Patent US3717044A successfully refreshed from Google Patents.
US3717044A
Expired / Lapsed
US
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Index device
Assignee: Nachi Machining Technology Co
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Filing: 1971-02-04
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Granted: 1973-02-20
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Expires: 1991-02-04
Abstract
Abstract An index device including a locating or indexing pawl and a driving pawl, and means for effecting timed engagement and disengagement between said pawls and an index plate to maintain positive control of the index plate at all times.
Inventors
- 👤 A Bassoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:59
CPC Classifications
F; F16; F16H; F16H27/00; F16H27/02; F16H31/00; F16H31/003; F16H31/005; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1471; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
299 words
An index device comprising a frame, an index plate having peripheral index notches, means supporting said plate for rotation about the index axis on said frame, an index pawl movable on said frame into and out of indexing engagement with a sequence of notches on said plate, an oscillator mounted on said frame for oscillation about the index axis, abutment means acting between said frame and said oscillator and limiting movement of said oscillator relative to said frame, a driving pawl operatively connected to said oscillator and movable relative thereto into and out of driving relation with a notch on said index plate, a separate independently movable pawl control member for each of said pawls, a single actuator, and means operatively connecting said actuator to said pawl control members and to said oscillator and operable upon movement of said actuator in one direction from a first position to a second position determined by said abutment means to effect timed operation of said pawl control members and said oscillator to first engage said driving pawl in a notch on said index plate, then to disengage said index pawl from a notch on said index plate, and thereafter to couple said actuator and said oscillator together for simultaneous movement and to move said oscillator and said index plate through a distance determined by said abutment means to effect index rotation of said index plate and operable upon movement of said actuator in the opposite direction from said second position to said first position, to first engage said index pawl in a notch of said index plate, then to retract said driving pawl from a notch in said index plate, and finally to reversely move said oscillator to move said driving pawl into registration with a different notch of said index plate.
Claim 2
Dependent Claim
299 words
An index device comprising a frame, an index plate having peripheral index notches, means supporting said plate for rotation about the index axis on said frame, an index pawl movable on said frame into and out of indexing engagement with a sequence of notches on said plate, an oscillator mounted on said frame for oscillation about the index axis, abutment means acting between said frame and said oscillator and limiting movement of said oscillator relative to said frame, a driving pawl operatively connected to said oscillator and movable relative thereto into and out of driving relation with a notch on said index plate, a separate independently movable pawl control member for each of said pawls, a single actuator, and means operatively connecting said actuator to said pawl control members and to said oscillator and operable upon movement of said actuator in one direction from a first position to a second position determined by said abutment means to effect timed operation of said pawl control members and said oscillator to first engage said driving pawl in a notch on said index plate, then to disengage said index pawl from a notch on said index plate, and thereafter to couple said actuator and said oscillator together for simultaneous movement and to move said oscillator and said index plate through a distance determined by said abutment means to effect index rotation of said index plate and operable upon movement of said actuator in the opposite direction from said second position to said first position, to first engage said index pawl in a notch of said index plate, then to retract said driving pawl from a notch in said index plate, and finally to reversely move said oscillator to move said driving pawl into registration with a different notch of said index plate.
Claim 3
Dependent Claim
299 words
An index device comprising a frame, an index plate having peripheral index notches, means supporting said plate for rotation about the index axis on said frame, an index pawl movable on said frame into and out of indexing engagement with a sequence of notches on said plate, an oscillator mounted on said frame for oscillation about the index axis, abutment means acting between said frame and said oscillator and limiting movement of said oscillator relative to said frame, a driving pawl operatively connected to said oscillator and movable relative thereto into and out of driving relation with a notch on said index plate, a separate independently movable pawl control member for each of said pawls, a single actuator, and means operatively connecting said actuator to said pawl control members and to said oscillator and operable upon movement of said actuator in one direction from a first position to a second position determined by said abutment means to effect timed operation of said pawl control members and said oscillator to first engage said driving pawl in a notch on said index plate, then to disengage said index pawl from a notch on said index plate, and thereafter to couple said actuator and said oscillator together for simultaneous movement and to move said oscillator and said index plate through a distance determined by said abutment means to effect index rotation of said index plate and operable upon movement of said actuator in the opposite direction from said second position to said first position, to first engage said index pawl in a notch of said index plate, then to retract said driving pawl from a notch in said index plate, and finally to reversely move said oscillator to move said driving pawl into registration with a different notch of said index plate.
Claim 4
Dependent Claim
299 words
An index device comprising a frame, an index plate having peripheral index notches, means supporting said plate for rotation about the index axis on said frame, an index pawl movable on said frame into and out of indexing engagement with a sequence of notches on said plate, an oscillator mounted on said frame for oscillation about the index axis, abutment means acting between said frame and said oscillator and limiting movement of said oscillator relative to said frame, a driving pawl operatively connected to said oscillator and movable relative thereto into and out of driving relation with a notch on said index plate, a separate independently movable pawl control member for each of said pawls, a single actuator, and means operatively connecting said actuator to said pawl control members and to said oscillator and operable upon movement of said actuator in one direction from a first position to a second position determined by said abutment means to effect timed operation of said pawl control members and said oscillator to first engage said driving pawl in a notch on said index plate, then to disengage said index pawl from a notch on said index plate, and thereafter to couple said actuator and said oscillator together for simultaneous movement and to move said oscillator and said index plate through a distance determined by said abutment means to effect index rotation of said index plate and operable upon movement of said actuator in the opposite direction from said second position to said first position, to first engage said index pawl in a notch of said index plate, then to retract said driving pawl from a notch in said index plate, and finally to reversely move said oscillator to move said driving pawl into registration with a different notch of said index plate.
Claim 5
Dependent Claim
24 words
A device as defined in claim 1, in which said oscillator comprises a plate mounted for rotation about the index axis of said device.
Claim 6
Dependent Claim
32 words
A device as defined in claim 1 in which the pawl control members are cams mounted on said oscillator, and links connecting said actuator to said cams to provide sequential operation thereon.
Claim 7
Dependent Claim
45 words
A device as defined in claim 3 in which one of said links has fixed pivot connections with said actuator and the cam which it controls, the other of said links having a lost motion connection to said actuator to provide delay in movement thereof.
Claim 8
Dependent Claim
26 words
A device as defined in claim 4, in which the lost motion connection to said other link comprises a pin and slot connection with said actuator.
Claim 9
Dependent Claim
48 words
A device as defined in claim 5, said other link being pivotally received in a recess in the pawl with which it is associated, the recess being dimensioned to have a surface engageable by said other link to prevent further movement between said one link and its cam.
Claim 10
Dependent Claim
42 words
A device as defined in claim 1 comprising adjustable abutment means acting between said actuator and said oscillator to provide for initial relative movement between said oscillator and actuator to provide for movement of said pawls prior to movement of said oscillator.
Claim 11
Dependent Claim
30 words
A device as defined in claim 7 comprising adjustable abutment means acting between said frame and oscillator to provide for determining the amount of index rotation of said index plate.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |