US3853030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulation mechanism for harps
Assignee: Individual
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Filing: 1974-04-24
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Granted: 1974-12-10
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Expires: 1994-04-24
Abstract
Abstract An improved modulation mechanism disposed in the saddle of a harp and connected through angled hooks and sheet metal plates to lockable pedals, the operation of which so shortens the vibrating string length by contact of the angled hooks with the strings according to the laws of tempered tuning, that the tones of the tuned scale are raised by a semi-tone or a full tone, wherein each angled hook is pivoted into a position at which it bears on the string exactly opposite a pin defining the shortened string length.
Inventors
- 👤 K Petutschnigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
In a modulation mechanism disposed in the saddle of a harp and connected through angled hooks and sheet metal plates to lockable pedals, the operation of which shortens the vibrating string length by contact of the angled hooks on the strings according to the laws of tempered tuning, so that the tones of the tuned scale are raised by a semitone or a full tone, the improvement comprising: each angled hook is pivotally connected to said saddle at apposite with respect to the respective string, a pin fastened to said saddle and defining the shortened string length.
Claim 2
Dependent Claim
97 words
In a modulation mechanism disposed in the saddle of a harp and connected through angled hooks and sheet metal plates to lockable pedals, the operation of which shortens the vibrating string length by contact of the angled hooks on the strings according to the laws of tempered tuning, so that the tones of the tuned scale are raised by a semitone or a full tone, the improvement comprising: each angled hook is pivotally connected to said saddle at apposite with respect to the respective string, a pin fastened to said saddle and defining the shortened string length.
Claim 3
Dependent Claim
48 words
The improvement claimed in claim 1, wherein said pin comprises a pivotable angled hook pivotally connected to said saddle at a position oppsite the first angled hook, both angled hooks being mechanically coupled and pivotally by a common pedal is engaged, bearing on said string opposite each other.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |