Spot weld removing tool
OwnerTony Parroneinventor
Life of this patent
Estimating the term…
Abstract
An improved bit-like device for proper removal of spot weld interconnections of upper and lower flat members, such as in sheet metal operations. The device includes an outer member sleeved over a bit shank, rotational and slidable connection structure between the outer member and the shank, a spring biasing the outer member to a non-work position, and stop members, preferably adjustable, to limit the relative axial movement of the outer member with respect to the shank and thereby limit the depth of metal removal.
Claims19
In a device for removing spot weld interconnections of upper and lower flat members of the type including a bit, with a working end and a shank attachable at an opposite end to a roatary drive, and means to control the depth of movement of the working end, the improvement comprising:
- an outer member sleeved over the shank and extending from a proximal end spaced from the shank opposite end to a distal end, the outer member axially movable with respect to the shank between a first position in which the distal end is beyond the working end and a second position in which the working end is beyond the distal end;
- connecting means rotationally and slidably joining the outer member to the shank, said connecting means located axially between the proximal and distal ends of the outer member and being radially inside of the outer member such that the outer member substantially covers the connecting means;
- means biasing the outer member to the first position;
- and
- means limiting the relative axial movement of the outer member extending radially from the outer member to set the second position,
- whereby spot weld interconnections can quickly and accurately be removed while preserving the lower member.
In a device for removing spot weld interconnections of upper and lower flat members of the type including a bit, with a working end and a shank attachable at an opposite end to a rotary drive, and means to control the depth of movement of the working end, the improvement comprising:
- an outer member sleeved over the shank and extending from a proximal end spaced from the shank opposite end to a distal end, the outer member axially movable with respect to the shank between a first position in which the distal end is beyond the working end and a second position in which the working end is beyond the distal end;
- connecting means rotationally and slidably joining the outer member to the shank, the connecting means including a pair of axially spaced annular rotational bearings around the shank and having outer portions which are non-rotational with respect to the outer member, one of the bearings axially fixed with respect to the shank and the other bearing axially fixed with respect to the outer member;
- means biasing the outer member to the first position;
- and
- means limiting the relative axial movement of the outer member extending radially from the outer member to set the second position,
- whereby spot weld interconnections can quickly and accurately be removed while preserving the lower member.
In a device for removing spot weld interconnections of upper and lower flat members of the type including a bit, with a working end and a shank attachable at an opposite end to a rotary drive, and means to control the depth of movement of the working end, the improvement comprising:
- an outer member sleeved over the shank and extending from a proximal end spaced from the shank opposite end to a distal end, the outer member axially movable with respect to the shank between a first position in which the distal end is beyond the working end and a second position in which the working end is beyond the distal end;
- connecting means rotationally and slidably joining the outer member to the shank, said connecting means including an inner member non-rotationally and slidably sleeved within the outer member and axially fixed with respect to the shank, said inner member providing a slide bearing for the outer member;
- means biasing the outer member to the first position;
- and
- means limiting the relative axial movement of the outer member extending radially from the outer member to set the second position,
- whereby spot weld interconnections can quickly and accurately be removed while preserving the lower member.
In a device for removing spot weld interconnections of upper and lower flat members of the type including a bit, with a working end and a shank attachable at an opposite end to a rotary drive, and means to control the depth of movement of the working end, the improvement comprising:
- an outer member sleeved over the shank and extending from a proximal end spaced from the shank opposite end to a distal end, the outer member axially movable with respect to the shank between a first position in which the distal end is beyond the working end and a second position in which the working end is beyond the distal end;
- connecting means rotationally and slidably joining the outer member to the shank, the connecting means including a pair of axially spaced annular rotational bearings around and in contact with the shank and having outer portions which are non-rotational with respect to the outer member, at least one of the rotational bearings being a ball bearing, whereby the bit may rotate freely while the outer member is rotationally fixed;
- means biasing the outer member to the first position;
- and
- means limiting the relative axial movement of the outer member extending radially from the outer member to set the second position,
- whereby spot weld interconnections can quickly and accurately be removed while preserving the lower member.
Dependencies are inferred from the claim text.