Punch tool device and method of supplying lubricating oil
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 6, 2017
Grant Date -
Feb 9, 2012
app pub date -
Apr 12, 2010
filing date -
Apr 15, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A punch tool device vertically that is movably mounted in a punch mounting hole formed in a punch holder of a punch press includes: a punch body vertically movably provided inside a tubular punch guide vertically movably mounted in a punch mounting hole and, the punch body includes a punch edge section in its lower end portion. An elastic member is provided between the punch guide and a punch head provided on an upper end portion of a punch driver provided above the punch body. A supported section is supported by a lifter spring provided to the punch holder, is provided on an outer peripheral surface of the punch guide; and a lubricating oil path is provided in the outer peripheral surface of the punch guide so as to communicate with a lubricating oil supply path formed in the punch body, the lubricating oil path provided to be capable of coming into and out of communication with a lifter spring containing hole which contains the lifter spring.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2010 Application Filing Year
- B21D Class
- 881 Applications Filed
- 453 Patents Issued To-Date
- 51.42 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- B21D Class
- 31.15 % 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 | Dec 6, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 6, 2028 |
