US3561885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower housing
Assignee: Pyronics Inc
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Filing: 1969-08-11
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Granted: 1971-02-09
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Expires: 1989-08-11
Abstract
Abstract A RADIAL FLOW BLOWER HOUSING COMPRISING FLAT, RECTANGULAR SIDE PLATES POSITIONED ON OPPOSITE SIDES OF A SCROLL FORMING MEMBER. THE SCROLL FORMING MEMBER IS MADE FROM AN ELONGATED STRIP OF METAL CURVED INTO THE REQUIRED SHAPE. THE SIDE PLATES ARE CLAMPED TO THE SCROLL FORMING MEMBER BY TRANSVERSELY EXTENDING BOLTS OR STUDS WHICH ARE ARRANGED TO POSITION THE SCROLL FORMING MEMBER. ADDITIONALLY, THE EDGES OF THE SCROLL FORMING MEMBER ARE PROVIDED WITH RESILIENT, U-SHAPED GASKETS WHICH ENGAGE THE SIDE PLATES TO FORM AN AIRTIGHT SEAL.
Inventors
- 👤 Charles R Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:22
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |