Patent US3841416A successfully refreshed from Google Patents.
US3841416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable jig-saw and spindle sander
Assignee: Black and Decker Corp
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Filing: 1972-08-15
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Granted: 1974-10-15
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Expires: 1992-08-15
Abstract
Abstract In a portable electric power tool of the type having a housing including a handle, an electric motor, and an output shaft, selectively operable means movable to one position for connecting the motor with the shaft for reciprocating the latter at a selected rate for jig-saw operation and movable to a second position for connecting the motor with the shaft for rotating the latter and simultaneously reciprocating the shaft at a rate less than the selected rate for spindle-sander operation, the selectively operable means being movable to a third non-driving position wherein the output shaft may be manually rotated and thus angularly positioned for subsequent use as, for example, in sawing.
Inventors
- 👤 H Pfister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
B; B44; B44B; B44B3/00; B23; B23D; B23D49/00; B23D49/10; B23D49/16; B23D49/162; B23D51/00; B23D51/16; B25; B25F; B25F3/00; B27; B27C; B27C9/00; B27C9/005; Y; Y10; Y10T; Y10T408/00; Y10T408/31; Y10T74/00; Y10T74/18; Y10T74/18024; Y10T74/18032
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A portable electric tool comprising a housing having a rotary electric motor therein, a horizontal shoe plate supported upon said housing beneath said motor and adapted to support said tool for movement over a workpiece, said housing including a generally horizontal handle disposed above said motor, switch means associated with said handle for control of said motor, and a power train within said housing and interconnecting said motor and an output shaft, said power train including manually operable selector means for converting the motion of said output shaft from relatively high speed reciprocation through a given stroke length to rotation and relatively low speed reciprocation through said given stroke length without requiring motor speed variation.
Claim 2
Dependent Claim
115 words
A portable electric tool comprising a housing having a rotary electric motor therein, a horizontal shoe plate supported upon said housing beneath said motor and adapted to support said tool for movement over a workpiece, said housing including a generally horizontal handle disposed above said motor, switch means associated with said handle for control of said motor, and a power train within said housing and interconnecting said motor and an output shaft, said power train including manually operable selector means for converting the motion of said output shaft from relatively high speed reciprocation through a given stroke length to rotation and relatively low speed reciprocation through said given stroke length without requiring motor speed variation.
Claim 3
Dependent Claim
140 words
A portable power tool comprising a housing, a motor in said housing, handle means on said housing, manual control means on said housing for said motor, an output shaft supported on said housing for rotation and reciprocation and adapted to have tool means fixed thereto, a power train interconnecting said motor and said shaft and including manually operable means movable from a first position where said motor rotates said shaft, to a second position where said motor reciprocates said shaft, said train including a gear keyed to said shaft and driven by said motor when said manually operable means is in said first position, and locking means on said housing movable into locking engagement with the teeth of said gear to prevent rotation of said gear and said shaft only when said manually operable means is in said second position.
Claim 4
Dependent Claim
140 words
A portable power tool comprising a housing, a motor in said housing, handle means on said housing, manual control means on said housing for said motor, an output shaft supported on said housing for rotation and reciprocation and adapted to have tool means fixed thereto, a power train interconnecting said motor and said shaft and including manually operable means movable from a first position where said motor rotates said shaft, to a second position where said motor reciprocates said shaft, said train including a gear keyed to said shaft and driven by said motor when said manually operable means is in said first position, and locking means on said housing movable into locking engagement with the teeth of said gear to prevent rotation of said gear and said shaft only when said manually operable means is in said second position.
Claim 5
Dependent Claim
185 words
A portable power tool comprising a housing, a motor in said housing, handle means on said housing, manual control means on said housing for said motor, an output shaft supported on said housing for rotation and reciprocation and adapted to have tool means fixed thereto, a power train interconnecting said motor and said shaft and including manually operable means movable from a first position where said motor rotates said shaft, to a second position where said motor reciprocates said shaft, said train including a gear keyed to said shaft and driven by said motor when said manually operable means is in said first position, and locking means on said housing movable into locking engagement with the teeth of said gear to prevent rotation of said gear and said shaft only when said manually operable means is in said second position, said manually operable means being movable to a third position where said motor is out of driving engagement with said gear and said locking means is out of locking engagement with said gear teeth, whereby said shaft may be manually adjusted angularly about its axis.
Claim 6
Dependent Claim
185 words
A portable power tool comprising a housing, a motor in said housing, handle means on said housing, manual control means on said housing for said motor, an output shaft supported on said housing for rotation and reciprocation and adapted to have tool means fixed thereto, a power train interconnecting said motor and said shaft and including manually operable means movable from a first position where said motor rotates said shaft, to a second position where said motor reciprocates said shaft, said train including a gear keyed to said shaft and driven by said motor when said manually operable means is in said first position, and locking means on said housing movable into locking engagement with the teeth of said gear to prevent rotation of said gear and said shaft only when said manually operable means is in said second position, said manually operable means being movable to a third position where said motor is out of driving engagement with said gear and said locking means is out of locking engagement with said gear teeth, whereby said shaft may be manually adjusted angularly about its axis.
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |