Device and method for holding a tool bit

• US 9,517,548 B2
• Filed: 11/19/2012
• Issued: 12/13/2016
• Est. Priority Date: 02/26/2008
• Status: Active Grant

• Current Assignee: Sjoerd Anne Van Valkenburg
• Original Assignee: Sjoerd Anne Van Valkenburg
• Inventors: Van Valkenburg, Sjoerd Anne
• Primary Examiner(s): Grant, Alvin
• Application Number:
  US13/680,372
• Publication Number:
  US 20130219692A1
• Time in Patent Office: 1,485 Days
• Field of Search: 269/310
• US Class Current: 1/1
• CPC Class Codes: B23C 2210/244 Milling cutters comprised of disc-shaped modules or multiple disc-like cutters
• CPC Class Codes: B23C 2260/08 Bearings
• CPC Class Codes: B23C 5/10 Shank-type cutters, i.e. with an integral shaft
• CPC Class Codes: B25B 11/00 Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders for holding or positioning work for welding, soldering, or cutting by applying heat locally B23K37/04; specially adapted to machine tools B23Q3/00
• CPC Class Codes: B25B 5/006 Supporting devices for clamps
• CPC Class Codes: B25B 5/04 with pivoted jaws
• CPC Class Codes: B25B 5/103 with a hinge
• CPC Class Codes: B25B 9/02 without sliding or pivotal connections, e.g. tweezers, onepiece tongs
• CPC Class Codes: Y10T 279/17145 Ball or roller
• CPC Class Codes: Y10T 29/49815 Disassembling
• CPC Class Codes: Y10T 29/49822 by applying force
• CPC Class Codes: Y10T 29/49824 to elastically deform work part or connector
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49998 Work holding
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble
• CPC Class Codes: Y10T 29/53961 with work-holder for assembly
• CPC Class Codes: Y10T 408/95 with tool-retaining means
• CPC Class Codes: Y10T 408/953 Clamping jaws

Abstract

A device and method for holding a bit for a tool. The holding device, which is secured to a support surface, includes a housing having a base, a first leg and a second leg. A slot is defined between the first and second legs and the shank of the bit is received through one of a plurality of differently dimensioned apertures defined along the slot between the first and second legs. An adjustment assembly is engaged with the first and second legs and is movable to a first position to clamp the shank in the selected aperture; and is movable to a second position to release the shank. When the adjustment assembly is moved from the second position to the first position, a free end of the second leg bends toward the first leg, thereby reducing the diameter of the aperture within which the shank is received.

Claims

1. A device for holding a bit for a tool comprising:

a housing including;

a base adapted to be secured to a support surface;

a first leg and a second leg extending outwardly from the base in generally a same direction;

a slot defined between the first and second legs, wherein a region of the slot is adapted to receive a portion of a shank of the bit therethrough, said slot having a width;

an adjustment assembly engageable with the first and second legs and being movable between a first position and a second position;

wherein movement of the adjustment assembly from the second position to the first position causes a portion of the second leg to move toward the first leg, thereby reducing the width of the region of the slot; and

movement of the adjustment assembly from the first position to the second position causes the portion of the second leg to move away from the first leg, thereby increasing the width of the region of the slot;

wherein the second leg is disposed substantially parallel to the first leg when the adjustment assembly is in the second position; and

the second leg is disposed at an angle relative to the first leg when the adjustment assembly is in the first position; and

when the adjustment assembly is in the first position the shank of the bit is clamped in the region of the slot, and when the adjustment assembly is in the second position, the shank is not clamped in the region of the slot.

2. The holding device as defined in claim 1, wherein the portion of the second leg bends toward the first leg when the adjustment assembly is moved from the second position to the first position.

3. The holding device as defined in claim 1, wherein the slot is bounded by an interior surface of the first leg and an opposed interior surface of the second leg;

and the region of the slot adapted to receive the portion of the shank therein includes;

a first curved recess defined in the interior surface of the first leg; and

a second curved recess defined in the interior surface of the second leg opposite the first curved recess;

said first and second curved recesses and the width of the slot therebetween defining a first aperture in the housing, and the first aperture is adapted to selectively receive the portion of the shank therein.

4. The holding device as defined in claim 3, wherein the first aperture is of a first diameter that approximates a diameter of the shank of the bit when the adjustment assembly is in the first position;

and the first aperture is of a second diameter that is larger than the shank of the bit when the adjustment assembly is in the second position.

5. The holding device as defined in claim 3, wherein the first aperture extends from an upper surface of the housing to a lower surface of the housing and is oriented at right angles to the lower surface of the housing.

6. The holding device as defined in claim 1, wherein the adjustment assembly engages a free end of the first leg and a free end of the second leg.

7. The holding device as defined in claim 6, wherein the first and second legs extend longitudinally outwardly from the base;

and movement of the adjustment assembly from the second position to the first position causes the free end of the second leg to move laterally toward the free end of the first leg.

8. The holding device as defined in claim 1, further comprising:

a first aperture defined in the base region and extending between an upper and lower surface of the housing;

a second aperture defined in a free end of the first leg and extending between the upper and lower surfaces of the housing; and

a pair of fasteners, each fastener being received through one of the first and second apertures and adapted to fixedly secure the housing to the support surface.

9. A device for holding a bit for a tool comprising:

a housing including;

a base adapted to be secured to a support surface;

a first leg and a second leg extending outwardly from the base in generally a same direction;

a slot defined between the first and second legs and wherein a region of the slot is adapted to receive a portion of a shank of the bit therethrough, said slot having a width;

an adjustment assembly engageable with the first and second legs and being movable between a first position and a second position; and

when the adjustment assembly is in the first position the shank of the bit is clamped in the region of the slot, and when the adjustment assembly is in the second position, the shank is not clamped in the region of the slot;

wherein the slot is bounded by an interior surface of the first leg and an opposed interior surface of the second leg; and

the region of the slot adapted to receive the portion of the shank therein includes;

a first curved recess defined in the interior surface of the first leg;

a second curved recess defined in the interior surface of the second leg opposite the first curved recess;

said first and second curved recesses and the width of the slot therebetween defining a first aperture in the housing;

a third curved recess defined in the interior surface of the first leg adjacent the first curved recess; and

a fourth curved recess defined in the interior surface of the second leg opposite the third curved recess and adjacent the second curved recess;

wherein said third and fourth curved recesses and the width of the slot therebetween define a second aperture in the housing; and

wherein the housing is adapted to receive the shank of a bit in one or the other of the first and second apertures.

10. The holding device as defined in claim 9, wherein the first aperture is of a first diameter and the second aperture is of a second diameter, and the first diameter is greater than the second diameter.

11. The holding device as defined in claim 10, wherein the adjustment assembly is adjustable to reduce either of the first and second diameters to approximate a diameter of the shank of the bit when the adjustment assembly is moved from the second position to the first position.

12. The holding device as defined in claim 9, wherein both of the first and second apertures extend from an upper surface of the housing to a lower surface of the housing and are oriented at right angles to the lower surface of the housing.

13. The holding device as defined in claim 9, wherein the first diameter is of a size measurable in imperial units and the second diameter is of a size measurable in metric units or vice versa.

14. The holding device as defined in claim 9, wherein the base, the first leg and the second leg are all disposed in a same plane.

15. A device for holding a bit for a tool comprising:

a housing including;

a base adapted to be secured to a support surface;

a first leg and a second leg;

a first end of each of the first and second legs originating in and being integrally formed with the base;

wherein said first and second legs extend longitudinally outwardly from the base in generally a same direction and each of the first and second legs terminates in a free end that is remote from the base;

a slot defined between an interior surface of the first leg and an interior surface of the second leg;

said slot extending from the first ends to the free ends of the first and second legs; and

wherein a region of the slot is adapted to receive a portion of a shank of the bit therethrough; and

an adjustment assembly is engageable with the free ends and is movable between a first position and a second position;

wherein movement from the second position to the first position causes the free end of the second leg to move laterally toward the free end of the first leg; and

movement of the adjustment assembly from the first position to the second position causes the free end of the second leg to move laterally away from the free end of the first leg; and

wherein a width of the slot between the first ends is of a substantially constant size when the adjustment assembly is moved between the first and second positions.

16. The holding device as defined in claim 15, wherein the width of the slot between the free ends of the first and second legs changes when the adjustment assembly is moved between the first and second positions.

17. The holding device as defined in claim 15, wherein the adjustment assembly comprises a fastener which extends between the first and second legs;

and the fastener is rotatable in a first direction to draw the portion of the second leg toward the first leg; and

the fastener is rotatable in a second direction to allow the portion of the second leg to move away from the first leg.

18. The holding device as defined in claim 17, wherein a free end of the first leg defines a first hole therethrough, and a free end of the second leg defines a second hole therethrough;

and the first and second holes are substantially laterally aligned with each other; and

wherein the fastener is received through the first and second holes.

19. The holding device as defined in claim 18, wherein a terminal region of the fastener is externally threaded and an interior surface of the free end of the first leg which defines the first hole is internally threaded;

and the threaded terminal region of the fastener threadably engages in the threaded first hole.

20. The holding device as defined in claim 15, wherein the base, the first leg and the second leg are all disposed in a same plane.

21. A method of holding a router bit;

said method comprising the steps of;

providing a holding device for holding the router bit where the device comprises a housing comprised of a base, a first leg and a second leg extending outwardly from the base generally parallel to each other;

a slot defined between an interior surface of the first leg and an interior surface of the second leg;

said slot having a width;

an adjustment assembly engageable with the first and second legs and being movable between a first position and a second position; and

at least one aperture defined in the holding device by the first and second legs and a region of the slot;

said at least one aperture extending between an upper surface and a lower surface of the first and second legs;

positioning the lower surface of the first and second legs on a support surface;

securing the holding device to the support surface;

inserting a shank of the router bit into the at least one aperture defined in the holding device;

moving the adjustment assembly from the second position to the first position;

moving a free end of the second leg of the holding device from a position where the first and second legs are generally parallel toward a free end of the first leg of the holding device using the adjustment assembly to a position where the second leg is disposed at an angle relative to the first leg; and

clamping the shank in the at least one aperture.

22. The method as defined in claim 21, further comprising holding a first end of the second leg substantially stationary with respect to a first end of the first leg while moving the free end of the second leg toward or away from the free end of the first leg.

23. The method as defined in claim 21, wherein the step of moving the free end of the second leg includes moving the free end of the second leg laterally toward the free end of the first leg.

24. The method as defined in claim 23 wherein the step of securing the holding device to the support surface includes securing the first leg to the support surface prior to moving the second leg toward the first leg.

25. The method as defined in claim 21, wherein the step of moving the free end of the second leg toward the free end of the first leg includes bending the second leg out of parallel arrangement with respect to the first leg.

26. The method as defined in claim 21, wherein the step of moving the adjustment assembly from the second position to the first position includes the step of:

rotating a fastener which extends between the free ends of the first and second legs in a first direction; and

reducing the diameter of the at least one aperture to a diameter that is substantially complementary to an exterior diameter of the shank of the bit.