Weldless building structures
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 24, 2017
Issued Date -
N/A
app pub date -
Jan 5, 2016
filing date -
Feb 19, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A building structure including a first building member and a second building member may be connected by a plurality of fasteners, each fastener having a head, a threaded portion having a through hardness of between HRB 70 and HRC 40, a thread-forming portion of at least HRC 50 hardness enabling the fastener to form threads in at least the second steel building member, and a fluted lead portion of at least HRC 50 hardness with a nominal diameter between 70 and 95% of major diameter, such that the fastener is capable of providing a ratio of strip torque to thread-forming torque of at least 3.0 and a ratio of strip torque to drive torque greater than 6.0 when the second steel building member having a thickness of 0.25 inch and the fluted lead portion having at least one diameter within nominal diameter between 80 and 98% of major diameter.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F16B Class
- 27.32 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 24, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 24, 2029 |
