| SIMPSON STRONG-TIE COMPANY, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20090173019 | ROTATING CONCENTRIC HOLDOWN - A connection between a wall stud or post and an anchor bolt embedded in a concrete foundation, using a holdown connector that attaches to the anchor bolt and supports the wall stud or post above it. The holdown connector has a tapered bottom that allows it to rotate laterally, allowing the connection to act more purely in tension than is possible with a rigid connection. | 07-09-2009 |
| 20080273939 | Variably Threaded Screw - A variably threaded screw has a first end and a second end, the first end of the shaft terminating in a tip and the second end having a widened head thereon. A first helical thread portion is located on the shaft adjacent the widened head. A second helical thread portion is located on the shaft adjacent the tip of the shaft. A third helical thread portion is located on the shaft between the first helical thread portion and the second helical thread portion. The first helical thread portion and the second helical thread portion have right hand thread pitches. The third helical thread portion has a left hand thread pitch. A helical ridge having a right hand thread pitch intersects the third helical thread portion. | 11-06-2008 |
| 20080209845 | QUADRUPLE MONO TRUSS CONNECTION - An improved connector and connection formed with a seat member that is stiffened by first and second reinforcing flanges and first, second and third back wall members. When used as a hanger, the connector includes a seat member, first, second and third backwall members which are connected to a supporting girder and first and second side members are connected to the seat member. First, second, third and fourth flange arms integrally connected to the third back wall member are connected to up to four supported wood trusses or supported wood framing members which rest on the seat member. | 09-04-2008 |
