US3824684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling an electric motor device and heat sink
Assignee: Black and Decker Corp
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Filing: 1973-08-27
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Granted: 1974-07-23
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Expires: 1993-08-27
Abstract
Abstract An electric motor housing and heat sink, and the method of assembling the same, in which a housing, constructed of electrically insulating material subject to thermal distortion, includes integral means for orienting and securing a metal heat sink therein, the latter having passages through which cooling air is drawn. The orienting means comprises deformable or meltable means such as pins integral with the housing and adapted to extend through apertures in the heat sink. The method includes assembling and retaining the heat sink into an operative integral position in the housing by deforming, for example, melting the interfitted housing pins into retaining relation against the heat sink. In addition, a shaft bearing may either be preassembled in the heat sink before assembly to the housing, or the heat sink bored and the bearing inserted therein after the heat sink is assembled to the housing.
Inventors
- 👤 D Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:47
CPC Classifications
B; B25; B25F; B25F5/00; B25F5/008; H; H02; H02K; H02K15/00; H02K15/14; H02K5/00; H02K5/04; H02K5/08; H02K5/16; H02K5/167; H02K5/1672; H02K7/00; H02K7/14; H02K7/145; H02K9/00; H02K9/02; H02K9/04; H02K9/06; H02K9/22; H02K9/227; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
99 words
The method of producing an assembled metal bearing support and heat sink, and electric motor housing, comprising the steps of: selecting an assembled bearing and metal heat sink formed with locating means, selecting a motor housing constructed at least in part from a thermoplastic material with locating means generally complementary to said first mentioned locating means, locating said heat sink relative to said motor housing using said complementary locating means and said bearing, and thereafter permanently joining said heat sink and said motor housing by deforming said locating means on said housing into retaining relation with said heat sink.
Claim 2
Independent Claim
99 words
The method of producing an assembled metal bearing support and heat sink, and electric motor housing, comprising the steps of: selecting an assembled bearing and metal heat sink formed with locating means, selecting a motor housing constructed at least in part from a thermoplastic material with locating means generally complementary to said first mentioned locating means, locating said heat sink relative to said motor housing using said complementary locating means and said bearing, and thereafter permanently joining said heat sink and said motor housing by deforming said locating means on said housing into retaining relation with said heat sink.
Claim 3
Independent Claim
94 words
The method of producing an assembled shaft support and metal heat sink, and electric motor housing, comprising the steps of: selecting a metal heat sink formed with locating apertures and a bearing bore, selecting a motor housing constructed at least in part from a thermoplastic material with locating projections, locating said heat sink and said motor housing using said apertures and projections, and means operatively engaging said bearing bore and said housing, and thereafter permanently joining said heat sink and said motor housing by deforming said projections into retaining relation with said heat sink.
Claim 4
Independent Claim
94 words
The method of producing an assembled shaft support and metal heat sink, and electric motor housing, comprising the steps of: selecting a metal heat sink formed with locating apertures and a bearing bore, selecting a motor housing constructed at least in part from a thermoplastic material with locating projections, locating said heat sink and said motor housing using said apertures and projections, and means operatively engaging said bearing bore and said housing, and thereafter permanently joining said heat sink and said motor housing by deforming said projections into retaining relation with said heat sink.
Claim 5
Independent Claim
110 words
The method of producing an assembled metal heat sink and shaft bearing and electric motor housing, comprising the steps of: selecting a metal heat sink, machining a bearing bore and forming locating apertures in said heat sink, pressing a bearing in said bearing bore, selecting a motor housing constructed at least in part from a thermoplastic material with locating projections formed integral therewith, locating said heat sink and said motor housing using said apertures and projections and means engaging said bearing and said motor housing, and permanently joining said located heat sink and said motor housing by ultrasonically exciting and deforming said projections into retaining relation with said heat sink.
Claim 6
Independent Claim
110 words
The method of producing an assembled metal heat sink and shaft bearing and electric motor housing, comprising the steps of: selecting a metal heat sink, machining a bearing bore and forming locating apertures in said heat sink, pressing a bearing in said bearing bore, selecting a motor housing constructed at least in part from a thermoplastic material with locating projections formed integral therewith, locating said heat sink and said motor housing using said apertures and projections and means engaging said bearing and said motor housing, and permanently joining said located heat sink and said motor housing by ultrasonically exciting and deforming said projections into retaining relation with said heat sink.
Claim 7
Independent Claim
103 words
The method of producing an assembled metal heat sink and electric motor housing, comprising the steps of: casting a metal heat sink, machining a bearing bore and forming locating apertures in said heat sink, forming a motor housing constructed at least in part from a molded thermoplastic material with integral locating projections, locating said heat sink and said motor housing using said apertures and projections and means engaging said motor housing and operatively engaging said bearing bore, and permanently joining said heat sink and said motor housing while accurately holding said location by deforming said projections into retaining relation with said heat sink.
Claim 8
Independent Claim
103 words
The method of producing an assembled metal heat sink and electric motor housing, comprising the steps of: casting a metal heat sink, machining a bearing bore and forming locating apertures in said heat sink, forming a motor housing constructed at least in part from a molded thermoplastic material with integral locating projections, locating said heat sink and said motor housing using said apertures and projections and means engaging said motor housing and operatively engaging said bearing bore, and permanently joining said heat sink and said motor housing while accurately holding said location by deforming said projections into retaining relation with said heat sink.
Claim 9
Independent Claim
120 words
The method of producing an assembled bearing metal heat sink, and electric motor housing, comprising the steps of: selecting a metal heat sink, machining a bearing bore in said heat sink, fitting a bearing in said bearing bore, forming a motor housing constructed at least in part from a thermoplastic material, applying locating forces to said heat sink and said motor housing using means engaging said bearing and said motor housing, and permanently joining said accurately located bearing support and heat sink and said motor housing by developing heat in said housing and soFtening and deforming material into retaining relation thereof with said heat sink, said softened housing material allowing final accurate positioning of said bearing relative to said housing.
Claim 10
Independent Claim
120 words
The method of producing an assembled bearing metal heat sink, and electric motor housing, comprising the steps of: selecting a metal heat sink, machining a bearing bore in said heat sink, fitting a bearing in said bearing bore, forming a motor housing constructed at least in part from a thermoplastic material, applying locating forces to said heat sink and said motor housing using means engaging said bearing and said motor housing, and permanently joining said accurately located bearing support and heat sink and said motor housing by developing heat in said housing and soFtening and deforming material into retaining relation thereof with said heat sink, said softened housing material allowing final accurate positioning of said bearing relative to said housing.
Claim 11
Independent Claim
100 words
The method of producing an assembled metal heat sink and electric motor housing, comprising the steps of: selecting a metal heat sink having bearing means accurately located therein and locating apertures formed therein, selecting a motor housing constructed at least in part from a thermoplastic material and having integral locating projections, locating said heat sink with its apertures receiving said motor housing projections, applying accurate aligning forces to said bearing means and said motor housing, and simultaneously joining said bearing support and heat sink and said motor housing by heat deforming said projections into retaining relation with said heat sink.
Claim 12
Independent Claim
100 words
The method of producing an assembled metal heat sink and electric motor housing, comprising the steps of: selecting a metal heat sink having bearing means accurately located therein and locating apertures formed therein, selecting a motor housing constructed at least in part from a thermoplastic material and having integral locating projections, locating said heat sink with its apertures receiving said motor housing projections, applying accurate aligning forces to said bearing means and said motor housing, and simultaneously joining said bearing support and heat sink and said motor housing by heat deforming said projections into retaining relation with said heat sink.
References Cited (Backward Citations)
US3546502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |