FIELD: physics.
SUBSTANCE: drum includes a hollow crimp cylindrical resonator case fixed on a stand, with one of the supporting shell rings is movable. The shell ring has orifices for air circulation, is spring-loaded and connected by a cable to a pedal. One end of the spring is attached to the upper part of the stand, and another end is attached to a ring. The ring moves freely along the stand and is connected to the movable shell ring.
EFFECT: extended functional capabilities of the article.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DRUM | 2019 |
|
RU2693964C1 |
| ANTENNA | 2009 |
|
RU2407116C1 |
| SYRINGE | 2008 |
|
RU2388497C1 |
| FAST SUBMERSIBLE | 2007 |
|
RU2349488C2 |
| FLYING BELT | 2009 |
|
RU2401772C1 |
| AIRSHIP | 2015 |
|
RU2580385C1 |
| HABITABLE SUBMERSIBLE CHAMBER | 2006 |
|
RU2301760C1 |
| AIRCRAFT BODY | 2015 |
|
RU2609617C1 |
| DEVICE FOR DETERMINATION OF IMPACT RESISTANCE OF MATERIAL | 2014 |
|
RU2578249C1 |
| HELICOPTER | 2015 |
|
RU2583411C1 |
