Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7137420 | Mortiser tool A mortiser tool comprises a drill bit, a cutting element mounted around the drill bit and a motor means. In use a motor rotates the drill bit independently of the cutting element, and in use a motor moves the drill bit in a first reciprocating action, in which the c... | 11/21/2006 |
| 6401772 | System and method for forming dovetail joints An apparatus for cutting dovetail joints comprises one or more trapezoidal mortising chisels mountable on a drill press, each trapezoidal mortising chisel having a trapezoidal cross sectional shape with a particular slope or "pitch" on its non-parallel si... | 06/11/2002 |
| 5595226 | Drilling/cutting machine for making joints in wooden members A drilling/cutting machine for forming joints for accommodating metal protrusions of a metal plate connector. The machine can cut one or more joints simultaneously with a drilling/cutting bit that drills and simultaneously cuts smaller and larger width sl... | 01/21/1997 |
| 5000628 | One step square hole drill bit A new square hole cutter is designed so as to be as compact as possible with minimal clearance space between each individual component. The rotating cutting gears are one piece items that attach to a central hub. The drive shaft and central drive gear are... | 03/19/1991 |
| 4137003 | Drill jig A drill jig for producing a rectangular mortise in the flat surface of a workpiece requiring only a portable drill and drill bit. The rectangular slot is intended to snugly house a standard square or hex nut so as to keep it from turning in either directi... | 01/30/1979 |
