GB1601591A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Screw extracting device
Assignee: SSL CC Services Ltd
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Filing: 1978-05-31
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Granted: —
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Expires: 1998-05-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 01:52
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/18; A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8875; A61B17/8886; A61B17/8891
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
55 words
A screw extracting device comprising a wire having at least a helical portion, and means for effecting engagement of said helical portion of the wire onto an exposed portion of the screw thread and for rotating said helical portion of the wire to effect a grip on the screw and then to rotate the screw.
Claim 2
Dependent Claim
55 words
A screw extracting device comprising a wire having at least a helical portion, and means for effecting engagement of said helical portion of the wire onto an exposed portion of the screw thread and for rotating said helical portion of the wire to effect a grip on the screw and then to rotate the screw.
Claim 3
Dependent Claim
33 words
A screw extracting device according to
Claim 1 wherein a single tool is provided both for effecting engagement of the helical wire onto the screw thread and also for rotating the helical wire.
Claim 4
Dependent Claim
28 words
A screw extracting device according to
Claim 2 wherein the tool includes means for aligning the helical wire longitudinally with respect to the longitudinal axis of the screw.
Claim 5
Dependent Claim
39 words
A screw extracting device according to any of the preceding claims wherein the wire includes both a helical and a straight portion, the tool including means for trapping the straight portion to hold it stationary relative to the tool.
Claim 6
Dependent Claim
57 words
A screw extracting device according to
Claim 4 wherein the tool includes a body portion and the trapping means includes a member mounted on the body portion of the tool for rotation relative thereto, the member being arranged so that on rotation it will trap the straight portion of the wire against the body of the tool.
Claim 7
Dependent Claim
49 words
A screw extracting device according to
Claim 4 wherein the tool includes a body portion and the trapping means includes a sleeve slidable on the body portion of the tool and arranged to trap the straight portion of the wire between the sleeve and the body of the tool.
Claim 8
Dependent Claim
13 words
A screw extracting. device according to
Claim 1 and substantially as described herein.
Claim 9
Dependent Claim
18 words
A screw extracting device substantially as described with reference to Figures 2 to 4 of the accompanying drawings.
Claim 10
Dependent Claim
18 words
A screw extracting device substantially as described with reference to Figures 2 to 4 of the accompanying drawings.
Claim 11
Dependent Claim
18 words
A screw extracting device substantially as described with reference to Figures 5 and 6 of the accompanying drawings.
Claim 12
Dependent Claim
18 words
A screw extracting device substantially as described with reference to Figures 5 and 6 of the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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