Lockout apparatus for protecting an attachment device mounted on rotary power tools
First Claim
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1. A power hand tool comprising:
- an elongated housing with a nose portion having an opening concentric with a rotary output shaft of the hand tool, said nose portion being configured to have an accessory device mounted thereon;
a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on said nose portion and is configured to be moved by a user to engage said output shaft of the hand tool to prevent rotation thereof;
said shaft lock actuator being configured and positioned to contact a portion of an accessory device when the accessory device is mounted on said nose portion of said power tool, and disable said shaft lock actuator from engaging said output shaft.
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Abstract
A power hand tool comprising an elongated housing with a nose portion having an opening concentric with a rotary output shaft, the nose portion being configured to have an accessory device mounted thereon, a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on the nose portion and is configured to be moved by a user to engage the output shaft and prevent rotation thereof, the actuator being configured to be disabled from movement to engage the output shaft when an accessory device is mounted on the nose portion.
14 Citations
13 Claims
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1. A power hand tool comprising:
- an elongated housing with a nose portion having an opening concentric with a rotary output shaft of the hand tool, said nose portion being configured to have an accessory device mounted thereon;
a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on said nose portion and is configured to be moved by a user to engage said output shaft of the hand tool to prevent rotation thereof;
said shaft lock actuator being configured and positioned to contact a portion of an accessory device when the accessory device is mounted on said nose portion of said power tool, and disable said shaft lock actuator from engaging said output shaft. - View Dependent Claims (2, 3, 4, 5, 6)
- an elongated housing with a nose portion having an opening concentric with a rotary output shaft of the hand tool, said nose portion being configured to have an accessory device mounted thereon;
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7. A lockout device for a hand held power hand tool that has an elongated housing with a nose portion having an opening concentric with a rotary output shaft of the hand tool, with the nose portion being configured to have an accessory device mounted thereon, the hand tool having a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on the nose portion and configured to be moved by a user and cause the shaft lock actuator to engage said output shaft of the hand tool and prevent rotation thereof, said lockout device comprising:
said shaft lock actuator having a surface extending forwardly in a direction generally toward the output shaft and positioned to contact a portion of the accessory device when the accessory device is mounted on the hand tool and prevent said shaft lock actuator from engaging said output shaft and prevent rotation thereof. - View Dependent Claims (8, 9, 10)
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11. A method of protecting a flexible drive portion of a drive interconnection between an output shaft of a rotary power tool and an input shaft of an accessory device that also has an output shaft that is configured to be mounted on the power tool, wherein the power tool and the accessory device each have respective shaft lock mechanisms that are actuated by being moved into locking engagement by a user for preventing rotation of their respective output shafts, said method comprising:
providing an extension on the power tool shaft lock mechanism that is designed and configured to be in close proximity to the accessory device when the accessory device is mounted on the power tool, so that the extension prevents actuation of the power tool shaft lock mechanism. - View Dependent Claims (12, 13)
Specification