US3866692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power tools
Assignee: Boeing North American Inc
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Filing: 1973-02-02
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Granted: 1975-02-18
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Expires: 1993-02-02
Abstract
Abstract Power driven devices in which a tool is axially impacted via a driver mounted in a reciprocably driven piston. The tool can be intermittently rotated or not, as desired.
Inventors
- 👤 Charles R Stelljes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:45
CPC Classifications
B; B23; B23B; B23B45/00; B23B45/008; B25; B25D; B25D16/00; B25D16/006; B25F; B25F5/00; B25F5/001; E; E21; E21B; E21B6/00; E21B6/06; F; F16; F16D; F16D7/00; F16D7/04; F16D7/042; F16D7/044
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
224 words
A power driven device, comprising: a casing; a tool holder rotatably mounted in said casing; means which can be cycled through impacting and return strokes for imparting axial impacts to a tool mounted in said tool holder; means including a driving member and a driven member having means providing a drive connection therebetween for so connecting said impact imparting mechanism to said tool holder that said mechanism rotatably indexes said tool holder and the tool mounted therein during one of the strokes in each cycle thereof but does not effect rotation of the tool holder in The other of said strokes; and means selectively operable to effect a relative displacement between said driving and driven members which will interrupt the drive connection therebetween so that said tool can be axially impacted without rotating it, said driven member being connected to said tool holder for rotation therewith and being axially fixed relative to said casing, said tool holder and said driving member being axially movable relative to driven member, the means for connecting the impact imparting mechanism to said tool holder including means biasing said driving member toward said driven member to complete the drive connection therebetween, and the means for interrupting said drive connection being arranged to move said driving member away from said driven member against the force exerted by said biasing means.
Claim 2
Dependent Claim
224 words
A power driven device, comprising: a casing; a tool holder rotatably mounted in said casing; means which can be cycled through impacting and return strokes for imparting axial impacts to a tool mounted in said tool holder; means including a driving member and a driven member having means providing a drive connection therebetween for so connecting said impact imparting mechanism to said tool holder that said mechanism rotatably indexes said tool holder and the tool mounted therein during one of the strokes in each cycle thereof but does not effect rotation of the tool holder in The other of said strokes; and means selectively operable to effect a relative displacement between said driving and driven members which will interrupt the drive connection therebetween so that said tool can be axially impacted without rotating it, said driven member being connected to said tool holder for rotation therewith and being axially fixed relative to said casing, said tool holder and said driving member being axially movable relative to driven member, the means for connecting the impact imparting mechanism to said tool holder including means biasing said driving member toward said driven member to complete the drive connection therebetween, and the means for interrupting said drive connection being arranged to move said driving member away from said driven member against the force exerted by said biasing means.
Claim 3
Dependent Claim
133 words
The power driven device of claim 1, wherein the means for interrupting the drive connection between the driving and driven members by moving said driving member away from said driven member includes a member surrounding said driving member and having an inwardly directed flange engageable with said driving member on the side thereof nearest the driven member and means for displacing said flanged member relative to said driven member comprising a member journalled in said casing means for rotation about an axis normal to the path of movement of the flanged member and accessible from the exterior of the casing and an eccentric extending from the inward end of said pin and engaged with said flanged member, whereby said flanged member will be displaced as the member journalled in said casing is rotated.
Claim 4
Dependent Claim
59 words
The power driven device of claim 2, wherein the flanged member is cylindrical and surrounds the driving member, wherein there are rotatably journalled members as aforesaid in axial alignment in opposite sides of said casing, and wherein the means for moving the driving member away from the driven member also includes means for concomitantly rotating said rotatably journalled members.
Claim 5
Dependent Claim
95 words
The power driven member of claim 1, wherein the means for moving said driving member away from said driven member includes a fixed cam means, rotatable cam means between and engageable with said fixed cam means and that side of the driving member nearest the driven member, there being co-operating portions of said fixed and movable cam means so configured that said movable cam will be displaced relative to said fixed cam and move the driving member away from the driven member as said rotatable cam means is rotated relative to said fixed cam means.
Claim 6
Dependent Claim
60 words
The power driven member of claim 4, wherein the means for rotating said actuator comprises a member journalled in the casing for rotation about an axis normal to the path of movement of the driving member and accessible from the exterior of the casing and an inwardly extending eccentric engageable with said rotatably journalled member and said rotatable cam means.
Claim 7
Dependent Claim
93 words
The power driven device of claim 1, wherein the means for drive connecting the impact imparting mechanism to the tool holder includes a frictional drive connection providing means capable of transmitting only forces up to a selected maximum magnitude operatively connected between said impact imparting mechanism and the driving member, whereby the drive connection between the impact imparting mechanism and the tool holder is effectively interrupted while there is a rotation restraining force on said tool holder which exceeds the magnitude of the force which said frictional drive connection is capable of transmitting.
Claim 8
Dependent Claim
95 words
The power driven device of claim 1, wherein the means for drive connecting the impact imparting mechanism to the tool holder includes a ratchet means having said driving member as an input and said driven member as an output and means for rotating said driving member back and forth as said impact imparting mechanism moves through its impacting and return strokes, there being cooperating first and second means on said driving and driVen members engageable when said driving member is rotated in one direction only to rotatably advance said driven member and said tool holder.
Claim 9
Dependent Claim
118 words
A power driven device, comprising: a casing; a tool holder rotatably mounted in said casing which can be cycled through impacting and return strokes to impart axial impacts to a tool mounted in said tool holder; a mechanism for rotatably indexing said tool during only a selected part of the cycle of operation of the impact imparting mechanism which includes torque transmitting driving and driven members and means for disengaging said members when axial impact only is wanted and engaging them when both rotation and impacting is wanted; and a rotation transmitting, torque release means in series with the mechanism for rotatably indexing the tool for keeping the torque imposed on said tool from exceeding a selected value.
Claim 10
Dependent Claim
118 words
A power driven device, comprising: a casing; a tool holder rotatably mounted in said casing which can be cycled through impacting and return strokes to impart axial impacts to a tool mounted in said tool holder; a mechanism for rotatably indexing said tool during only a selected part of the cycle of operation of the impact imparting mechanism which includes torque transmitting driving and driven members and means for disengaging said members when axial impact only is wanted and engaging them when both rotation and impacting is wanted; and a rotation transmitting, torque release means in series with the mechanism for rotatably indexing the tool for keeping the torque imposed on said tool from exceeding a selected value.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |