US3756092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw drive
Assignee: Individual
•
Filing: 1971-12-02
•
Granted: 1973-09-04
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Expires: 1991-12-02
Abstract
Abstract A screw drive with a threaded spindle and with a screw member having an inner thread for threaded engagement with the spindle thread in which the inner thread of said screw member has a greater diameter than the spindle thread and in which the screw member is eccentrically arranged with regard to the longitudinal axis of the spindle and is adapted to rest on bearing means or roller means of a frame guided by the spindle.
Inventors
- 👤 R Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:27
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2285; F16H25/229; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19805
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engageable with said screw member, said screw member having a shoulder therewith, and means engagable with said screw member comprising bearing means adapted to roll on and along said shoulder.
Claim 2
Dependent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engageable with said screw member, said screw member having a shoulder therewith, and means engagable with said screw member comprising bearing means adapted to roll on and along said shoulder.
Claim 3
Dependent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, said screw member having a collar, and the means engagable with said screw member comprising roller means adapted to roll on and along said collar.
Claim 4
Dependent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, said screw member having a collar, and the means engagable with said screw member comprising roller means adapted to roll on and along said collar.
Claim 5
Dependent Claim
24 words
A screw drive according to claim 2, in which the axis of said screw member is substantially parallel to the axis of said spindle.
Claim 6
Dependent Claim
19 words
A screw drive according to claim 2, in which the roller means engage the outside of said screw member.
Claim 7
Dependent Claim
32 words
A screw drive according to claim 2, in which the means for eccentrically arranging and maintaining said screw member includes spacer means between said roller means and portions of said frame means.
Claim 8
Dependent Claim
21 words
A screw drive according to claim 5, in which said frame means is provided with bearing means slidably surrounding said spindle.
Claim 9
Dependent Claim
103 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, and brake means arranged outside said screw member and operable selectively to control the rotary movement of said screw member.
Claim 10
Dependent Claim
103 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, and brake means arranged outside said screw member and operable selectively to control the rotary movement of said screw member.
Claim 11
Dependent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, and pivotable fork means operable to engage said screw member and to vary its eccentricity with regard to said spindle in an infinitely variable manner.
Claim 12
Dependent Claim
108 words
A screw drive which includes: a spindle with an outer thread, a hollow screw member provided with an inner thread of a larger diameter than the diameter of said spindle thread, said screw member surrounding said spindle while being adapted by means of its inner thread threadedly to engage said spindle thread means for eccentrically arranging and maintaining said screw member with regard to said spindle, frame means including means slidable on said spindle thread and comprising means engagable with said screw member, and pivotable fork means operable to engage said screw member and to vary its eccentricity with regard to said spindle in an infinitely variable manner.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |