US3710641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead screw
Assignee: Individual
•
Filing: 1971-02-16
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Granted: 1973-01-16
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Expires: 1991-02-16
Abstract
Abstract The present invention is to a lead screw for use in a variety of tools, for example, clamps, portable vises, set up tools, set up jacks and other machine or hand tool and/or fastening or securing assemblies in which the threads provide for quick and easy adjustment and sure, rapid locking when in a predetermined position.
Inventors
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:23
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/2025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18688; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
In a lead screw for tools which comprises a threaded stud having a plurality of cut down sections extending along its length at spaced apart intervals around its periphery and threaded sections in between said cut down sections, the improvement which comprises the trailing edge of each threaded section being deformed so as to provide a stop.
Claim 2
Dependent Claim
57 words
In a lead screw for tools which comprises a threaded stud having a plurality of cut down sections extending along its length at spaced apart intervals around its periphery and threaded sections in between said cut down sections, the improvement which comprises the trailing edge of each threaded section being deformed so as to provide a stop.
Claim 3
Dependent Claim
45 words
The improved lead screw as defined in Claim 1 and having in combination therewith a connector, said connector having a mating through passage, said through passage providing for ready sliding of said screw therein and having threaded sections mating with those of said lead screw.
Claim 4
Dependent Claim
53 words
The improved lead screw as defined in claim 1 which has two diametrically opposed cut down sections and two threaded sections in between said cut down sections and wherein the improvement comprises the trailing edge of each section of said threads being flattened at its trailing edge so as to provide a stop.
Claim 5
Dependent Claim
51 words
The improved lead screw as defined in claim 3 wherein each of said cut down sections extend for an arc of from about 90* to about 100* and each of Said threaded sections extends for an arc of from about 80* to about 90* around the periphery of said lead screw.
Claim 6
Dependent Claim
108 words
The improved lead screw as defined in claim 3 and having in combination therewith a connector, said connector defining a through passage, said through passage being generally circular in shape but elongated at two opposite positions, said threaded sections having threads mating with those of said lead screw, the elongated sections being non-threaded, said passage being of a size to permit the lead screw to be freely slid up and down therein when the threaded sections of said lead screw are adjacent said non-threaded sections of said passage but wherein the threads of said lead screw and said passage mate when said screw is rotated within said passage.
Claim 7
Dependent Claim
30 words
The improved lead screw and connector as defined in claim 5 wherein said connector is a collar, the external surface of which mates with a passage in a tool member.
Claim 8
Dependent Claim
27 words
The improved lead screw and connector as defined in claim 5 wherein the connector is a through passage in a tool member employed with said lead screw.
Claim 9
Dependent Claim
29 words
The improved lead screw and connector as defined in claim 6 wherein the collar has external threads, said threads mating with threads in a passage of a tool member.
Claim 10
Dependent Claim
19 words
The improved lead screw and connector as defined in claim 6 wherein the collar has a smooth external surface.
Claim 11
Dependent Claim
44 words
The improved lead screw as defined in claim 1 and having a second threaded portion on one end, said second threaded portion being of opposite handed threads than that of the stop containing threaded section in between said cut down sections of the stud.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |