Up-and-down driving device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 12, 2024
Grant Date -
Dec 2, 2021
app pub date -
May 24, 2021
filing date -
May 24, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An up-and-down driving device allows an up-and-down driving unit to move while supporting an object's load, in a support module in which the up-and-down driving unit is movably inserted into an inner space of a fixed housing. The up-and-down driving device includes: a driving means for moving the up-and-down driving unit in an up-and-down direction; a fixed-position compression spring main module including a fixed-position compression spring having one side fixed to a lower end of the housing and the other side supporting the up-and-down driving unit and mounted in a motion direction of the up-and-down driving unit; and a variable-position compression spring supplemental module including a variable-position compression spring having one side mounted rotatably to a side of the housing and the other side fastened rotatably to the up-and-down driving unit and configured to rotate while making a predetermined angle with the motion direction of the up-and-down driving unit.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2021 Application Filing Year
- B66F Class
- 477 Applications Filed
- 222 Patents Issued To-Date
- 46.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B66F Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 12, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 12, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 12, 2035 |
