US3886546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric horn
Assignee: Denso Corp
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Filing: 1973-04-13
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Granted: 1975-05-27
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Expires: 1993-04-13
Abstract
Abstract An electric horn is provided which comprises a vortical acoustic transformer having a sound inlet port, an electromagnetic vibrating mechanism disposed at a central portion of the transformer and having an armature, a diaphragm mounted, along with the armature, on the transformer so as to enclose the sound inlet port, and a vibrator fixed to the diaphragm at a position opposite to the transformer.
Inventors
- 👤 Mitsuru Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:15
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/12; G10K9/13; G10K9/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
An electric horn comprising a vortical acoustic transformer having a sound inlet port, an electromagnet fixedly secured on said transformer at the center thereof, means for energizing said electromagnet, interrupting means for interrupting the energizing current to said electromagnet, a movable armature disposed proximate said electromagnet, said armature being attracted to said electromagnet when energized by said energizing current, a diaphragm having a portion thereof fixedly secured to said transformer and having another portion thereof fixedly secured to said armature, said diaphragm being moved in accordance with the movement of said armature, said diaphragm enclosing the sound inlet port of said transformer, and a vibrator fixedly secured to said diaphragm and said armature on the side of said diaphragm opposite said transformer.
Claim 2
Dependent Claim
122 words
An electric horn comprising a vortical acoustic transformer having a sound inlet port, an electromagnet fixedly secured on said transformer at the center thereof, means for energizing said electromagnet, interrupting means for interrupting the energizing current to said electromagnet, a movable armature disposed proximate said electromagnet, said armature being attracted to said electromagnet when energized by said energizing current, a diaphragm having a portion thereof fixedly secured to said transformer and having another portion thereof fixedly secured to said armature, said diaphragm being moved in accordance with the movement of said armature, said diaphragm enclosing the sound inlet port of said transformer, and a vibrator fixedly secured to said diaphragm and said armature on the side of said diaphragm opposite said transformer.
Claim 3
Dependent Claim
45 words
The electric horn of claim 1 wherein said interrupter means includes at least one movable contact, said contact being separated from another stationary contact by the movement of said armature toward said electromagnet, said contacts being closed when said armature moves away from said electromagnet.
Claim 4
Dependent Claim
115 words
An electric horn comprising a vortical acoustic transformer having a sound inlet port proximate a central portion thereof, an electromagnet fixedly secured to the central portion of said transformer within said sound inlet port, a diaphragm fixedly secured to said transformer and extending over said sound inlet port, an armature fixedly secured to a central portion of said diaphragm and being positioned in proximity to and in reciprocating relationship with said electromagnet, said diaphragm and said armature enclosing said inlet port, means for energizing said electromagnet, an interrupter means for intermittently interrupting the energization of said electromagnet, and a Vibrator fixedly secured to said diaphragm on the side of said diaphragm opposite to said transformer.
Claim 5
Dependent Claim
115 words
An electric horn comprising a vortical acoustic transformer having a sound inlet port proximate a central portion thereof, an electromagnet fixedly secured to the central portion of said transformer within said sound inlet port, a diaphragm fixedly secured to said transformer and extending over said sound inlet port, an armature fixedly secured to a central portion of said diaphragm and being positioned in proximity to and in reciprocating relationship with said electromagnet, said diaphragm and said armature enclosing said inlet port, means for energizing said electromagnet, an interrupter means for intermittently interrupting the energization of said electromagnet, and a Vibrator fixedly secured to said diaphragm on the side of said diaphragm opposite to said transformer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |