WO2005097441B1 - Activation arm configuration for a power tool - Google Patents

Activation arm configuration for a power tool

Info

Publication number
WO2005097441B1
WO2005097441B1 PCT/US2005/011075 US2005011075W WO2005097441B1 WO 2005097441 B1 WO2005097441 B1 WO 2005097441B1 US 2005011075 W US2005011075 W US 2005011075W WO 2005097441 B1 WO2005097441 B1 WO 2005097441B1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
driver
point
power tool
roller
Prior art date
Application number
PCT/US2005/011075
Other languages
French (fr)
Other versions
WO2005097441A2 (en
WO2005097441A3 (en
Inventor
James J Kenney
Paul G Gross
Original Assignee
Black & Decker Inc
James J Kenney
Paul G Gross
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Black & Decker Inc, James J Kenney, Paul G Gross filed Critical Black & Decker Inc
Priority to DE602005024938T priority Critical patent/DE602005024938D1/en
Priority to EP05734188A priority patent/EP1729940B1/en
Priority to AT05734188T priority patent/ATE489202T1/en
Publication of WO2005097441A2 publication Critical patent/WO2005097441A2/en
Publication of WO2005097441A3 publication Critical patent/WO2005097441A3/en
Publication of WO2005097441B1 publication Critical patent/WO2005097441B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Abstract

A driving tool, such as a nailer, with a flywheel, a driver and an activation arm assembly that is configured to drive the driver into contact with the flywheel to permit energy to be transmitted between the flywheel and the driver so that the driver will translate along an axis.

Claims

AMENDED CLAIMS received by the International Bureau on 26 September 2006 (26.09.06)
1. A power tool comprising: a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and an activation arm assembly having a first arm, a second arm, a third arm, a roller, a first spring and a second spring, the first arm being pivotally coupled to the structure at a first point, the second arm being pivotally coupled to the first arm at a second point, the third arm being pivotally coupled to the second arm at a third point, the roller being mounted on the third arm, the first spring biasing the second arm about the second point in a rotational direction toward the driver, the second spring biasing the third arm about the third point in the rotational direction toward the driver; wherein rotation of the first arm about the first point in the rotational direction toward the driver engages the driver to both the roller and the flywheel to thereby transfer energy from the flywheel to the driver.
2. The power tool of Claim 1 , wherein the driver includes a cam profile with a first cam portion and wherein a force that is exerted by the driver onto the roller increases as the roller rolls over the first cam portion and the driver is translated along the translation axis in a first direction.
3. The power tool of Claim 2, wherein the second arm pivots about the second point when the roller rolls over the first cam portion and the driver is translated along the translation axis in the first direction.
4. The power tool of Claim 2, wherein the cam profile includes a second cam portion and wherein a force that is exerted by the driver onto the roller decreases as the roller rolls over the second cam portion and the driver is translated along the translation axis in the first direction.
5. The power tool of Claim 4, wherein the third arm pivots about the third point when the driver is translated along the translation axis in a second direction opposite the first direction such that the roller is pivoted away from the driver.
6. The power tool of Claim 2, further comprising a clutch that inhibits rotation of the activation arm assembly about the first point in a rotational direction away from the driver in response to the force that is exerted by the driver onto the roller.
7. The power tool of Claim 6, wherein the first arm carries a cam follower that is engaged by a cam member to pivot the activation arm assembly about the first point to thereby initiate engagement of the roller to the driver.
8. The fastening tool of Claim 7, wherein a portion of the clutch is carried by the cam member.
- 47 -
9. The fastening tool of Claim 8, wherein the clutch includes a pair of tapered engagement surfaces and a pair of mating engagement surfaces, each of the mating engagement surfaces being configured to frictionally engage a respective one of the tapered engagement surfaces to inhibit movement of the cam member.
10. The power tool of Claim 1 , further comprising a magazine assembly and a nosepiece that is coupled to the structure, the magazine assembly being configured to hold a plurality of fasteners and sequentially feed the fasteners into the nosepiece, the nosepiece holding a first one of the fasteners in-line with the driver.
11. A power tool comprising: a structure; a flywheel mounted on the structure; a driver that is translatable along a driver axis; an activation arm assembly having a first arm, a second arm, a third arm, and a roller, the first arm being pivotally mounted to the structure at a first point, the second arm being pivotally coupled to the first arm at a second point, the third arm being coupled to the second arm and supporting the roller; and an actuator for selectively pivoting the first arm about the first point in a first rotational direction to drive the roller against the driver and into engagement with the flywheel.
12. A power tool comprising: a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; an activation arm assembly having a first arm, a second arm, a third arm, and a roller, the first arm being pivotally coupled to the structure at a first point, the second arm being pivotally coupled to the first arm at a second point, the third arm being coupled to the second arm and supporting the roller; and an actuator for selectively pivoting the first arm about the first point in a first rotational direction to drive the roller against the driver and into engagement with the flywheel; wherein the activation arm assembly further comprises a spring disposed between the first and second arms, the spring operatively biasing the second arm about the second point in the first rotational direction.
13. The power tool of Claim 12, wherein the spring is a leaf spring.
14. The power tool of Claim 12, wherein the driver includes a cam profile with a first cam portion that loads the spring and moves the second arm in a second rotational direction opposite the first rotational direction.
15. The power tool of Claim 11 , wherein the third arm is pivotally coupled to the second arm.
16. A power tool comprising:
- 48 - a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; an activation arm assembly having a first arm, a second arm, a third arm, and a roller, the first arm being pivotally coupled to the structure at a first point, the second arm being pivotally coupled to the first arm at a second point, the third arm being coupled to the second arm and supporting the roller; and an actuator for selectively pivoting the first arm about the first point in a first rotational direction to drive the roller against the driver and into engagement with the flywheel; wherein the third arm is pivotally coupled to the second arm and_wherein the activation arm assembly includes a spring that biases the third arm about the third point in the first rotational direction.
17. The power tool of Claim 16, wherein the activation arm assembly further includes a spacer and a yoke, the spacer being coupled to the second arm and including an aperture, the yoke including a cross bar, which is pivotally coupled to the third arm, and a transverse member about which the spring is disposed, the transverse member and the spring being at least partially received in the aperture.
18. The power tool of Claim 16, wherein the activation arm assembly further comprises a second spring disposed between the first and second arms, the second spring operatively biasing the second arm about the second point in the first rotational direction and the driver includes a cam profile with a cam portion that unloads the second spring and moves the second arm in a second rotational direction opposite the first rotational direction.
19. A power tool comprising: a structural backbone; a flywheel mounted on the structural backbone; a driver that is translatable along a driver axis; and an activation arm assembly having a first arm, a second arm, a third arm, a roller, a first spring and a second spring, the first arm being pivotally coupled to the structural backbone at a first point, the second arm being pivotally coupled to the first arm at a second point, the third arm being pivotally coupled to the second arm at a third point, the roller being mounted on the third arm, the first spring biasing the second arm about the second point in a first rotational direction, the second spring biasing the third arm about the third point in the first rotational direction; an actuator for selectively pivoting the first arm about the first point in the first rotational direction to drive the roller against the driver and into engagement with the flywheel; and a clutch for inhibiting movement of the first arm about the first point in a second rotational direction opposite the first rotational direction in response to a force exerted by the driver onto the roller.
- 49 -
20. The power tool of Claim 19, wherein the first arm includes a pair of generally L-shaped arm members.
21. The power tool of Claim 20, wherein a follower is coupled to the arm members and wherein the power tool further comprises a cam that is moved by the actuator, the cam cooperating with the cam follower to rotate the first arm in the first rotational direction.
22. The power tool of Claim 19, wherein the third arm includes a member that is disposed in a range slot formed in the second arm and wherein the range slot and the member cooperate to limit an amount by which the third arm may be pivoted about the third point.
23. A power tool comprising: a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; an activation arm assembly that is pivotally coupled to the structure, the activation arm assembly having a roller, a plurality of arm members and a spring, the roller being mounted on one of the arm members, the spring biasing the one of the arm members in a first rotational direction; and an actuator coupled to the structure, the actuator rotating a second one of the arm members in a second rotational direction opposite the first rotational position to rotate the roller against the driver to drivingly engage the driver to the flywheel; wherein the one of the arm members is rotatable in the second rotational direction to permit the driver disengage the flywheel.
24. The power tool of Claim 23, wherein the actuator includes a linear actuator and a cam that is engage the second one of the arm members, the linear actuator drawing the cam across the second one of the arm members to move the second one of the arm members in the second rotational direction.
25. The power tool of Claim 24, wherein a third one of the arm members is disposed between the first one of the arm members and the second one of the arm members, the third one of the arm members being pivotally coupled to the first one of the arm members at a first point, the third one of the arm members also being pivotally coupled to the second one of the arm members at a second point.
26. The power tool of Claim 25, wherein the second one of the arm members is pivotally coupled to the structure at the second point.
27. The power tool of Claim 25, wherein another spring biases the third one of the arm members about the second point in the second rotational direction.
28. The power tool of Claim 23, wherein the first one of the arm members comprises a pair of plate members and an axle that is disposed between the pair of plate members, the roller being mounted on the axle.
29. The power tool of Claim 28, wherein the axle is offset from the first pivot point.
-49B-
PCT/US2005/011075 2004-04-02 2005-04-01 Activation arm configuration for a power tool WO2005097441A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602005024938T DE602005024938D1 (en) 2004-04-02 2005-04-01 Activation arm configuration for a power tool
EP05734188A EP1729940B1 (en) 2004-04-02 2005-04-01 Activation arm configuration for a power tool
AT05734188T ATE489202T1 (en) 2004-04-02 2005-04-01 ACTIVATION ARM CONFIGURATION FOR A POWER POWERED TOOL

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US55934404P 2004-04-02 2004-04-02
US60/559,344 2004-04-02
US11/095,696 2005-03-31
US11/095,696 US7204403B2 (en) 2004-04-02 2005-03-31 Activation arm configuration for a power tool

Publications (3)

Publication Number Publication Date
WO2005097441A2 WO2005097441A2 (en) 2005-10-20
WO2005097441A3 WO2005097441A3 (en) 2007-01-11
WO2005097441B1 true WO2005097441B1 (en) 2007-02-01

Family

ID=35053191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/011075 WO2005097441A2 (en) 2004-04-02 2005-04-01 Activation arm configuration for a power tool

Country Status (5)

Country Link
US (1) US7204403B2 (en)
EP (1) EP1729940B1 (en)
AT (1) ATE489202T1 (en)
DE (1) DE602005024938D1 (en)
WO (1) WO2005097441A2 (en)

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Also Published As

Publication number Publication date
ATE489202T1 (en) 2010-12-15
WO2005097441A2 (en) 2005-10-20
EP1729940B1 (en) 2010-11-24
WO2005097441A3 (en) 2007-01-11
EP1729940A2 (en) 2006-12-13
DE602005024938D1 (en) 2011-01-05
US7204403B2 (en) 2007-04-17
EP1729940A4 (en) 2008-12-24
US20050218174A1 (en) 2005-10-06

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