Patent US3720787A successfully refreshed from Google Patents.
US3720787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omni-directional globular speaker system
Assignee: Victor Company of Japan Ltd
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Filing: 1971-03-24
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Granted: 1973-03-13
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Expires: 1991-03-24
Abstract
Abstract An omni-directional globular speaker system employs a substantially globular speaker baffle, a plurality of speakers attached to an entire peripheral surface of the speaker baffle, and means for variably adjusting the audio output of a preferred speaker out of a plurality of speakers. The directivity characteristic of the globular speaker system is omni-directional and of a spherical form when the adjusting means is not yet variably adjusted. The variable adjusting means adjusts the directivity characteristic so that the speaker system will have a specified directivity characteristic of a non-spherical form.
Inventors
- 👤 Y Ishii
- 👤 M Hayashi
- 👤 S Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/32; H04R1/40; H04R1/02; H04R1/22; H04R1/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
262 words
An omni-directional globular speaker system comprising: two semi-globular complementary baffel shells, each of said semiglobulaR shells having a folded flange formed at a peripheral edge thereof and provided with a plurality of apertures for sound speakers which open to the peripheral surface of each said semiglobular baffle shells, said two semi-globular baffel shells abutting at said peripheral edges thereof and forming a compete globular baffle assembly, said peripheral edges of the semiglobular baffle shells being provided with projections and mating recesses so that the projections and recesses of one of the semiglobular baffle shells complementarily fit into respective recesses and projections of the other semi-globular baffle shells; two semi-globular cover members perforated with apertures for sound transmission and respectively disposed substantially concentrically covering said semi-globular baffle shells, each said semi-globular cover having a curved edge which is inserted into a groove formed between the folded flange and the semiglobular baffle shells; and jointing means passing through the top of said semi-globular baffle shells and said semi-globular cover members, said joining means including a connecting rod extending within the globular baffle assembly and having grooved portions at ends thereof, a cap nut being screwed with one of the screwed end portions of the connecting rod through the top of one of the semi-globular baffle shells and one of the semi-globular covers, a joint member screwed with the other screwed end portion of the connecting rod through the tops of the other semi-globular baffle shells and the other semi-globular cover, and a nut screwed with the joint member for fastening the globular baffle assembly.
Claim 2
Dependent Claim
262 words
An omni-directional globular speaker system comprising: two semi-globular complementary baffel shells, each of said semiglobulaR shells having a folded flange formed at a peripheral edge thereof and provided with a plurality of apertures for sound speakers which open to the peripheral surface of each said semiglobular baffle shells, said two semi-globular baffel shells abutting at said peripheral edges thereof and forming a compete globular baffle assembly, said peripheral edges of the semiglobular baffle shells being provided with projections and mating recesses so that the projections and recesses of one of the semiglobular baffle shells complementarily fit into respective recesses and projections of the other semi-globular baffle shells; two semi-globular cover members perforated with apertures for sound transmission and respectively disposed substantially concentrically covering said semi-globular baffle shells, each said semi-globular cover having a curved edge which is inserted into a groove formed between the folded flange and the semiglobular baffle shells; and jointing means passing through the top of said semi-globular baffle shells and said semi-globular cover members, said joining means including a connecting rod extending within the globular baffle assembly and having grooved portions at ends thereof, a cap nut being screwed with one of the screwed end portions of the connecting rod through the top of one of the semi-globular baffle shells and one of the semi-globular covers, a joint member screwed with the other screwed end portion of the connecting rod through the tops of the other semi-globular baffle shells and the other semi-globular cover, and a nut screwed with the joint member for fastening the globular baffle assembly.
Claim 3
Dependent Claim
262 words
An omni-directional globular speaker system comprising: two semi-globular complementary baffel shells, each of said semi-globulaR shells having a folded flange formed at a peripheral edge thereof and provided with a plurality of apertures for sound speakers which open to the peripheral surface of each said semi-globular baffle shells, said two semi-globular baffel shells abutting at said peripheral edges thereof and forming a compete globular baffle assembly, said peripheral edges of the semi-globular baffle shells being provided with projections and mating recesses so that the projections and recesses of one of the semi-globular baffle shells complementarily fit into respective recesses and projections of the other semi-globular baffle shells; two semi-globular cover members perforated with apertures for sound transmission and respectively disposed substantially concentrically covering said semi-globular baffle shells, each said semi-globular cover having a curved edge which is inserted into a groove formed between the folded flange and the semi-globular baffle shells; and jointing means passing through the top of said semi-globular baffle shells and said semi-globular cover members, said joining means including a connecting rod extending within the globular baffle assembly and having grooved portions at ends thereof, a cap nut being screwed with one of the screwed end portions of the connecting rod through the top of one of the semi-globular baffle shells and one of the semi-globular covers, a joint member screwed with the other screwed end portion of the connecting rod through the tops of the other semi-globular baffle shells and the other semi-globular cover, and a nut screwed with the joint member for fastening the globular baffle assembly.
Claim 4
Dependent Claim
262 words
An omni-directional globular speaker system comprising: two semi-globular complementary baffel shells, each of said semi-globulaR shells having a folded flange formed at a peripheral edge thereof and provided with a plurality of apertures for sound speakers which open to the peripheral surface of each said semi-globular baffle shells, said two semi-globular baffel shells abutting at said peripheral edges thereof and forming a compete globular baffle assembly, said peripheral edges of the semi-globular baffle shells being provided with projections and mating recesses so that the projections and recesses of one of the semi-globular baffle shells complementarily fit into respective recesses and projections of the other semi-globular baffle shells; two semi-globular cover members perforated with apertures for sound transmission and respectively disposed substantially concentrically covering said semi-globular baffle shells, each said semi-globular cover having a curved edge which is inserted into a groove formed between the folded flange and the semi-globular baffle shells; and jointing means passing through the top of said semi-globular baffle shells and said semi-globular cover members, said joining means including a connecting rod extending within the globular baffle assembly and having grooved portions at ends thereof, a cap nut being screwed with one of the screwed end portions of the connecting rod through the top of one of the semi-globular baffle shells and one of the semi-globular covers, a joint member screwed with the other screwed end portion of the connecting rod through the tops of the other semi-globular baffle shells and the other semi-globular cover, and a nut screwed with the joint member for fastening the globular baffle assembly.
Claim 5
Dependent Claim
32 words
The omni-directional globular speaker system as claimed in claim 1, wherein said joint member is provided with an opening in the form of a passage to draw out wires from the speakers.
Claim 6
Dependent Claim
66 words
The omni-directional globular speaker system as claimed in claim 1 wherein said plurality of speakers comprises a plurality of woofers and a plurality of tweeters, said plurality of woofers and tweeters being respectively disposed on said globular baffle assembly in such locations that each woofer and each tweeter is disposed adjoining each other at smaller interval than intervals between adjacent woofers and intervals between adjacent tweeters.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |