Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1995-11-20
1998-10-06
Meislin, D.S.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
811778, 81440, B25B 1346, B25B 2316
Patent
active
058161198
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a tightening tool of the type including a driving part and a driven part which, in a first position of use, have a common axis of rotation, means for tilting the driving part with respect to the driven part, and locking means which can adopt a position for positive locking of the driving part in a position coaxial with the driven part as well as a position for freeing the tilting means. It applies in particular to screwdrivers.
In a known screwdriver of this type (FR-A-2,570,975), the driving part forms the entire handle, and the driven part consists of the blade of the screwdriver. To allow tilting, the handle has a longitudinal slit, which severely detracts from the comfort with which the handle is grasped in the first position of use.
SUMMARY OF THE INVENTION
The object of the present invention is to provide economic and reliable means which make it possible to exert either a relatively low torque or a much higher torque on a component, making use of a tool which is identical to the conventional tools in the first position of use. In particular, in the case of a screwdriver, this involves making it possible to screw-in quickly, followed by vigorous tightening at the end of the screwing-in operation, or alternatively, loosening of a screw, followed by quick unscrewing.
To this end, the subject of the present invention is a tightening tool of the aforementioned type, characterized in that: of the tool; part of the handle of this tool; each other as far as a predetermined position of separation in order to free the tilting means; one of the two parts and able to move in a longitudinal slot of the other part equipped with a stop; and driving part and the driven part.
The tightening tool according to the invention may include one or more of the following characteristics: part are in mutual contact via their respective end faces; connection and the transverse pin is integral with the female part of the plug and socket type connection; parts by means of a non-circular shape; planar surfaces which are parallel to a predetermined plane of tilting; increase the friction between the two parts, driving and driven, during their coaxial displacements; of revolution. especially a ratchet mechanism; and blade holder above this device.
BRIEF DESCRIPTION OF THE DRAWINGS
One embodiment of the invention will now be described in relation to the appended drawings, in which: invention, in a locked position of a tilting mechanism; position of the tilting mechanism; of FIG. 3, respectively; mechanism, with the handle in the process of being tilted, the view being taken in the direction of the arrow VI of FIG. 2; and on a larger scale.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIGS. 1 to 6, the tightening tool is described as applied to a screwdriver 1. This screwdriver 1 includes a handle 2 bearing a blade 3 and, in a normal position of use, has an overall axis X-X' which is assumed to be vertical.
The handle 2 of the screwdriver 1 can be broken down into a driving part or grip 4, and a driven part or blade holder 5.
The grip 4 includes an outer jacket 6 symmetrical about the axis X-X', of a form suitable to be easy for an operator to grasp. The jacket 6, for example made of plastic, has an elongate shape and has two end faces, an upper one 7 and a lower one 8 which are planar and horizontal.
The jacket 6 surrounds a cylindrical core 9 which is, for example, made of steel. An upper end 10 of the core 9 lies flush with the end 7 of the jacket 6, and a lower part 11 projects below the end 8 of the jacket.
Over a portion less than of the order of one third of its length, the core 9 has a blind axial hexagon bore 12 as shown in FIG. 4. The bore 12 markedly penetrates the jacket 6 and is downwardly open.
FIG. 5 shows that the projecting lower part 11 of the core 9 has diametrically opposed slits is slit along the length of the bore 12, so as to form two legs 13 and 14 which are diametrically opposed and symmetric with respect to the axis X-X'. These legs
REFERENCES:
patent: 2512232 (1950-06-01), Hart
patent: 2572444 (1951-10-01), Carden
patent: 3068728 (1962-12-01), Shepherd
patent: 4597478 (1986-07-01), Bodnar
patent: 5069091 (1991-12-01), Bramsiepe et al.
patent: 5101696 (1992-04-01), Neff
patent: 5450775 (1995-09-01), Kozak
Facom
Meislin D.S.
LandOfFree
Tightening tool, especially screwdriver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tightening tool, especially screwdriver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tightening tool, especially screwdriver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-68095