Electromagnetically operated audible signal generator
US4040051A · kind A · utility
1Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1976 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Nov 4, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K9/13
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An audible signal generator comprises a coil, a pole piece, and an armature movably mounted with respect to the pole piece so that one end of the armature approaches the pole piece upon energization of the coil. The pole piece has a pair of spaced protrusions that extend toward the one end of the armature, and a cantilever spring member is supported on the pole piece so as to extend between the spaced protrusions. The one end of the armature has a protrusion that extends toward the pole piece and is located so as to engage the portion of the spring member in between the spaced protrusions of the pole piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.