Screw pair and co-rotating intermeshing twin-screw extruder provided with screw pair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 22, 2016
Grant Date -
Jan 29, 2015
app pub date -
Feb 28, 2013
filing date -
Mar 1, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A screw pair includes first and second screws having an outer circumferential surface on which a groove is spirally formed, and transports a raw material in a first direction along each of axis centers. An inner surface of the groove of each of the screws includes a first surface, which faces in the first direction, and in which the outer circumferential surfaces of the screws are formed to coincide with each other without a gap therebetween in the state where the screws mesh with each other, and a second surface, which faces in a second direction opposite to the first direction, and which forms a gap between the outer circumferential surfaces of the screws in the state where the screws mesh with each other.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- B29C Class
- 3653 Applications Filed
- 3211 Patents Issued To-Date
- 87.91 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B29C Class
- 0 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 22, 2028 |
