US3878802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor housing and method of making the same
Assignee: Robert Bosch GmbH
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Filing: 1973-06-15
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Granted: 1975-04-22
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Expires: 1993-06-15
Abstract
Abstract A housing wall of sheet metal is bent around an end piece which engages the wall thus bent around it near one edge of the tube thus formed in such a way as to be held fast at least against axial displacement. The firmness of engagement is provided by perforations in the wall into which tongues of the end piece may penetrate. As the bending of the wall around the end piece is completed, a dove tail joint of the meeting edges of the wall completes the continuity of the wall.
Inventors
- 👤 Jakob Schmitt
- 👤 Willy Voit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:38
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/14; H02K5/00; H02K5/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
A method of producing pot-shaped housings, of the type used to house small electric motors, from a housing end piece and a housing wall piece, comprising the steps of: making the end piece so as to provide a plurality of radially projecting tabs on its periphery; making the housing wall piece in the forM of a flat strip with holding slots in which said tabs of said end piece may engage when said wall piece is bent around said end piece; bending said wall piece around said end piece while sequentially engaging said end piece tabs in said holding slots so that by the time said wall piece is fully bent around said end piece, said end piece is already fully held against axial and rotational displacement with respect to said wall piece, and completing the bending of said wall piece around said end piece by securing together the meeting edges thereof to form a closed circumferential wall or tube holding said end piece in one axial end thereof.
Claim 2
Independent Claim
169 words
A method of producing pot-shaped housings, of the type used to house small electric motors, from a housing end piece and a housing wall piece, comprising the steps of: making the end piece so as to provide a plurality of radially projecting tabs on its periphery; making the housing wall piece in the forM of a flat strip with holding slots in which said tabs of said end piece may engage when said wall piece is bent around said end piece; bending said wall piece around said end piece while sequentially engaging said end piece tabs in said holding slots so that by the time said wall piece is fully bent around said end piece, said end piece is already fully held against axial and rotational displacement with respect to said wall piece, and completing the bending of said wall piece around said end piece by securing together the meeting edges thereof to form a closed circumferential wall or tube holding said end piece in one axial end thereof.
Claim 3
Independent Claim
169 words
A method of producing pot-shaped housings, of the type used to house small electric motors, from a housing end piece and a housing wall piece, comprising the steps of: making the end piece so as to provide a plurality of radially projecting tabs on its periphery; making the housing wall piece in the forM of a flat strip with holding slots in which said tabs of said end piece may engage when said wall piece is bent around said end piece; bending said wall piece around said end piece while sequentially engaging said end piece tabs in said holding slots so that by the time said wall piece is fully bent around said end piece, said end piece is already fully held against axial and rotational displacement with respect to said wall piece, and completing the bending of said wall piece around said end piece by securing together the meeting edges thereof to form a closed circumferential wall or tube holding said end piece in one axial end thereof.
Claim 4
Independent Claim
169 words
A method of producing pot-shaped housings, of the type used to house small electric motors, from a housing end piece and a housing wall piece, comprising the steps of: making the end piece so as to provide a plurality of radially projecting tabs on its periphery; making the housing wall piece in the forM of a flat strip with holding slots in which said tabs of said end piece may engage when said wall piece is bent around said end piece; bending said wall piece around said end piece while sequentially engaging said end piece tabs in said holding slots so that by the time said wall piece is fully bent around said end piece, said end piece is already fully held against axial and rotational displacement with respect to said wall piece, and completing the bending of said wall piece around said end piece by securing together the meeting edges thereof to form a closed circumferential wall or tube holding said end piece in one axial end thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |