Multi-head power tool with reverse lock-out capability
First Claim
Patent Images
1. A handheld power tool comprising:
- a handle;
a tool housing;
a rotary assembly located within the tool housing and capable of rotating a shaft in a forward and reverse direction;
a plate member having an opening located therein;
a detachable tool head couplable to the rotary assembly and the tool housing, the tool head having a contact plate capable of contacting the plate member; and
a retainer pin positioned within the opening of the plate member, the retainer pin coupled to a direction-selection switch;
wherein upon axial movement of the plate member by the contacting plate the opening in the plate member limits movement of the retainer pin and selection of an operating direction by the direction-selection switch.
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Accused Products
Abstract
A handheld power tool having a detachable tool head is disclosed in which, depending on the type of tool head used, selection of reverse movement of the rotary assembly of the power tool can be prevented. Where reverse movement of the tool head is undesirable, such as for a saw blade, the tool head contains a contact plate that slides a plate member to a position to prevent selection of the reverse direction by the user. However, where reverse movement of a tool head is desired, such as for a drill head, the plate member remains in its original position such that forward and reverse directions can be selected by a user.
554 Citations
20 Claims
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1. A handheld power tool comprising:
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a handle; a tool housing; a rotary assembly located within the tool housing and capable of rotating a shaft in a forward and reverse direction; a plate member having an opening located therein; a detachable tool head couplable to the rotary assembly and the tool housing, the tool head having a contact plate capable of contacting the plate member; and a retainer pin positioned within the opening of the plate member, the retainer pin coupled to a direction-selection switch; wherein upon axial movement of the plate member by the contacting plate the opening in the plate member limits movement of the retainer pin and selection of an operating direction by the direction-selection switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A handheld power tool comprising:
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a tool housing; a rotary assembly located within the tool housing and capable of rotating a shaft in a forward and reverse direction; a plate member located within the tool housing and having an opening therein; a detachable tool head coupled to at least the rotor assembly, the detachable tool head having a contact plate capable of contacting the plate member; and
,a retaining pin positioned within the opening of the plate member, the retaining pin coupled to a direction-selection switch; wherein the plate member is biased in a nominal position thereby allowing for lateral movement of the retaining pin for selection of the forward or reverse direction for the shaft. - View Dependent Claims (10, 11, 12)
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13. A handheld power tool comprising:
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a handle; a tool housing; a rotary assembly located within the tool housing and capable of rotating a shaft in a forward and reverse direction; a plate member for controlling rotation direction of the rotor assembly comprising; a planar member having a thickness; and an opening extending through the thickness and located within the planar member, the opening having; a first edge having a first length; a second edge opposite to the first edge and having a second length longer than the first length; a third edge extending between and connecting the first edge and the second edge; a plurality of fourth edges opposite to the third edge, one of the fourth edges connected to the first edge and another of the fourth edges connected to the second edge; a fifth edge extending between the fourth edges and oriented at an angle relative to the fourth edges; a detachable tool head coupleable to the rotary assembly and tool housing, the tool head having a contact plate capable of contacting the plate member; and a retainer pin positioned within the opening of the plate member, the retainer pin coupled to a direction-selection switch; wherein the plate member is capable of translating axially in order to limit directional rotation of the rotary assembly. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification