Patent US5056403A successfully refreshed from Google Patents.
US5056403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic drum with vibration isolating head
Assignee: Yamaha Corp
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Filing: 1990-05-15
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Granted: 1991-10-15
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Expires: 2010-05-15
Abstract
Abstract According to this invention, an electronic drum has a head portion. An annular frame is arranged to generally surround the head portion. A vibration plate is arranged to be in tight contact with a lower surface of the head portion, and vibrates in response to the performer's strike of the head portion. A pickup device is mounted on the vibration plate so as to detect the vibration of the vibration plate. A vibration preventing portion is inserted between the head portion and the annular frame so as to prevent the vibration from being transmitted to the annular frame. The head portion and the vibration preventing portion are integrally formed of a flexible material. A sound device is connected to the pickup device so as to produce a drum sound in response to the detected vibration.
Inventors
- 👤 Toshinori Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:59
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/02; G10D13/10; G10D13/26; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/146; G10H2230/00; G10H2230/045; G10H2230/251; G10H2230/275; G10H2230/301; Y; Y10; Y10S; Y10S84/00; Y10S84/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
159 words
An electronic drum comprising: a head portion to be struck by a performer; a pad cover integrated with said head portion and covering an upper portion of said electronic drum; an annular frame arranged to generally surround said head portion; a vibration plate arranged to be in tight contact with a lower surface of said head portion for vibrating spatially in response to said performer's strike of said head portion; a vibration preventing means provided between said head portion and said pad cover for preventing vibration of said vibration plate from being transmitted to said annular frame; a pickup device mounted on said vibration plate for detecting vibrations of said vibration plate; and a sound device connected to said pickup device for sounding in response to the detected vibration; said head portion and said cover being made of a flexible material to form a unitary piece; said pad cover being fitted over said frame to support said head portion.
Claim 2
Dependent Claim
159 words
An electronic drum comprising: a head portion to be struck by a performer; a pad cover integrated with said head portion and covering an upper portion of said electronic drum; an annular frame arranged to generally surround said head portion; a vibration plate arranged to be in tight contact with a lower surface of said head portion for vibrating spatially in response to said performer's strike of said head portion; a vibration preventing means provided between said head portion and said pad cover for preventing vibration of said vibration plate from being transmitted to said annular frame; a pickup device mounted on said vibration plate for detecting vibrations of said vibration plate; and a sound device connected to said pickup device for sounding in response to the detected vibration; said head portion and said cover being made of a flexible material to form a unitary piece; said pad cover being fitted over said frame to support said head portion.
Claim 3
Dependent Claim
15 words
An electronic drum according to claim 1, wherein said annular frame is made of metal.
Claim 4
Dependent Claim
19 words
An electronic drum according to claim 1, further comprising an instrument case to which said annular frame is fitted.
Claim 5
Dependent Claim
23 words
An electronic drum according to claim 1, further comprising a second pickup device connected to said annular frame, for detecting a rim shot.
Claim 6
Dependent Claim
28 words
An electronic drum according to claim 4, wherein said second pickup device is inserted through a cushion member and mounted to a holder connected to said annular frame.
Claim 7
Dependent Claim
147 words
An electric drum comprising; an instrument case having an upper opening; a pad cover formed of a flexible material covering an upper surface of said instrument case; said pad cover including a head portion to be struck by a performer and integrally formed with said head portion; an annular frame portion which surrounds said head portion, said pad cover extending to the outside of said frame; a thin boundary portion between said head portion and said annular frame portion for preventing vibration of said head portion from being transmitted to said annular frame portion; a vibration plate, mounted on a lower surface of said head portion for vibrating spatially in response to said performer's strike; a pickup device mounted on said vibration plate for detecting vibration of said vibration plate; and a sound device connected to said pickup device for sounding in response to the detected vibration.
Claim 8
Dependent Claim
147 words
An electric drum comprising; an instrument case having an upper opening; a pad cover formed of a flexible material covering an upper surface of said instrument case; said pad cover including a head portion to be struck by a performer and integrally formed with said head portion; an annular frame portion which surrounds said head portion, said pad cover extending to the outside of said frame; a thin boundary portion between said head portion and said annular frame portion for preventing vibration of said head portion from being transmitted to said annular frame portion; a vibration plate, mounted on a lower surface of said head portion for vibrating spatially in response to said performer's strike; a pickup device mounted on said vibration plate for detecting vibration of said vibration plate; and a sound device connected to said pickup device for sounding in response to the detected vibration.
Claim 9
Dependent Claim
29 words
An electronic drum according to claim 6, further comprising a frame which is arranged on a lower surface of said annular frame and is fixed to said instrument case.
Claim 10
Dependent Claim
34 words
An electronic drum according to claim 7, further comprising recesses which are formed on said lower surface of said annular surface, thereby reducing the contact area between said pad cover and said annular frame.
Claim 11
Dependent Claim
33 words
An electronic drum according to claim 6, further comprising second pickup device for detecting second vibration generated when said pad cover other than said head portion is struck thereby detecting a rim shot.
Claim 12
Dependent Claim
25 words
An electronic drum according to claim 6, wherein said head portion of said pad cover includes an annular rib adjacent to said thin boundary portion.
Claim 13
Dependent Claim
22 words
An electronic drum according to claim 9, wherein said pad cover includes a peripheral edge portion integrally formed with said head portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |