Folding device for simultaneous formation of a plurality of corrugations in a metal sheet and method for use of said device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 23, 2020
Grant Date -
Sep 7, 2017
app pub date -
May 15, 2015
filing date -
Sep 2, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a bending device for forming corrugations in a metal sheet including:
- a lower frame; an upper frame able to move vertically between a rest position and a bending position;at least two dies, carried by the lower frame; one being fixed with respect to the lower frame and the other mounted with the ability to slide;at least two punches carried by the upper frame; one being fixed and the other being mounted with the ability to slide on the upper frame;the bending device being designed so that, in operation, as the upper frame moves towards its bending position, the metal sheet transmits a pulling force to the sliding punch and to the sliding die which force moves them from a spaced-apart position toward a close-together position.
First Claim
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International Classification(s)
- 2015 Application Filing Year
- B21D Class
- 769 Applications Filed
- 568 Patents Issued To-Date
- 73.87 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B21D Class
- 64.28 % this patent is cited more than
- 5 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 | Dec 23, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 23, 2031 |
