[특허]Multistage solenoid fastening device

Black & Decker Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Multistage solenoid fastening device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B25C-005/15 B25C-001/06
미국특허분류(USC)	173/002; 173/090; 173/011; 227/131
출원번호	UP-0402974 (2009-03-12)
등록번호	US-7665540 (2010-04-09)
발명자 / 주소	Gross, Paul G. Cruise, Nathan J.
출원인 / 주소	Black & Decker Inc.
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 1 인용 특허 : 109

초록
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A method of driving a fastener into a workpiece with a tool generally includes retracting a trigger into a housing of the tool to execute a driver sequence and establishing a magnetic field in a multistage solenoid. The magnetic field is established in at least one of a first stage and a second stage. The method includes drawing an armature member to an extended condition from a retracted condition with the magnetic field and determining a position of the armature member relative to at least one of the first stage and the second stage. The method also in...

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What is claimed is: 1. A method of driving a fastener into a workpiece by executing a driver sequence with a control module in a portable tool, the method comprising: retracting a trigger into a housing of the portable tool to execute the driver sequence; establishing a magnetic field in a multistage solenoid with the control module in at least one of a first stage and a second stage; drawing an armature member to an extended condition from a retracted condition with said magnetic field; determining a position of said armature member with the control module relative to at least one of said first stage and said second stage; directing power between said first stage and said second stage with the control module during the driver sequence based on said position of said armature member. 2. The method of claim 1 wherein said determining of said position of said armature member includes determining a change in a current associated with at least one of said first stage and said second stage, said change in said current being caused by a change in an inductance of a circuit associated with at least one of said first stage and said second stage. 3. The method of claim 1 wherein said determining of said position of said armature member includes detecting a current inflection point associated with at least one of said first stage and said second stage. 4. The method of claim 1 wherein said determining of said position of said armature member includes communicating with one or more sensors on said multistage solenoid that detect said position of said armature member. 5. The method claim 1 further comprising moving a driver blade member with said armature member from said retracted condition to said extended condition with said multistage solenoid, said driver blade member in said extended condition operable to drive the fastener. 6. The method of claim 1 further comprising striking a portion of said driver blade member with said armature member to move said driver blade member from said retracted condition to said extended condition. 7. The method of claim 1 further comprising moving said armature members from said extended condition to said retracted condition with a force generated by a spring member and without a force generated by said multistage solenoid. 8. A method of driving a fastener into a workpiece by executing a driver sequence with a control module to establish a magnetic field in a multistage solenoid in a portable tool, the method comprising: positioning an armature that is connected to a driver blade in the multistage solenoid having at least a first stage and a second stage, the control module moves said driver blade and said armature between a retracted condition and an extended condition; engaging a contact trip mechanism of the portable tool; retracting a trigger into a housing of the portable tool to execute the driver sequence; establishing the magnetic field in a first stage of the multistage solenoid with the control module when said contact trip mechanism is engaged and said trigger is retracted; moving said armature member toward said extended condition from said retracted condition with the magnetic field of said first stage; determining a position of said armature member with the control module relative to said first stage and said second stage; directing power from said first stage to said second stage to establish the magnetic field in said second stage with the control module during the driver sequence based on said position of said armature member; collapsing the magnetic field in said first stage; drawing said armature member to said extended condition, said driver blade in said extended condition operable to drive the fastener. 9. The method of claim 8 further comprising: reversing the magnetic field in said second stage; moving said armature member toward said retracted condition from said extended condition with the magnetic field of said second stage; directing power from said second stage to said first stage to establish the magnetic field in said first stage during the driver sequence based on said position of said armature member; collapsing the magnetic field of said second stage; drawing said armature member to said retracted condition. 10. The method of claim 8 further comprising: collapsing the magnetic field of said second stage; moving said armature member from said extended condition to said retracted condition with a force generated by a spring member. 11. The method of claim 8 wherein said determining of said position of said armature member includes determining a change in a current associated with at least one of said first stage and said second stage, said change in current being caused by a change in an inductance of a circuit associated with said at least one of said first stage and said second stage. 12. The method of claim 8 wherein said determining of said position of said armature member includes detecting a current inflection point associated with at least one of said first stage and said second stage. 13. The method of claim 8 wherein said determining of said position of said armature member includes communicating with one or more sensors on the multistage solenoid that detect said position of said armature member. 14. The method of claim 8 further comprising striking a portion of said driver blade member with said armature member to move said driver blade member from said retracted condition to said extended condition. 15. A method of driving a fastener into a workpiece by executing a driver sequence with a control module to establish a magnetic field in a multistage solenoid in a portable tool, the method comprising: positioning an armature that is connected to a driver blade member in the multistage solenoid having at least a first stage and a second stage; engaging a contact trip mechanism on the portable tool; retracting a trigger into a housing to execute the driver sequence; determining whether a value of current delivered to the multistage solenoid is indicative of said driver blade member being unable to move between a retracted condition and an extended condition; establishing the magnetic field in said first stage when the control module determines whether said contact trip mechanism is engaged, said trigger is retracted, and said value of current delivered to the multistage solenoid is indicative of said driver blade member being to move; drawing an armature member toward an extended condition from a retracted condition with the magnetic field established by the control module in said first stage; determining when a value of a rate of change of current at said first stage changes from being positive to being negative; collapsing said magnetic field in said first stage and establishing a magnetic field in said second stage when the control module determines whether said value of said rate of change of said current changes from said positive value to said negative value. 16. The method of claim 15 further comprising: reversing the magnetic field in said second stage; moving said armature member toward said retracted condition from said extended condition with the magnetic field established by the control module in said second stage; determining when a value of a rate of change of current at said second stage changes from being positive to being negative; collapsing said magnetic field in said second stage and establishing a magnetic field in said first stage when the control module determines whether said value of said rate of change of said current at said second stage changes from said positive value to said negative value. 17. The method of claim 15 further comprising: collapsing the magnetic field of said second stage; moving said armature member from said extended condition to said retracted condition with a force generated by a spring member.

이 특허에 인용된 특허 (109)

이 특허를 인용한 특허 피인용횟수: 1

Miwa, Tatsuya; Ikeda, Masaki. Rotary tool. USP2014048689900.

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Multistage solenoid fastening device

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이 특허에 인용된 특허 (109)

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Multistage solenoid fastening device

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이 특허에 인용된 특허 (109)

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