longitudinally moveable relative to the handle from a rest position to a first extended position and the blade shuttle is moveable longitudinally from the first extended position to a cutting position when the blade is engaged in a workpiece. The blade shuttle is automatically retracted from the cutting position to the rest position when the blade is disengaged from the workpiece. The blade is detachably secured within the blade shuttle and protrudes a first distance through the blade aperture at the first extended position. The blade is extended from the first distance a substantially fixed length when engaged in the workpiece. The blade is adapted to automatically retract within the handle when disengaged from the workpiece.
대표청구항
▼
1. A knife, comprising: a handle enclosing at least a portion of one or more of a blade, a blade shuttle, a transmission, and a trigger, the handle comprising a blade aperture;the blade shuttle longitudinally moveable relative to the handle from a rest position to a first extended position and from
1. A knife, comprising: a handle enclosing at least a portion of one or more of a blade, a blade shuttle, a transmission, and a trigger, the handle comprising a blade aperture;the blade shuttle longitudinally moveable relative to the handle from a rest position to a first extended position and from the rest position to a second extended position, the first extended position differentiated from the second extended position, the blade shuttle moveable longitudinally from the first extended position and the second extended position to a cutting position when the blade is engaged in a workpiece, the knife configured such that the blade shuttle is automatically retracted from the cutting position to the rest position when the blade is disengaged from the workpiece;the blade secured within the blade shuttle, a distal end of the blade protruding a first distance from the blade aperture at the first extended position and a second distance from the blade aperture at the second extended position, the first distance differentiated from the second distance, the knife configured such that when the distal end of the blade protrudes the first distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the first distance from the blade aperture when the blade is engaged in the workpiece, and when the distal end of the blade protrudes the second distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the second distance from the blade aperture when the blade is engaged in the workpiece, the knife configured such that the blade is automatically retracted to a safe position within the handle when the blade is disengaged from the workpiece; andthe trigger adapted to drive the blade shuttle from the rest position to the first extended position and from the rest position to the second extended position via the transmission, the blade shuttle is in a fully extended position relative to the rest position in both the first and second extended positions; anda position selector interposed between the handle and the trigger and adapted to limit a trigger stroke relative to the handle so as to drive the blade shuttle to one of the first extended position and the second extended position, the position selector comprising:a stem;a base comprising a first seat and a second seat; anda dial accessible to an exterior of the handle and coupled to the stem, the dial adapted to rotate the stem to a first position selection and a second position selection, the stem adapted to protrude into the first seat at the first position selection upon a first actuation of the trigger and the second seat at the second position selection upon a second actuation of the trigger, the blade adapted to protrude the first distance through the blade aperture at the first position selection upon the first actuation of the trigger and the second distance through the blade aperture at the second position selection upon the second actuation of the trigger. 2. The knife of claim 1, the transmission comprising: a lever;a first spring operatively coupled to the trigger, the first spring adapted to: direct the lever to engage the blade shuttle in the first extended position and the second extended position; androtate the lever to disengage the lever and the blade shuttle in the cutting position;a second spring operatively coupled to the handle and the blade shuttle, the second spring adapted to automatically retract the blade shuttle from the cutting position to the rest position. 3. The knife of claim 2, wherein the second spring exerts no force on the blade shuttle in the rest position. 4. The knife of claim 2, wherein the knife further comprises at least a third spring adapted to act between the handle and the trigger and cooperate with the first and second springs to maintain a substantially constant force magnitude required to actuate the trigger and maintain the trigger in the actuated position. 5. The knife of claim 4, wherein the third spring is adapted to act between the handle and the trigger and cooperate with the first and second springs to maintain a substantially constant force magnitude required to actuate the trigger and maintain the trigger in the actuated position upon the blade engaging the workpiece. 6. The knife of claim 4, the force magnitude being between approximately 4 ounces and approximately 10 ounces. 7. The knife of claim 1, the knife further configured such that the blade shuttle is automatically refracted from the cutting position to the rest position when the blade is disengaged from the workpiece with the trigger in the actuated position. 8. The knife of claim 1, wherein the distance from the distal end of the blade to the blade aperture is approximately 0.028 inches greater than the first distance from the blade aperture when the blade is engaged in the workpiece. 9. The knife of claim 1, the blade shuttle moveable longitudinally from the rest position to a third extended position, the third extended position differentiated from the first and second extended positions, the blade shuttle moveable longitudinally from the third extended position to the cutting position when the blade is engaged in the workpiece. 10. The knife of claim 1, wherein the position selector is further adapted to limit the trigger to a lock position, the blade shuttle maintained at the rest position when the trigger is in the lock position. 11. The knife of claim 1, wherein the position selector further comprises a selector spring adapted to maintain the dial at a selected position. 12. The knife of claim 11, wherein the selected position comprises one of: the first position selection;the second position selection;a third position selection; anda lock position. 13. The knife of claim 1, wherein the handle further comprises: a front handle edge at the blade aperture, a plane tangential to the front handle edge and a plane tangential to the cutting edge of the blade defining a first obtuse angle; anda front contour, a plane tangential to the front contour and a plane tangential to the blade defining a second obtuse angle, the first obtuse angle and the second obtuse angle defining a compound angle of cut. 14. The knife of claim 13, wherein the knife further comprises a blade guide coupled to the handle, the blade guide adapted to direct a cut of the blade at the second obtuse angle. 15. The knife of claim 1, wherein the handle comprises a tapered terminal end at the blade aperture adapted to substantially constrain a movement of the blade transverse to a longitudinal dimension of the blade when the blade shuttle is in the cutting position. 16. The knife of claim 1, wherein the handle further comprises a longitudinally coupled two-piece handle assembly. 17. The knife of claim 1, wherein the blade shuttle comprises a spare blade receptacle and the knife further comprises: a cover, at least a portion of the cover detachably secured to the handle to provide access to the blade; anda blade cover, at least a portion of the blade cover detachably secured to the handle to provide access to the spare blade receptacle. 18. The knife of claim 1, further comprising a handle clip. 19. A knife, comprising: a handle enclosing at least a portion of one or more of: a blade, a blade shuttle, a transmission, and a trigger, the handle comprising: a blade aperture;a front handle edge at the blade aperture, a plane tangential to the front handle edge and a plane tangential to the cutting edge of the blade defining a first obtuse angle; anda front contour, a plane tangential to the front contour and a plane tangential to the blade defining a second obtuse angle, the first obtuse angle and the second obtuse angle defining a compound angle of cut;the blade shuttle longitudinally moveable relative to the handle from a rest position to a first extended position and from the rest position to a second extended position, the first extended position differentiated from the second extended position, the blade shuttle moveable longitudinally from the first extended position and the second extended position to a cutting position when the blade is engaged in a workpiece, the knife configured such that the blade shuttle is automatically retracted from the cutting position to the rest position when the blade is disengaged from the workpiece;the blade secured within the blade shuttle, a distal end of the blade protruding a first distance from the blade aperture at the first extended position and a second distance from the blade aperture at the second extended position, the first distance differentiated from the second distance, the knife configured such that when the distal end of the blade protrudes the first distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the first distance from the blade aperture when the blade is engaged in the workpiece, and when the distal end of the blade protrudes the second distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the second distance from the blade aperture when the blade is engaged in the workpiece, the knife configured such that the blade is automatically retracted to a safe position within the handle when the blade is disengaged from the workpiece; andthe trigger adapted to drive the blade shuttle from the rest position to the first extended position and from the rest position to the second extended position via the transmission, the blade shuttle is in a fully extended position relative to the rest position in both the first and second extended positions; anda position selector interposed between the handle and the trigger and adapted to limit a trigger stroke relative to the handle so as to drive the blade shuttle to one of the first extended position and the second extended position. 20. A knife, comprising: a handle enclosing at least a portion of one or more of: a blade, a blade shuttle, a transmission, and a trigger, the handle comprising a blade aperture;the blade shuttle longitudinally moveable relative to the handle from a rest position to a first extended position and from the rest position to a second extended position, the first extended position differentiated from the second extended position, the blade shuttle moveable longitudinally from the first extended position and the second extended position to a cutting position when the blade is engaged in a workpiece, the knife configured such that the blade shuttle is automatically retracted from the cutting position to the rest position when the blade is disengaged from the workpiece, wherein the blade shuttle comprises a spare blade receptacle;the blade secured within the blade shuttle, a distal end of the blade protruding a first distance from the blade aperture at the first extended position and a second distance from the blade aperture at the second extended position, the first distance differentiated from the second distance, the knife configured such that when the distal end of the blade protrudes the first distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the first distance from the blade aperture when the blade is engaged in the workpiece, and when the distal end of the blade protrudes the second distance from the blade aperture, the distal end of the blade moves to a distance from the blade aperture greater than the second distance from the blade aperture when the blade is engaged in the workpiece, the knife configured such that the blade is automatically retracted to a safe position within the handle when the blade is disengaged from the workpiece;the trigger adapted to drive the blade shuttle from the rest position to the first extended position and from the rest position to the second extended position via the transmission, the blade shuttle is in a fully extended position relative to the rest position in both the first and second extended positions;a position selector interposed between the handle and the trigger and adapted to limit a trigger stroke relative to the handle so as to drive the blade shuttle to one of the first extended position and the second extended position;a cover, at least a portion of the cover detachably secured to the handle to provide access to the blade; anda blade cover, at least a portion of the blade cover detachably secured to the handle to provide access to the spare blade receptacle.
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