US3758930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hub or bearing housing, and pulley
Assignee: FROST ENG PROD Inc
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Filing: 1971-11-18
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Granted: 1973-09-18
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Expires: 1991-11-18
Abstract
Abstract This disclosure relates to a novel hub or bearing housing, pulley, and the like and to the method of fabricating such hub or bearing housings, grooved metal pulleys, and the like in which a hub flange forming the housing is formed from a one-piece metal disk utilizing metal-splitting techniques. The disk is provided with an inner opening in its central portion and is held between a pair of die members between the inner opening and its outer diameter thereby leaving the inner opening free so that the disk may be split and expanded toward the die. Flanges formed on the inner diameter of the die are shaped to receive and form a hub or bearing housing in the disk as the material is split and expanded toward the die. In another embodiment of the invention, a pulley groove and bearing housing are formed from a one-piece metal disk in a simultaneous splitting operation. Flanges on the inner and outer diameters of a pair of cooperating die members are shaped to receive and form a hub or bearing housing about the inner diameter while simultaneously receiving and forming the rim or pulley groove about the outer diameter of the disk.
Inventors
- 👤 C Frost
- 👤 S Weis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:51
CPC Classifications
B; B21; B21H; B21H1/00; B21H1/02; B21H1/04; B21D; B21D53/00; B21D53/10; F; F16; F16C; F16C35/00; F16C35/04; F16C35/06; F16C35/067; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49453; Y10T29/49458; Y10T29/49481; Y10T29/49492; Y10T29/49533; Y10T29/49536; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
57 words
In a method of forming a hub or bearing housing the steps comprising: providing a disk-shaped metallic blank having a central opening formed therein; rotating said blank about an axis defined by said central opening; splitting said blank about the peripheral edge of said opening; and forming a pair of annularly extending hub flanges about said opening.
Claim 2
Dependent Claim
57 words
In a method of forming a hub or bearing housing the steps comprising: providing a disk-shaped metallic blank having a central opening formed therein; rotating said blank about an axis defined by said central opening; splitting said blank about the peripheral edge of said opening; and forming a pair of annularly extending hub flanges about said opening.
Claim 3
Dependent Claim
41 words
The method as defined in claim 1 and further comprising the steps of forming one of said pair of flanges radially inwardly about said opening; and forming the other of said pair of flanges to extend annularly outwardly about said opening.
Claim 4
Dependent Claim
50 words
The method as defined in claim 2 and further comprising the steps of placing a bearing in said opening adjacent said one of said pair of flanges; and folding said other of said pair of flanges radially inwardly about said opening to fix said bearing between said pair of flanges.
Claim 5
Dependent Claim
52 words
The method as defined in claim 2 and further comprising the steps of placing a hub member in said opening adjacent said one of said pair of flanges; and folding said other of said pair of flanges radially inwardly about said opening to fix said hub member between said pair of flanges.
Claim 6
Independent Claim
56 words
A method of forming a pulley comprising: providing a disk-shaped metallic blank having a central opening formed therein and an outer circular peripheral edge; rotating said blank about an axis defined by said central opening; and simultaneously splitting and forming said blank about the peripheral edge of said central opening and about its outer peripheral edge.
Claim 7
Independent Claim
56 words
A method of forming a pulley comprising: providing a disk-shaped metallic blank having a central opening formed therein and an outer circular peripheral edge; rotating said blank about an axis defined by said central opening; and simultaneously splitting and forming said blank about the peripheral edge of said central opening and about its outer peripheral edge.
Claim 8
Dependent Claim
30 words
The method of forming a pulley as defined in claim 5 and further comprising the step of: forming a pair of annular flanges about said peripheral edge of said opening.
Claim 9
Dependent Claim
36 words
The method of forming a pulley as defined in claim 6 and further comprising the steps of placing a bearing in said opening between said annular flanges; and crimping said flanges to hold said bearing therebetween.
Claim 10
Independent Claim
113 words
A method of forming a pulley comprising the steps of: providing a disk-shaped metallic blank having an outer circular peripheral edge and an inner circular peripheral edge forming a central opening therein; fixing said disk between a pair of matched forming dies; rotating said forming dies and blank about a central axis; urging a first splitting tool into said outer peripheral edge of said blank along an axis transverse to said central axis to split said outer edge and form a groove therearound; and simultaneously urging a second splitting and forming tool into said inner peripheral edge along said transverse axis toward said first splitting and forming tool to form a hub therein.
Claim 11
Independent Claim
113 words
A method of forming a pulley comprising the steps of: providing a disk-shaped metallic blank having an outer circular peripheral edge and an inner circular peripheral edge forming a central opening therein; fixing said disk between a pair of matched forming dies; rotating said forming dies and blank about a central axis; urging a first splitting tool into said outer peripheral edge of said blank along an axis transverse to said central axis to split said outer edge and form a groove therearound; and simultaneously urging a second splitting and forming tool into said inner peripheral edge along said transverse axis toward said first splitting and forming tool to form a hub therein.
Claim 12
Independent Claim
169 words
A method of forming a grooved pulley comprising the steps of: providing a disk-shaped metallic blank having an outer circular peripheral edge and an inner circular peripheral edge forming a central opening therein; fixing said disk between a pair of forming dies; rotating said forming dies and blank about an axis of rotation; engaging the outer edge portion of the blank with the sharpened edge of a splitting tool; urging the splitting tool toward the axis of rotation to split the edge portion into a pair of flanges; urging a forming tool toward the axis of rotation to force said flanges outwardly toward said die member to thereby form a groove about the outer edge portion of the disk; simultaneously engaging the inner edge portion of the disk with the sharpened edge of a splitting and forming tool; and urging the splitting and forming tool away from said axis of rotation toward said splitting tool to split and form a hub about said inner edge portion of the disk.
Claim 13
Independent Claim
169 words
A method of forming a grooved pulley comprising the steps of: providing a disk-shaped metallic blank having an outer circular peripheral edge and an inner circular peripheral edge forming a central opening therein; fixing said disk between a pair of forming dies; rotating said forming dies and blank about an axis of rotation; engaging the outer edge portion of the blank with the sharpened edge of a splitting tool; urging the splitting tool toward the axis of rotation to split the edge portion into a pair of flanges; urging a forming tool toward the axis of rotation to force said flanges outwardly toward said die member to thereby form a groove about the outer edge portion of the disk; simultaneously engaging the inner edge portion of the disk with the sharpened edge of a splitting and forming tool; and urging the splitting and forming tool away from said axis of rotation toward said splitting tool to split and form a hub about said inner edge portion of the disk.
Claim 14
Dependent Claim
27 words
The method of claim 9 and further comprising the setps of: removing the formed blank from between said forming dies; and fiXing a bearing in said hub.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |