US3890859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque driver tool
Assignee: Consolidated Devices Inc
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Filing: 1974-08-09
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Granted: 1975-06-24
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Expires: 1994-08-09
Abstract
Abstract A torque driver tool comprising an elongate tubular body with front and rear ends, a block in the front end of the body, an elongate drive shaft rotatably engaged in the block and having a work-engaging head forward of the block and a rear end in the body, a thrust between the shaft and block and novel clutch means comprising a driven plate with a rear surface having radially extending channels arranged rearward of the block, a thrust bearing between the block and drive plate, means coupling the shaft and drive plate, radially extending cam parts in said channels with convex portions projecting rearwardly from said surface, an axially shiftable drive plate with a front surface having a radially extending channel and spaced from the driven plate, a radially extending drive bar fixed in the body and having a portion engaged in the channel in the drive plate, spaced ball bearings between the front and rear surfaces and engaged with and between the bar and convex portions of the cam parts and spring means normally yieldingly urging the drive plate toward the driven plate under predetermined pressure.
Inventors
- 👤 Bosko Grabovac
- 👤 Ivan N Vuceta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:39
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/142; B25B23/1422; B25B23/1427
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
264 words
A torque driver tool comprising an elongate tubular body with front and rear ends, a block in the front end of the body and having a central, axially extending opening, an elongate drive shaft rotatably engaged in said opening and having a work engaging front end projecting from the block and body and a rear end projecting into the body, thrust bearing means between the shaft and block, a driven plate with a rear surface and radially extending and rearwardly opening channels rotatably positioned in the body rearward of the block, a thrust bearing between the block and drive plate, coupling means coupling the rear end of the shaft and drive plate in rotary driving engagement, radially extending cam parts engaged in the channels in the drive plate in rotary driving engagement therewith and having convex portions projecting rearwardly from the rear surface, an axially shiftable drive plate with a front surface in the body in rearward spaced relationship with the driven plate and having a radially extending forwardly opening channel, an elongate radially extending ball engaging drive bar fixed in the body between the plates and having a rear portion slidably engaged in the forward portion of the channel in the drive plate, circumferentially spaced balls positioned between and normally engaging the front and rear surfaces and engageable with the drive bar and the convex portions of the cam parts and spring means in the body rearward of the drive plate and normally yieldingly urging the drive plate forwardly in the body toward the driven plate with the balls in bearing engagement therebetween.
Claim 2
Dependent Claim
264 words
A torque driver tool comprising an elongate tubular body with front and rear ends, a block in the front end of the body and having a central, axially extending opening, an elongate drive shaft rotatably engaged in said opening and having a work engaging front end projecting from the block and body and a rear end projecting into the body, thrust bearing means between the shaft and block, a driven plate with a rear surface and radially extending and rearwardly opening channels rotatably positioned in the body rearward of the block, a thrust bearing between the block and drive plate, coupling means coupling the rear end of the shaft and drive plate in rotary driving engagement, radially extending cam parts engaged in the channels in the drive plate in rotary driving engagement therewith and having convex portions projecting rearwardly from the rear surface, an axially shiftable drive plate with a front surface in the body in rearward spaced relationship with the driven plate and having a radially extending forwardly opening channel, an elongate radially extending ball engaging drive bar fixed in the body between the plates and having a rear portion slidably engaged in the forward portion of the channel in the drive plate, circumferentially spaced balls positioned between and normally engaging the front and rear surfaces and engageable with the drive bar and the convex portions of the cam parts and spring means in the body rearward of the drive plate and normally yieldingly urging the drive plate forwardly in the body toward the driven plate with the balls in bearing engagement therebetween.
Claim 3
Dependent Claim
51 words
A structure as set forth in claim 1 wherein said block has a flat axially disposed rear surface, the driven block has a flat axially disposed front surface and wherein said thrust bearing comprises an annular anti-friction bearing assembly between the rear and front surfaces of the block and driven plate.
Claim 4
Dependent Claim
66 words
A structure as set forth in claim 1 wherein said coupling means comprises a central opening entering the front end of the driven plate and freely receiving the rear end of the shaft, radially and axially extending slots in the driven plate communicating with the opening therein and a radially extending drive pin carried by the rear end of the shaft and engaged in the slots.
Claim 5
Dependent Claim
51 words
A structure as set forth in claim 3 wherein said block has a flat axially disposed rear surface, the driven block has a flat axially disposed front surface and wherein said thrust bearing comprises an annular anti-friction bearing assembly between the rear and front surfaces of the block and drive plaTe.
Claim 6
Dependent Claim
60 words
A structure as set forth in claim 1 wherein said thrust bearing means between the block and shaft comprises and annular radially outwardly opening ball race in the shaft, a radial opening in the block communicating with the race, a ball bearing engaged in and between the radial opening and the race and means in said opening retaining the ball.
Claim 7
Dependent Claim
51 words
A structure as set forth in claim 5 wherein said block has a flat axially disposed rear surface, the driven block has a flat axially disposed front surface and wherein said thrust bearing comprises an annular anti-friction bearing assembly between the rear and front surfaces of the block and driven plate.
Claim 8
Dependent Claim
66 words
A structure as set forth in claim 6 wherein said coupling means comprises a central opening entering the front end of the driven plate and freely receiving the rear end of the shaft, radially and axially extending slots in the driven plate communicating with the opening therein and a radially extending drive pin carried by the rear end of the shaft and engaged in the slots.
Claim 9
Dependent Claim
68 words
A structure as set forth in claim 1 wherein the spring means includes an elongate helical compression spring in the body rearward of and engaging the drive plate, a plug in the body rearward of the spring, a spring follower between the spring and the plug and an elongate screw threading engaged through the plug to engage the follower and accessible at the rear end of the body.
Claim 10
Dependent Claim
146 words
A structure as set forth in claim 8 which further includes an elongate manually engageable sleeve with front and rear ends telescopically engaged about the body and axially shiftable relative to the body from a normal forward position to an actuated rear position, a central core in the sleeve projecting forwardly from the rear end thereof into the body and having a central polygonal opening, and elongate axially shiftable nut fixed on the rear end of the screw and slidably engaged in the polygonal opening, releasable spline means on and between the rear portion of the body and the sleeve establishing rotary driving engagement therebetween, when the sleeve is in its normal position, circumferentially spaced calibrations on the front end of the sleeve and axially spaced calibrations on the body cooperatively related to the calibrations on the sleeve when said sleeve is in its actuated position.
Claim 11
Dependent Claim
51 words
A structure as set forth in claim 9 wherein said block has a flat axially disposed rear surface, the driven block having a flat axially disposed front surface and wherein said thrust bearing comprises an annular anti-friction bearing assembly between the rear and front surfaces of the block and driven plate
Claim 12
Dependent Claim
66 words
A structure as set forth in claim 10 wherein said coupling means comprises a central opening entering the front end of the driven plate and freely receiving the rear end of the shaft, radially and axially extending slots in the driven plate communicating with the opening therein and a radially extending drive pin carried by the rear end of the shaft and engaged in the slots.
Claim 13
Dependent Claim
60 words
A structure as set forth in claim 9 wherein said thrust bearing means between the block and shaft comprises an annular radially outwardly opening ball race in the shaft, a radial opening in the block communicating with the race, a ball bearing engaged in and between the radial opening and the race and means in said opening retaining the ball.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |