US3887101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker box cabinet and method of manufacturing the same
Assignee: Pioneer Corp
•
Filing: 1973-06-11
•
Granted: 1975-06-03
•
Expires: 1993-06-11
Abstract
Abstract A speaker box cabinet is formed of laminated sheet material wherein a thin outer flexible film is supported by a thick backing layer and the laminated sheet is bent at plural locations about thin lines defined by deep V-grooves which extend through the backing layer to the flexible film, and the cabinet is characterized by employing additional shallow grooves within the backing layer not reaching the film layer to correct for camber of the laminated sheet.
Inventors
- 👤 Hisao Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:03
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/021; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
In a speaker box cabinet or the like formed be bending a laminated sheet comprising a thin film outer layer bonded to a thick inner backing layer along spaced parallel deep bend grooves extending through the inner backing layer to the outer film layer, the improvement wherein: at least one shallow groove extends longitudinally of said laminated sheet within said inner layer to correct for camber of said sheet prior to forming said deep Bend grooves and bending the sheet at said deep grooves, with said deep bend grooves extending uniformly throughout their length, completely through said thick inner layer but not into said thin film outer layer.
Claim 2
Dependent Claim
108 words
In a speaker box cabinet or the like formed be bending a laminated sheet comprising a thin film outer layer bonded to a thick inner backing layer along spaced parallel deep bend grooves extending through the inner backing layer to the outer film layer, the improvement wherein: at least one shallow groove extends longitudinally of said laminated sheet within said inner layer to correct for camber of said sheet prior to forming said deep Bend grooves and bending the sheet at said deep grooves, with said deep bend grooves extending uniformly throughout their length, completely through said thick inner layer but not into said thin film outer layer.
Claim 3
Dependent Claim
108 words
In a speaker box cabinet or the like formed be bending a laminated sheet comprising a thin film outer layer bonded to a thick inner backing layer along spaced parallel deep bend grooves extending through the inner backing layer to the outer film layer, the improvement wherein: at least one shallow groove extends longitudinally of said laminated sheet within said inner layer to correct for camber of said sheet prior to forming said deep Bend grooves and bending the sheet at said deep grooves, with said deep bend grooves extending uniformly throughout their length, completely through said thick inner layer but not into said thin film outer layer.
Claim 4
Dependent Claim
108 words
In a speaker box cabinet or the like formed be bending a laminated sheet comprising a thin film outer layer bonded to a thick inner backing layer along spaced parallel deep bend grooves extending through the inner backing layer to the outer film layer, the improvement wherein: at least one shallow groove extends longitudinally of said laminated sheet within said inner layer to correct for camber of said sheet prior to forming said deep Bend grooves and bending the sheet at said deep grooves, with said deep bend grooves extending uniformly throughout their length, completely through said thick inner layer but not into said thin film outer layer.
Claim 5
Dependent Claim
30 words
The speaker box cabinet as claimed in claim 1, wherein said deep V-grooves are perpendicular to the longitudinal direction of said cabinet and to said at least one shallow groove.
Claim 6
Dependent Claim
31 words
The speaker box cabinet as claimed in claim 1, wherein said at least one shallow groove extends to a depth of from one-half to one-third the thickness of said backing layer.
References Cited (Backward Citations)
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US2157794A
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US2246660A
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US2240256A
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US3539425A
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US3437392A
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |