IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0033450
(2001-12-27)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Greer, Burns & Crain, Ltd.
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인용정보 |
피인용 횟수 :
28 인용 특허 :
9 |
초록
▼
A rigid preformed insert is molded into a plastic housing for a power tool. The power tool further comprises a motor having a shaft, the motor being at least partly supported by the insert, and an impact clutch attached to the insert and operatively coupled to the motor shaft. The motor and clutch h
A rigid preformed insert is molded into a plastic housing for a power tool. The power tool further comprises a motor having a shaft, the motor being at least partly supported by the insert, and an impact clutch attached to the insert and operatively coupled to the motor shaft. The motor and clutch have a common axis, with the preformed insert located between the motor and the clutch. The insert fixedly secures the axis of the output shaft of the motor. The insert also forms a seal between the motor and clutch. The insert will not warp, distort or otherwise lose tolerance as a result of the molding process for the plastic housing. Further, because the insert is preformed of metal, is precisely orientated within the housing mold, and is permanently molded into the housing, it accurately defines the motor-clutch axis minimizing misalignment of the motor shaft.
대표청구항
▼
1. An improved power tool housing for a motor, the motor having an output shaft on one end of the motor, the improvement comprising, a molded plastic housing; a preformed insert in said housing, said insert supporting the output shaft end of the motor; and a seal between the motor and said inse
1. An improved power tool housing for a motor, the motor having an output shaft on one end of the motor, the improvement comprising, a molded plastic housing; a preformed insert in said housing, said insert supporting the output shaft end of the motor; and a seal between the motor and said insert. 2. An improved power tool housing as in claim 1, wherein said preformed insert is molded into said plastic housing. 3. An improved power tool housing as in claim 1, wherein said plastic housing is molded from fiberglass filled nylon. 4. An improved power tool housing as in claim 1, wherein said preformed insert is metal. 5. An improved power tool housing as in claim 4, wherein said insert is machined. 6. An improved power tool housing as in claim 1, wherein said insert is machined aluminum. 7. An improved power tool housing as in claim 1, wherein the motor has an axis, said insert is centered on said axis, and said insert fixedly supports the motor on said axis. 8. A power tool comprising a housing comprised substantially of plastic, a metal insert molded into said housing, a motor in said housing, an output end of said motor having a bearing and a shaft rotationally supported by said bearing, said insert supporting the output end of said motor, and a clutch at least partly received in said insert and operatively coupled to said motor shaft, wherein said motor and said clutch have a common axis, said insert is between said motor and said clutch, and said insert fixedly secures said shaft on said common axis. 9. A power tool, comprising a housing comprised substantially of plastic, a metal insert molded into said housing, and a motor in said housing, an output end of said motor having a bearing and a shaft rotationally supported by said bearing, said insert supporting the output end of said motor. 10. A power tool as in claim 9, wherein said motor is an air motor. 11. A power tool as in claim 9, further comprising a clutch at least partly received in said insert and operatively coupled to said motor shaft. 12. A power tool as in claim 11, wherein said clutch is a rotary impact clutch. 13. A power tool as in claim 9, wherein said metal insert is directly and permanently secured to said plastic housing. 14. A power tool as in claim 11, wherein said motor is an air motor and said insert forms a seal between said air motor and said clutch. 15. A power tool as in claim 11, wherein said plastic housing is comprised of a fiberglass and nylon composite. 16. A power tool as in claim 11, wherein said insert is machined aluminum. 17. A method for making a power tool housing, comprising the steps of: fabricating an insert from a rigid material; positioning the insert in a housing mold to define an axis; injecting the housing mold with plastic to form a housing and permanently secure the insert therein; and installing a motor into the insert, the motor having a shaft supported for rotation, about the axis. 18. A method as in claim 17, wherein the step of fabricating the insert comprises machining the insert from metal. 19. A method as in claim 17, wherein the plastic is a fiberglass and nylon composite. 20. A method as in claim 17, further comprising installing a clutch on the housing, and coupling the clutch to the motor shaft.
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