Patent US3520305A successfully refreshed from Google Patents.
EP0128039A2
Expired / Lapsed
EP
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Portable tools and handles therefor
Assignee: Kango Ltd
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Filing: 1984-06-04
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Granted: —
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Expires: 2004-06-04
Abstract
Abstract A handle for a portable tool has secured to it spindle 15 which is engageable in a nut 12 held captive in thetool casing. The spindle is encircled by a flange 18 having on one face ratchet teeth 27 which co-operate with complementary teeth 26 in a boss 25 on the casing, the flange being capable of axial movement relative to the spindle 15 against the bias of a spring 24 to allow the teeth 27 to ride over the teeth 26. The handle cannot become unscrewed accidentally but can be unscrewed when the flange is pressed outward against the spring 24.
Inventors
- 👤 Leslie Walter Ford
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:16
CPC Classifications
B; B25; B25G; B25G3/00; B25G3/02; B25G3/12; B25G3/30; B25F; B25F5/00; B25F5/02; B25F5/025; B25F5/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
A portable tool having on the external casing thereof a socket which is internally screw-threaded or which holds a nut captive therein, and a handle comprising a grip portion, a screw-threaded spindle projecting from the grip portion and engageable in the nut or screw-thread in the socket, characterised in that a locking member (20) is engaged on the spindle (15) so as to be non-rotatable relative to the spindle but spring-loaded so as to be movable axially relatively to the spindle from an end position in a direction towards the grip portion (14), said locking member being spring-loaded into said end position, the locking member (20) and the part of the casing member (10) about the socket being provided one with one or more axially-facing ratchet ramp faces (28) extending about the axis of the screw-thread and the other with one or more surfaces (26) which co-operate with the ratchet ramp face or faces to permit the locking member (20) and spindle (15) to be screwed into the socket or nut (12), the ramp face or faces (28) riding over said surface or surfaces (26) and deflecting the locking member axially against the spring-loading but to prevent unscrewing movement of the spindle.
Claim 2
Dependent Claim
202 words
A portable tool having on the external casing thereof a socket which is internally screw-threaded or which holds a nut captive therein, and a handle comprising a grip portion, a screw-threaded spindle projecting from the grip portion and engageable in the nut or screw-thread in the socket, characterised in that a locking member (20) is engaged on the spindle (15) so as to be non-rotatable relative to the spindle but spring-loaded so as to be movable axially relatively to the spindle from an end position in a direction towards the grip portion (14), said locking member being spring-loaded into said end position, the locking member (20) and the part of the casing member (10) about the socket being provided one with one or more axially-facing ratchet ramp faces (28) extending about the axis of the screw-thread and the other with one or more surfaces (26) which co-operate with the ratchet ramp face or faces to permit the locking member (20) and spindle (15) to be screwed into the socket or nut (12), the ramp face or faces (28) riding over said surface or surfaces (26) and deflecting the locking member axially against the spring-loading but to prevent unscrewing movement of the spindle.
Claim 3
Dependent Claim
85 words
A portable tool as claimed in claim 1 characterised in that the locking member (20) comprises a disc-like element with teeth (27) along its circumference the leading portions of the axial end of the teeth nearest the socket being chamfered to form said ramp faces (28) and the said co-operating surfaces (26) are formed on the internal cylindrical surface of a hollow boss (25) on the casing (10) and are in the form of teeth of complementary circumferential profile to those on said disc-like element.
Claim 4
Dependent Claim
81 words
A portable tool as claimed in claim 1 or claim 2 characterised in that the handle (14) is formed with a recess (16) in its end adjoining the spindle, said recess accommodating a stem (17) formed integrally with the locking member and being of sufficient axial length to permit a degree of axial movement of the locking member relative to the handle, and a compression spring (24) being disposed within said recess to bias said locking member into said end position.
Claim 5
Dependent Claim
21 words
A portable tool as claimed in claim 3 characterised in that the recess (16) and the stem (17) are both annular.
Claim 6
Dependent Claim
57 words
A portable tool as claimed in any one of claims 1 to 4, characterised in that a radial flange (18) projects outward beyond and is fixed to the locking member (20) at the axial side thereof remote from the spindle (15), for which flange is engageable to press the locking member against the bias of the spring-loading.
References Cited (Backward Citations)
No citation records indexed.
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