Drum and head diaphragm adjustor for drum
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 8, 2005
Grant Date -
Jul 7, 2005
app pub date -
May 20, 2004
filing date -
Dec 24, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A head diaphragm adjustor for adjusting tension applied to upper and lower head diaphragms of a drum. A first bolt adjusts the tension applied to the upper head diaphragm. A second bolt adjusts the tension applied to the lower head diaphragm. A first meshed portion and a second meshed portion are respectively meshed with the first bolt and the second bolt and fixed to the shell. The upper portion of a rod is inserted in the first bolt in a manner independently rotatable relative to the first bolt. The lower portion of the rod is connected to the second bolt in a manner slidable relative to the second bolt and rotated integrally with the second bolt. The rod includes a cylindrical portion having a diameter greater than that of the upper portion of the rod. The first bolt abuts against the cylindrical portion.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2004 Application Filing Year
- G10D Class
- 158 Applications Filed
- 66 Patents Issued To-Date
- 41.78 % Issued To-Date
