US3780411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making blower housing assembly
Assignee: Case LLC
•
Filing: 1972-10-19
•
Granted: 1973-12-25
•
Expires: 1992-10-19
Abstract
Abstract A method of making a blower housing assembly through the steps of forming the blower housing wrapper to extend in a curved shape and to enclose the blower blades which are powered by an electric motor or the like. Left-hand and right-hand end plates or heads are formed and attached to the wrapper to enclose the housing for directing the air therethrough. The heads are made from die sets which form an inner flange and an outer flange on each head and these flanges are facing in the same direction. The inner flange is cut away on one of the heads, is reversed thereon, and is reattached to that head so that the two end heads now have the inner flange facing toward each other. Therefore, only two dies are required to make the left-hand and the right-hand heads, as mentioned, rather than several or even five or more die sets.
Inventors
- 👤 S Bulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:29
CPC Classifications
B; B23; B23P; B23P15/00; F; F04; F04D; F04D25/00; F04D25/16; F04D25/166; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226; F04D29/424; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49245; Y10T29/49789; Y10T29/49796
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A method of making a blower housing assembly comprising the steps of forming a blower housing wrapper to extend in a reversely curved shape and present two oppositely disposed sides for respectively attaching to a left-hand head and a right-hand head of said assembly, forming both said heads with an exterior periphery flange, for attaching to said housing wrapper, forming a centrally located opening in each of said heads and forming a second flange faced in the same direction as the first said flange, removing the central portion of one of said heads by severing said one head intermediate said flanges thereon, reversing said central portion on the severed said head to have said flanges thereon faced in opposite directions and attaching said reversed central portion in the severed opening to form the opposite handed head compared to the unsevered head, and attaching said heads to said housing wrapper in orientations to have said second flanges face toward each other.
Claim 2
Independent Claim
160 words
A method of making a blower housing assembly comprising the steps of forming a blower housing wrapper to extend in a reversely curved shape and present two oppositely disposed sides for respectively attaching to a left-hand head and a right-hand head of said assembly, forming both said heads with an exterior periphery flange, for attaching to said housing wrapper, forming a centrally located opening in each of said heads and forming a second flange faced in the same direction as the first said flange, removing the central portion of one of said heads by severing said one head intermediate said flanges thereon, reversing said central portion on the severed said head to have said flanges thereon faced in opposite directions and attaching said reversed central portion in the severed opening to form the opposite handed head compared to the unsevered head, and attaching said heads to said housing wrapper in orientations to have said second flanges face toward each other.
Claim 3
Dependent Claim
39 words
The method as claimed in claim 1, wherein the forming of both said heads is accomplished by stamping to provide both said flanges and said central opening on each said head, and severing said central portion by die punching.
Claim 4
Dependent Claim
20 words
The method as claimed in claim 2, wherein said central portion is releasably attacted to the remainder of said head.
Claim 5
Dependent Claim
36 words
The method as clAimed in claim 3, including the steps of attaching threaded nuts to said severed head adjacent said severed opening, and inserting bolts into said nuts for the releasable attaching of said central portion.
Claim 6
Dependent Claim
111 words
The method as claimed in claim 1, wherein the blower assembly is a dual housing assembly having two said housings with each having a housing wrapper and a left-hand and a right-hand head, and including the steps of assembling said housings with the said severed opening being of a minimum size and on the same respective end of each of said two housings, and assembling said two housings with a driving motor intermediate said two housings for driving the fan wheel within the respective said housings, and having said severed opening being larger than the diameter of said fan wheel for removal of said fan wheel from each of said housings.
References Cited (Backward Citations)
US2710573A
Cited
US2776088A
Cited
US2948055A
Cited
US3616518A
Cited
US3554557A
Cited
US3698833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |