US3830638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacture of plates or shaped sheets having a base of mineral fibers, particularly glass fibers
Assignee: Certainteed LLC
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Filing: 1973-01-05
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Granted: 1974-08-20
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Expires: 1993-01-05
Abstract
Abstract The invention contemplates the homogeneous distribution of hard granules or particles throughout a mass of resin-coated mineral fibers to produce structural units in the form of sheets or slabs composed of the mass of mineral fibers in lattice-work form, particularly glass fibers, agglomerated with the dried and cured resin binder and having interspersed in the meshes of the mass, the separate hard and indeformable particles, either in solid form, such as sand, or in porous form, such as parlite or vermiculite, which render the structural units strongly resistant to physical deformation while enhancing the heat-insulating characteristics thereof.
Inventors
- 👤 C Jumentier
- 👤 A Bonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:06
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/02; B29C70/021; B29C70/025; B01; B01F; B01F25/00; B01F25/20; B01F25/23; B01F25/231; B01F25/70; B01F25/72; B01F25/721; C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C04B26/122
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
An apparatus as set forth in claim 1, wherein said first-mentioned annular means comprises an annular receptacle for the particles below said centrifuge, surrounding said annular curtain of fibers and provided with an adjustable outlet at the bottom of said receptacle, and adjacent to said annular blowing device for projecting the particles into said annular curtain of fibers.
Claim 2
Dependent Claim
26 words
An apparatus as set forth in claim 2, including an oscillating conduit between said receptacle and conveyor for depositing said curtain of fibers onto the latter.
Claim 3
Dependent Claim
22 words
An apparatus as set forth in claim 3, wherein said coating means is disposed below said oscillating conduit and above said conveyor.
Claim 4
Dependent Claim
111 words
An apparatus as set forth in claim 1, wherein said first-mentioned annular means comprises a. a distributor crown below said centrifuge and surrounding said annular curtain of fibers, b. an annular inclined wall on the interior of said crown having a slope at least as great as the ''''angle of repose'''' of the particles, c. means for feeding a plurality of streams of the particles onto said wall around the circumference thereof, which merge into a continuous sheet at the lower edge thereof, and d. said annular blowing device being disposed at the bottom of said distributor crown for blowing said continuous sheet of particles into said annular curtain of fibers.
Claim 5
Dependent Claim
50 words
An apparatus as set forth in claim 5, wherein said last-mentioned annular blowing device is provided with tangentially disposed inlets to impart a rotary movement to the annular sheet of particles in a direction opposite to the rotary movement of the annular curtain of fibers falling from the rotary centrifuge.
Claim 6
Dependent Claim
30 words
An apparatus as set forth in claim 5, including means for adjusting the feed of the plurality of streams to render them uniform around the circumference of said inclined wall.
Claim 7
Dependent Claim
77 words
An apparatus as set forth in claim 5, wherein said feeding means comprises a. a pair of conveyor tubes disposed above said distributor crown each provided with a plurality of openings along the lowermost portions thereof, b. means for supplying the hard particles to one end of each of said tubes, c. a screw conveyor in each tube, and d. conduits extending from each of said openings to spaced points around the circumference of said inclined wall.
Claim 8
Dependent Claim
45 words
An apparatus as set forth in claim 8, including adjustable masks provided with a plurality of apertures of different sizes adapted to selectively overlie each opening in said tubes to control the thickness of the streams of particles which are fed to said inclined wall.
Claim 9
Dependent Claim
29 words
An apparatus as set forth in claim 9, wherein each of said conveyor tubes is provided with relief openings at the end thereof remote from its end of supply.
Claim 10
Dependent Claim
61 words
An apparatus as set forth in claim 5, wherein said feeding means comprises a toroidal-shaped conveyor tube adjacent to said inclined wall, and provided with a plurality of openings therealong for discharging the plurality of streams of particles thereonto, a helical core-less conveyor in the interior of said tube, and means for supplying the hard particles connected to one end thereof.
Claim 11
Dependent Claim
30 words
An apparatus as set forth in claim 5, including an oscillating tuyers between said distributor crown and traveling conveyor for smoothly depositing said annular curtain of fibers on the latter.
References Cited (Backward Citations)
US1695123A
Cited
US1765026A
Cited
US2336946A
Cited
US2466906A
Cited
US2543251A
Cited
US3282667A
Cited
US3338996A
Cited
US3337669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |