Patent US3854844A successfully refreshed from Google Patents.
US3854844A
Expired / Lapsed
US
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Blower wheel
Assignee: Philips Industries Inc
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Filing: 1973-05-14
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Granted: 1974-12-17
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Expires: 1993-05-14
Abstract
Abstract An improved blower wheel is disclosed in which the end rings are formed from flat stock material which has been partially preformed by rolling and cut to the desired length. The center disks are stamped from sheet material which may be of a different gauge than that of the end rings and formed with peripheral notches and a U-shaped crimp to engage the inner section of each of the blades. The arrangement permits selection of center disk material without regard to end ring material, provides versatility in selecting blower wheel size and eliminates production inventory balance problems which occur when the center disk and end rings are stamped from the same material.
Inventors
- 👤 J Ranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:08
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; B; B21; B21D; B21D53/00; B21D53/26; B21D53/78
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A direct drive bladed blower wheel comprising a pair of rollformed sheet metal end rings formed of strip material, said end rings each having ends which are overlapped and welded to form a continuous ring, a series of generally axially aligned and peripherally spaced blades having ends supported on said end rings, a single sheet metal center drive disk received axially within said blades and having a series of peripheral tabs defining slots engaging and supporting each blade at a location axially spaced between said end rings, the gauge thickness of said drive disk being substantially greater than that of said end rings.
Claim 2
Dependent Claim
103 words
A direct drive bladed blower wheel comprising a pair of rollformed sheet metal end rings formed of strip material, said end rings each having ends which are overlapped and welded to form a continuous ring, a series of generally axially aligned and peripherally spaced blades having ends supported on said end rings, a single sheet metal center drive disk received axially within said blades and having a series of peripheral tabs defining slots engaging and supporting each blade at a location axially spaced between said end rings, the gauge thickness of said drive disk being substantially greater than that of said end rings.
Claim 3
Dependent Claim
54 words
The blower wheel of claim 1 further comprising means in said tabs at said disk slots defining a peripheral crimp having a V-shape at the region of tab engagement with said blades for increasing the area of contact of said disk with said blade and providing torsional stability of said disk in said wheel.
References Cited (Backward Citations)
US1657758A
Cited
US2209028A
Cited
US2392113A
Cited
US2673390A
Cited
US2915240A
Cited
US2952404A
Cited
US3335482A
Cited
US3262637A
Cited
US3737966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |