EP0986452A1 - Instrument support d'une lame de travail amovible - Google Patents
Instrument support d'une lame de travail amovibleInfo
- Publication number
- EP0986452A1 EP0986452A1 EP98928397A EP98928397A EP0986452A1 EP 0986452 A1 EP0986452 A1 EP 0986452A1 EP 98928397 A EP98928397 A EP 98928397A EP 98928397 A EP98928397 A EP 98928397A EP 0986452 A1 EP0986452 A1 EP 0986452A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- housing
- handle
- rear part
- spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002184 metal Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B9/00—Blades for hand knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B5/00—Hand knives with one or more detachable blades
Definitions
- the present invention relates to an instrument of the type intended for gripping working blades, or tools, interchangeable and / or disposable, such as in particular ear curettes or podiatric blades.
- the object of the present invention is to propose an instrument of the aforementioned type which is equipped with simple and inexpensive working blades to produce, as well as a blade holding device which ensures a good grip of the latter.
- the present invention thus relates to an instrument, in particular of podiatry, comprising a tool, of interchangeable and / or disposable type, of which at least the rear part forms a blade which is fixed on a handle by securing means, the front part of the handle being hollowed out of a housing capable of receiving the blade, characterized in that: the blade forms, on at least its rear part, an axial and longitudinal bowl comprising hooking means substantially transverse,
- the securing means consist of a pin, which passes through a longitudinal bore of the handle, and which ends at one of its ends by a gripping element and at its other end, on the side of the bowl, by a locking key able to cooperate with said attachment means for applying, when the spindle is rotated on itself, on the one hand the rear posterior part of the blade against the bottom of the housing and on the other hand the external face of the blade, against a wall of the housing.
- said hooking means consist of transverse ribs
- the spindle locking key consists of a threaded part, which is such that, when the rear part of the blade is in place in the housing, the threaded part engages with the ribs, to apply, when the spindle is screwed, on the one hand the rear posterior part of the blade against the bottom of the housing and on the other hand the external face of the blade against a wall of the housing.
- the transverse ribs will preferably be arranged on the walls of the bowl and will form a thread.
- the means for hooking the blade consist of a substantially transverse slot forming a cam and the locking part of the spindle consists of a lug which is arranged transversely to a end of the spindle, and which is such that, when the rear part of the blade is in place in the housing, the lug can come into engagement with the rear wall of the slot to apply, when the spindle is turned, the rear part of the blade against the bottom of the housing.
- the handle of the instrument will consist of two parts, namely an anterior part and a posterior part which will be free in rotation and fixed in translation, one with respect to
- connection of these two parts may be achieved by a pin which will be integral with the rear part and whose front end will form a threaded part intended to come into engagement with the attachment means provided on the blade.
- the present invention also relates to a working tool in particular of the disposable type intended to be fixed on a handle, characterized in that it is hollowed out with an axial and longitudinal bowl, at least the rear part of which comprises hooking means. substantially transverse.
- This tool can be formed of a folded metal sheet and cut so as to form an axial and longitudinal bowl.
- the attachment means will consist of transverse ribs capable of coming into engagement with a threaded part of the handle 3 of corresponding pitch.
- the blade may include, on at least its rear part, guide wings.
- Figure 1 is a perspective view of a tool formed from a blade of an instrument according to the invention.
- Figure 2 is an axial and longitudinal sectional view of an instrument according to the invention.
- Figure 3 is a cross-sectional view of the instrument according to the invention shown in Figure 2 along line III-III thereof.
- FIG 4 is a perspective view of the instrument according to the invention shown in Figures 1 to 3, equipped with its working blade.
- Figure 5 is a cross-sectional view of the semi-threaded end of a blade holding pin.
- Figure 6 is a partial perspective view of an alternative embodiment of the invention.
- Figure 7 is an axial and longitudinal sectional view of an embodiment of an instrument according to the invention.
- FIG. 8 is a sectional view on a larger scale along the line VIII-VIII of FIG. 7.
- FIG. 9 is a perspective view of the working blade which is used in the instrument represented in FIGS. 7 and 8.
- the instrument essentially consists of three elements, namely a blade 1, a handle 3 and a spindle 5.
- the blade 1, which in this case constitutes a curette, is formed from a sheet of stainless steel cut into the shape of an isosceles triangle.
- the base thereof constitutes the rear part 7 of the blade and its top constitutes a working part forming a ring 9.
- the blade 1 is deformed over almost its entire length, from its rear part 7 to the ring 9 , so as to form a longitudinal bowl 11 of semi-circular cross section which is thus framed on either side by two triangular wings 15.
- the rear inner part of the bowl 11 is machined to form transverse ribs 13.
- the shape of this blade 1 is such that it is possible to form it entirely (including the ribs 13) by striking in a single pass.
- the handle 3 consists of a metal bar, also made of stainless steel, which has the shape of a cylinder whose base is hexagonal. It comprises, on its front part, a housing 16 intended to receive the rear part 7 of the blade 1. This housing 16 is formed by a radial slot 17, intended to receive the wings 15, and by a semi-central recess circular 19 intended to receive the groove formed by the external part of the bowl 11.
- the handle 3 is pierced over its entire length with a central and longitudinal hole 21 intended to receive the pin 5.
- the latter consists of a rod 22 which ends at one of its ends by a thread 25, the pitch of which is close to that of the transverse ribs 13, so as to be able to come into engagement with these, and to its other end by a gripping element 23 whose shape and transverse dimensions are close to those of the handle 3.
- the spindle 5 being in position in the longitudinal hole 21 of the handle 3, the base 7 of the blade 1 is introduced into the housing 16 and the spindle 5 is screwed, using the 'gripping element 23, which has the effect of engaging the thread 25 with the ribs 13.
- This engagement once ensured, we continue to screw the spindle 5 until that the gripping element 23 comes into abutment with the rear part of the handle 3, which causes, when the screwing is continued, the recoil of the blade 1 and the application of the base 7 thereof against the bottom of the housing 16.
- the threaded part 25 of the latter exerts on the bowl 11 a force directed along the arrow A which has the effect of applying the outer face of the wings 15 of the blade 1 against the lower transverse wall (in FIG. 3) of the radial slot 17.
- the blade 1 is thus applied both against this wall and against the bottom of the radial slot 17 which makes it possible to obtain excellent retention of the latter when the handle 3 is tightened.
- the present invention is particularly advantageous in that it makes it possible to produce blades of simple constitution by a simple and inexpensive manufacturing process, such as in particular the striking in a single pass, which moreover ensures such blades very support firm and very reliable.
- the bowl 11 which includes the ribs 13 serving to ensure the holding function of the blade 1 on the handle 3 fulfills a second function which is, by forming a groove on the opposite face, to improve the rigidity of blade 1.
- the means for holding the working blade on the handle can, of course, be other than screwing means.
- the blade 1 can thus comprise, at its rear part, a light 27 of the "bayonet" type, forming a cam, that is to say that the light 27 extends substantially transversely between two extreme positions B and C, position C being closer to the posterior part of blade 1 than position B.
- the end of the spindle 5 'opposite the gripping element 23 has a radial lug 29 whose diameter is slightly less than the width of the slot 27.
- the instrument according to the invention is shown as a variant in FIGS. 7 to 9. It is essentially formed by a body 3 made in two parts, namely a rear part 3a and a front part 3b whose length is much less than that of the part 3a.
- the two parts 3a and 3b forming the handle 3 are interconnected by connecting means so that they are free in rotation and integral in translation.
- the rear end of the spindle 22 ' has a threaded part 30 by which it is screwed into a threaded hole 31 provided on the rear part 3a of the handle 3.
- the threaded part 30 is followed, in the direction of the front part of the 'Tool, by a cylindrical portion 32 of larger diameter, which is adjusted in a housing of appropriate size on the one hand from the rear part 3a and on the other hand from the front part 3b.
- the cylindrical part 32 is itself followed by another cylindrical part 34 of larger diameter forming a shoulder which takes place in a cylindrical housing 36 which opens onto the front end of the tool.
- the pin 22 ' is secured in rotation to the part 3a of the handle, by any suitable means, such as for example a pin, or, as shown in FIG. 7, by welding means which are produced from the bottom of a radial hole 38 made in part 3a.
- the blade 1 is of the same type as that shown in FIG. 1 with the difference that it has two lateral wings 40 which, on the one hand, facilitate the guiding of the blade, when the latter is presented in front of the front face of the blade. tool, to ensure its fixation.
- the wings 40 also provide, when the blade 1 is in the fixing position on the tool, improved support thereon, especially when the user exerts a force on the blade 1 lying substantially in the plane of this one.
- the front part 3b of the handle 3 is machined with a radial slot 17 which extends over a length £ from its front end so that it ends before the shoulder 34.
- Such a mode of implementation has a certain number of advantages and in particular the fact that the blade 1 can be arranged in two positions, namely on one side or the other of the threaded part 25.
- the shoulder 34 being adjusted in the cylindrical housing 36, the threaded part 25 ′ is thus perfectly held axially and is able to apply the external face of the blade 1 against the walls of the slot 17.
- the blade holding spindle is an integral part of the tool.
- the present invention can be applied to all fields in which interchangeable and / or disposable blades are used and where they must be effectively maintained with means allowing them to be put in place and removed easily and fast.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9706662A FR2763878B1 (fr) | 1997-05-30 | 1997-05-30 | Instrument support d'une lame de travail amovible |
FR9706662 | 1997-05-30 | ||
PCT/FR1998/001090 WO1998053964A1 (fr) | 1997-05-30 | 1998-05-29 | Instrument support d'une lame de travail amovible |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0986452A1 true EP0986452A1 (fr) | 2000-03-22 |
Family
ID=9507421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98928397A Withdrawn EP0986452A1 (fr) | 1997-05-30 | 1998-05-29 | Instrument support d'une lame de travail amovible |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0986452A1 (fr) |
FR (1) | FR2763878B1 (fr) |
WO (1) | WO1998053964A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI20040163A1 (it) * | 2004-07-02 | 2004-10-02 | Emme Effe System Di Magrin Fra | Utensile per dispositivi per la cosmesi |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR355685A (fr) * | 1905-06-28 | 1905-11-09 | Georges Thuillier | Lames nervurées en tole emboutie se fixant dans un manche à la manière des plumes |
FR408340A (fr) * | 1909-10-27 | 1910-03-24 | Mark Howard Sterling | Couteau à lame détachable |
FR473302A (fr) * | 1913-09-16 | 1915-01-08 | Societe Generale De Coutellerie Et Orfevrerie | Lame de grattoir ou de canif perfectionnée |
US2267325A (en) * | 1938-10-17 | 1941-12-23 | Russell Harrington Cutlery Com | Cutlery article |
US2958943A (en) * | 1957-05-20 | 1960-11-08 | Jr Emil Koe | Slicing knife |
US3448741A (en) * | 1967-01-20 | 1969-06-10 | Edwards Lab Inc | Endarterectomy instrument |
-
1997
- 1997-05-30 FR FR9706662A patent/FR2763878B1/fr not_active Expired - Fee Related
-
1998
- 1998-05-29 WO PCT/FR1998/001090 patent/WO1998053964A1/fr not_active Application Discontinuation
- 1998-05-29 EP EP98928397A patent/EP0986452A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9853964A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1998053964A1 (fr) | 1998-12-03 |
FR2763878A1 (fr) | 1998-12-04 |
FR2763878B1 (fr) | 1999-08-20 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17Q | First examination report despatched |
Effective date: 20010530 |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20020119 |