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 |
| 4295761 | Post tensionable grouted anchor assembly A resin or grout anchored rock or mine roof nut and anchor assembly including an elongated cylindrical anchor to be inserted in a bore hole in assembled relation with a nut after insertion of a destructible adhesive resin or grout containing cartridge. Th... | 10/20/1981 |
| 4132080 | Resin anchored rock or mine roof bolt anchor mechanism A resin anchored rock or mine roof bolt anchor assembly including an elongated cylindrical anchor member to be inserted in a bore hole in assembled relation with a bolt after insertion of a destructible adhesive-resin-containing cartridge. The anchor memb... | 01/02/1979 |
| 4100748 | Mine roof or rock bolt expansion anchor of the bail type A bail type expansion anchor for mine roofs and the like including a threaded bolt, and expander cone nut, and an expansible shell assembled together, with the shell formed from an integral blank of sheet metal having a pair of initially flat rectangular ... | 07/18/1978 |
