Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 6789601 | Screen door with child-accessible handle A sliding screen door for facilitating access through an entryway by a child includes a frame and a screen mounted to the frame. In addition, an adult height handle having a bottom edge is mounted on the frame at a first height from a floor adjacent the door, and a ... | 09/14/2004 |
| 6755004 | Simple lap beam Lap beam connectors for allowing two beams to be joined together without having to use external fasteners such as screws. Each beam has at least one internal pair of receptacles for slidably receiving each end of a plate therein. The plate can be secured to inner wa... | 06/29/2004 |
| 6619003 | Method of assembling a frame assembly for a partition system A method of assembling a frame assembly for a partition system is disclosed. The frame assembly includes a partition panel, a fabric covering the panel, and a frame component. The frame component automatically and evenly tensions the fabric about the pane... | 09/16/2003 |
| 6385941 | Simple lap beam Lap beam connectors for allowing two beams to be joined together without having to use external fasteners such as screws. Each beam has at least one internal pair of receptacles for slidably receiving each end of a plate therein. The plate can be secured ... | 05/14/2002 |
| 6070526 | Tensioning system for screen printing and method of tensioning A tensioning system for use in a retensionable frame used in silk screening wherein the fabric is precut and bordered with splines such that the appropriate tension is predetermined. A wrench including indicia to assure proper placement upon the tensionin... | 06/06/2000 |
| 6032433 | Multi-width canopy A fastening device for adjustably securing a flexible sheet comprising a first fastening component (62) having a recess (62a) formed therein. A portion of the flexible sheet is secured in the recess (62a) by cooperation of a second fastening component (61... | 03/07/2000 |
| 5002111 | Fabric locking device for roll-up awning A locking device is provided for anchoring the side edges of a roll-up awning to prevent wrinkles in the awning. The awning includes a hem which is positioned in a groove of a roll-up bar. The locking device comprises a body portion which is sized to be s... | 03/26/1991 |
| 4443126 | Water screening clamp strip A clamp strip is bolted to a frame member which may be one side or rail of the basket of a travelling water screen. The strip clamps a margin of the screening to the frame. The strip is of a durable non-metallic material of a high modulus of elasticity an... | 04/17/1984 |
| 4375295 | Detachable wheelchair backrest The commonplace laterally collapsible wheelchair is rendered more convenient and versatile by the addition thereto of several add-on attachments which can be readily installed by the purchaser of the chair at minimum cost and without structural alteration... | 03/01/1983 |
| 3987835 | Double cord edge fastener A fastener for attaching a flexible cover or sheet, such as a canvas tarpaulin, to a structure to provide a cover for the structure, and also to provide an acceptable weather seal around the cover. The device comprises a channel member fixed to the struct... | 10/26/1976 |
