US3622249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan assembly
Assignee: Aisin Corp
•
Filing: 1969-08-13
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Granted: 1971-11-23
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Expires: 1989-08-13
Abstract
Abstract A fan assembly comprises a hub portion and blades made entirely of plastic material, the hub being secured to a driving member by means of bolts which pass through bolt holes in the hub. A bush inserted in each bolt hole is provided with an outwardly extending flange on each end thereof, one of which acts as a washer to separate the hub portion of the fan assembly from the driving member.
Inventors
- 👤 Masaharu Hayashi
- 👤 Uichiro Kobashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:37
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/325; F04D29/329
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
147 words
A fan assembly for cooling radiators of automotive vehicles comprising a hub portion provided with blades extending therefrom and bolt holes therein, said hub portion and blades being made of a plastic material, a driving member, a plurality of bolts passing through the bolt holes and said driving member to secure said hub portion to said driving member, a bush inserted in each bolt hole, each bush having a first outwardly extending flange means at one end of each bush and disposed between said hub portion and said driving member and a second outwardly extending flange means at the other end of each bush, the outer end of said second flange means being pressed into the plastic hub portion, whereby said hub portion and said bush are firmly secured to each other to prevent creeping of said hub portion due to concentrated stress and/or thermal shock thereon.
Claim 2
Dependent Claim
147 words
A fan assembly for cooling radiators of automotive vehicles comprising a hub portion provided with blades extending therefrom and bolt holes therein, said hub portion and blades being made of a plastic material, a driving member, a plurality of bolts passing through the bolt holes and said driving member to secure said hub portion to said driving member, a bush inserted in each bolt hole, each bush having a first outwardly extending flange means at one end of each bush and disposed between said hub portion and said driving member and a second outwardly extending flange means at the other end of each bush, the outer end of said second flange means being pressed into the plastic hub portion, whereby said hub portion and said bush are firmly secured to each other to prevent creeping of said hub portion due to concentrated stress and/or thermal shock thereon.
Claim 3
Dependent Claim
20 words
A fan assembly as claimed in claim 1, wherein said driving member is the output member of a fluid coupling.
Claim 4
Dependent Claim
26 words
A fan assembly as claimed in claim 1, wherein the flange of each bush disposed between said hub portion and said driving member is bent double.
Claim 5
Dependent Claim
41 words
A fan assembly as claimed in claim 1 wherein said at least one end of each bush is split longitudinally thereof and wherein at least one of said flange means is formed by bending outwardly the sPlit ends of the bush.
Claim 6
Dependent Claim
44 words
A fan assembly as claimed in claim 1, wherein said at least one end of each bush is provided with longitudinally extending notches and wherein at least one of said flange means is formed by bending outwardly the portions between the longitudinally extending notches.
Claim 7
Dependent Claim
38 words
A fan assembly as claimed in claim 3 wherein the end of each bush remote from said driving member is split longitudinally and wherein the flange means is formed by bending outwardly the split ends of the bush.
Claim 8
Dependent Claim
42 words
A fan assembly as claimed in claim 3 wherein the end of each bush remote from said driving member is provided with longitudinally extending notches and wherein the flange means is formed by bending outwardly the portions between the longitudinally extending notches.
References Cited (Backward Citations)
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US2381567A
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US2838244A
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US2948268A
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US3014568A
Cited
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Cited
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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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |