Patent US3637525A successfully refreshed from Google Patents.
Patent US3847042A successfully refreshed from Google Patents.
US3847042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand star wrench
Assignee: Individual
•
Filing: 1973-01-05
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Granted: 1974-11-12
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Expires: 1993-01-05
Abstract
Abstract A manual wrench for use as a high speed, low torque drive apparatus for making and breaking threaded connections and an increased leverage handle for applying high torque, low speed application in making or breaking threaded connections.
Inventors
- 👤 R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:55
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/10; B25B13/12; B25B13/16; B25B13/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A wrench conprising: a substantially circular wrench plate having a plurality of circumferentially spaced radially extending projections thereon, said radial projections having inwardly extending indentations for operative engagement by finger tips therewith; and, a wrench plate aperture in said wrench plate having a plurality of wrench faces formed therein for engaging a workpiece for imparting rotation to such workpiece, said wrench faces being movably mounted with respect to said wrench plate whereby the opening between said wrench faces may be adjusted for receiving and connecting to various size workpieces.
Claim 2
Dependent Claim
89 words
A wrench conprising: a substantially circular wrench plate having a plurality of circumferentially spaced radially extending projections thereon, said radial projections having inwardly extending indentations for operative engagement by finger tips therewith; and, a wrench plate aperture in said wrench plate having a plurality of wrench faces formed therein for engaging a workpiece for imparting rotation to such workpiece, said wrench faces being movably mounted with respect to said wrench plate whereby the opening between said wrench faces may be adjusted for receiving and connecting to various size workpieces.
Claim 3
Dependent Claim
131 words
A wrench comprising: a substantially circular wrench plate having a plurality of circumferentially spaced radially extending projections thereon, said radial projections having inwardly extending indentations for operative engagement by the finger tips therewith; and, a wrench plate aperture in said wrench plate having a locking plate mounted therewith for rotation adjacent said wrench plate for engaging a workpiece, said locking plate having a locking plate aperture overlapping said wrench plate aperture in said wrench plate, and an offset gripping means for moving said locking plate so as to misalign the locking aperture in said locking plate relative to said wrench plate aperture in said wrench plate and thereby gripping the workpiece extending through the misalignment of said wrench plate aperture and said locking plate aperture for imparting rotation to such workpiece.
Claim 4
Dependent Claim
131 words
A wrench comprising: a substantially circular wrench plate having a plurality of circumferentially spaced radially extending projections thereon, said radial projections having inwardly extending indentations for operative engagement by the finger tips therewith; and, a wrench plate aperture in said wrench plate having a locking plate mounted therewith for rotation adjacent said wrench plate for engaging a workpiece, said locking plate having a locking plate aperture overlapping said wrench plate aperture in said wrench plate, and an offset gripping means for moving said locking plate so as to misalign the locking aperture in said locking plate relative to said wrench plate aperture in said wrench plate and thereby gripping the workpiece extending through the misalignment of said wrench plate aperture and said locking plate aperture for imparting rotation to such workpiece.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |