EP 0177745 A3 19870909 - DEVICE FOR REDUCING VIBRATIONS IN PERISCOPES OR THE LIKE
Title (en)
DEVICE FOR REDUCING VIBRATIONS IN PERISCOPES OR THE LIKE
Publication
Application
Priority
DE 3433397 A 19840912
Abstract (en)
[origin: US4640216A] The invention relates to an apparatus for damping vibrational deflections of periscopes or other vessel devices, which periscopes or other vessel devices extend into an aqueous medium when in use. Particular uses for the damping apparatus include application to periscopes, antennas and the like, for submarines. The damping apparatus preferably comprises a damping mass suitably mounted on a periscope or other extended-in-use device by damping elements. The damping elements may include, for example, elastic springy elements having a high internal friction, friction dampers, and coil springs which dissipate vibrational energy. The damping mass moves in response to vibrations of the damped device, thereby functioning as a kinetic energy storing device. The damping elements interact with the movement of the damping mass and thereby function as potential energy storing means. The damping apparatus damps the vibrational deflections of the device, which extends into the aqueous medium during movement of a vessel therethrough, thereby improving the performance of the extending device.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Citation (search report)
- US 3804210 A 19740416 - ERICKSON A
- US 1175609 A 19160314 - COTTRELL JAMES C [US]
- DE 2317840 A1 19741024 - GABLER ING KONTOR LUEBECK
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0177745 A2 19860416; EP 0177745 A3 19870909; EP 0177745 B1 19900502; AU 578366 B2 19881020; AU 5833986 A 19871210; DE 3433397 A1 19860320; DE 3433397 C2 19870226; DE 3577425 D1 19900607; US 4640216 A 19870203
DOCDB simple family (application)
EP 85111048 A 19850902; AU 5833986 A 19860604; DE 3433397 A 19840912; DE 3577425 T 19850902; US 70439185 A 19850222