EP0521025A1 - Dispositif pour realiser sur une bande une operation selon un pas determine. - Google Patents
Dispositif pour realiser sur une bande une operation selon un pas determine.Info
- Publication number
- EP0521025A1 EP0521025A1 EP91905835A EP91905835A EP0521025A1 EP 0521025 A1 EP0521025 A1 EP 0521025A1 EP 91905835 A EP91905835 A EP 91905835A EP 91905835 A EP91905835 A EP 91905835A EP 0521025 A1 EP0521025 A1 EP 0521025A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block
- strip
- axis
- plane
- movement
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/18—Toggle-link means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/0007—Perforation of photographic films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4757—Tool carrier shuttles rectilinearly parallel to direction of work feed
- Y10T83/4763—Both members of cutting pair on same carrier
Definitions
- the invention relates to a device for carrying out an operation according to a determined pitch on a strip moving in a uniform and continuous manner, and in particular relates to the perforation of photographic films, cutting, embossing, stitching, notching of products in strips.
- Photographic films for example, carry, parallel to their edges, one or two rows of perforations allowing the film to be entrained in cameras, projection devices and in processing machines.
- the quality of the projection in particular the stability, of the images on the screen, depends closely on the quality of the perforations, that is to say on the constancy of their pitch and the precision of execution of each perforation.
- the required tolerances are extremely low, of the order of only a few microns on the finished perforation.
- perforators are usually used which cut one perforation at a time, on one or both edges, each time the film is immobilized between two successive movements of the film in the perforator.
- the film is intermittently driven into a perforation station by a reciprocating mechanism which has a claw which engages in a perforation made previously by an alternating punch which perforates the film.
- a spindle cooperating and moving with the punch is used.
- This pin is usually located between the punch and the claw at a distance from the punch equal to the pitch of the perforations. We make sure that the pin enters the perforation that was cut previously before the punch returns to the film contact; this is to place the film with great precision under the punch before making the perforation.
- This pin which fits without play in the perforation, corrects small defects in the positioning of the film due to the claw.
- patent FR 2 093 796 describes a perforator for punching perforations in a strip, in a regular pitch, comprising a punch holder block articulated in a horizontal axis on a die holder block, and also comprising a feeding mechanism for step by step driving the strip, said mechanism consisting of a claw driven by an arm mounted on an eccentric part, a perforation station for cutting the perforations and a receiving mechanism which cooperates with the strip just perforated to precisely dispose the perforating tape in the receiving station.
- a perforator in particular because of the arrangement of the punch and die holder blocks with respect to the direction of travel of the strip, can only make one hole at a time on each side of the strip. For this reason, the perforator described in the above-referenced patent allows rates not exceeding 30 to 0 m / min.
- patent FR 2 315 367 describes a device comprising a punch-carrying drum animated by a continuous rotational movement around its axis and bearing projecting, at its periphery, at least one punch fixed relative to the drum, and also comprising a tape transport support, of the endless type (preferably a drum with an axis parallel to that of the punch-carrying drum), disposed near the periphery of said punch-carrying drum and driven in a synchronous continuous movement with that of the latter, said endless support, on which is the strip to be perforated, carrying at least one matrix capable of cooperating with said punch during the joint movements of said drum and said support.
- Such devices can operate at very high rates, but require very precise and therefore very expensive mechanisms for this.
- tools such as cutting, embossing, pricking, perforating, notching tools.
- a device for carrying out an operation comprising a first block provided with a tool, describing alternatively, a short portion of arc of circle around a fixed horizontal axis parallel to the axis of travel of the strip so as to be able to periodically cooperate said tool with a member complementary to said tool, carried by a second block, said first block being connected to said second block at the level of said fixed axis, the two blocks thus fixed and suspended from a fixed frame being animated parallel to the plane of travel of said strip in a reciprocating movement of amplitude substantially greater than that of the movement of the first block around said fixed axis and of identical period.
- the reciprocating movement of amplitude A is ensured by means of a deformable structure comprising, in a plane orthogonal to the plane of the strip, two deformable parallelograms each having two sides parallel to said plane of the strip, one of these parallel sides being common to the two parallelograms and animated, in a first plane parallel to the plane of the strip, of a reciprocating movement of amplitude A / 2, the other parallel side of each of said two parallelograms being arranged in the same second plane, said other parallel side of the first parallelogram is fixed, that of the second parallelogram is movable and animated in said second plane with a back and forth movement of amplitude A, in phase with the amplitude movement of A / 2.
- FIG. 1 schematically represents an embodiment of the device according to the present invention
- FIG. 2 illustrates in general a device making it possible to perform a back-and-forth movement perfectly parallel to a plane
- FIG. 3A represents an exploded view of the device according to the present invention provided with a perforation tool
- FIG. 3B shows an exploded view of the device according to the present invention provided with a cutting tool
- FIG. 4 shows schematically a connecting rod-crank mechanism such as those used in the device according to the present invention
- FIG. 5 schematically represents an example of a device intended to control the movement of the upper block relative to the lower block
- FIG. 6 is a graph representing the variations in speed of the device for controlling the movement of the upper unit as a function of the angle produced by a power bar rotating at constant speed
- FIG. 7 is a graph representing the variations in speed of the reciprocating movement of the device according to the present invention in a plane parallel to the plane of the strip,
- FIG. 8 shows in more detail a device of the 4-bar type for controlling the movement of the upper block relative to the lower block
- - Figure 9 schematically shows a mechanism of the SCOTT-RUSSEL mechanism type used in the present invention
- FIG. 10 shows a SCOTT-RUSSEL mechanism as disposed in the device according to the present invention.
- the description of the invention will relate essentially to a perforating device and, to a lesser extent, to a cutting device, but it is obvious that its operation would remain unchanged if the device were provided with a tool intended for other types. operations such as embossing, stitching, punching, or notching, the movement required by all these operations being of the same type. All these devices mainly comprise two blocks, an upper block carrying a given tool and a lower block carrying a member complementary to said tool, the arrangement of these two blocks which are the subject of the detailed description which follows.
- FIG. 1 to which reference is now made schematically shows an embodiment of the device according to the present invention.
- This device mainly comprises an upper block
- the strip is arranged so as to form a short loop 5 not stretched in order to isolating the perforation device from the pulls caused by the unwinding of the strip and being able to compensate for differences in speed between said strip and said perforation device and which will be discussed in more detail later.
- the strip runs at a speed of approximately 100 m / min.
- tape drive mechanisms for example, of the toothed wheel type cooperating with the perforations previously made.
- Such mechanisms mainly comprise a first toothed wheel 6, a roller 7 intended to maintain a correct tension of the upstream belt of a second toothed wheel 8 serving in particular to isolate the perforating device from the variations in speed generated by the devices (such as the photo reel mounting towers) placed downstream of the hole punch.
- the punch block is fixed to the die block at the level of a horizontal axis 9 fixed in space and parallel to the axis of travel of the strip, said fixed horizontal axis also corresponding to the axis of articulation. of the punch block 1 relative to the die block 2 so that the punch block can alternately describe a short portion of an arc around said fixed axis 9 in order to be able to periodically cooperate the punches with the matrix when the tape is scrolled.
- connection thus produced between the two blocks is, according to one embodiment, an elastic connection comprising two sets of non-coplanar leaf springs 10, 11.
- Each leaf spring is, at one of its ends, fixed by means suitable for the punch holder block 1 and, at the other of its ends for the die holder block 2.
- two lateral blades are arranged in a first plane parallel to the plane of the strip and a central blade is arranged in the plane perpendicular to said foreground. It is obvious that the number of blades of each of the sets may be different from what is shown in FIG. 1, as well as the angle between the two planes can be different from 90 ° provided that the punch block always rocks around a fixed axis.
- Such a connection actually behaves as if the punch holder block was fixed on a hinge in a fixed position.
- This type of articulation differs from the usual hinges by three important points. First, there is no play in this joint. Secondly, there is no need for lubrication and therefore maintenance is reduced, as well as the danger of oil spray on the belt, dust accumulation is minimized. Thirdly, the springs do not produce a friction torque but, on the contrary, develop a return torque practically proportional to the angle by which they flex.
- the blades are made of steel and their thickness can vary between 2 and 3 mm and preferably is of the order of 2.5 mm, for a free length of blade (that is to say, between the two fixing points) of approximately 15 to 20 mm.
- FIG. 2 illustrates in general the device making it possible to move, parallel to the movement of the plane of the strip, the assembly formed by the punch holder block and the die holder block.
- the device comprises in a plane orthogonal to the plane of the strip, two deformable parallelograms 12, 13, of identical height each having two sides 14, 15; 15, 16 parallel to said plane of the strip, one of these parallel sides 15 being common to the two parallelograms and animated, in a first plane parallel to the plane of the strip, with a reciprocating movement of amplitude A / 2.
- the other parallel side of each of the two so-called parallelograms is arranged in the same second plane.
- Said other parallel side 14 of the first parallelogram 13 is fixed, that 16 of the second parallelogram 12 is movable and animated in said second plane with a back and forth movement of amplitude A in phase with the movement of amplitude A / 2.
- the mobile side 16 describing the movement of amplitude A is connected to a first system of connecting rod-crank whose radius of the crank is R and whose length of the connecting rod is L.
- the mobile side 15 common to the two parallelograms, and describing a movement of amplitude A / 2 is connected to a second rod-crank system whose radius of the crank is R / 2 and whose length of the rod is L / 2, the two cranks rotating at the same angular speed and , preferably in phase opposition.
- the other two sides of each of the two parallelograms are made of flexible material. With such a device, the amplitude movement A is always carried out in the same plane due to the opposite effects resulting from the movements applied to each of the two said parallel sides, as described above.
- the suspension mechanism shown in the device of Figure 1 is based on the principle mentioned with reference to FIG. 2, and comprises a first 17 and a second flexible element, substantially identical, arranged on either side of the perforation device in the plane orthogonal to said fixed horizontal axis and defining each a central blade 20 and two side blades 19, 21 of identical height.
- said joining element is substantially planar and arranged parallel to the plane of the strip inside the perforating device, the length of said joining element corresponding substantially to the length of the flexible elements.
- the junction element is arranged relative to the chassis so that it can be at least partially free in translation in the direction of travel of the strip.
- each of the flexible elements has their upper end secured to the frame 23, while the upper part of the central blade of each of the elements is secured to the die-holding block 2, the two flexible elements thus arranged defining, when two parallel surfaces are not stressed in translation.
- the height of these flexible elements is of the order of 12.7 cm and the width of the central blade 20 is equal to the sum of the widths of the side blades 19, 21.
- the assembly consisting of the punch holder block as well as the die holder block and arranged in the manner mentioned above is capable of moving in a reciprocating movement perfectly parallel to the travel plane Of the band.
- the upper part of the central blade of one of the flexible elements is coupled to a first connecting rod-crank device 25 whose crank describes a radius R and whose connecting rod is of length L, the lower part of said central blade being, for its part, coupled to a second connecting rod-crank device 24 whose crank describes a radius R / 2 and whose connecting rod is of length L / 2, said cranks being driven in rotation by means of a shaft 26, 27 rotating at the same angular speed, and, for reasons of balance, in phase opposition.
- the two connecting rod-crank devices are located in the same plane, substantially in the center of the central blade.
- Such a device allows the perforator to have a movement perfectly parallel to the plane of travel of the strip between the punches and the die. This movement is perfectly balanced, generates practically no vibration and is therefore relatively silent, the balance being achieved by counterweights 60 suitably chosen and appropriately arranged.
- the counterweights disposed on each of the eccentrics are identical and form an angle of 180 ° with said eccentrics.
- it is desirable unlike what is shown in FIG. 2, to have the axes carrying the counterweights substantially one below the other, the common parallel side with the two parallelograms being extended appropriately.
- the rod-crank devices are produced by means of an eccentric mechanism.
- a connecting rod-crank mechanism is shown schematically in FIG. 4.
- L represents the length of the connecting rod
- R represents the length of the crank (or of the eccentric)
- ⁇ being the angle produced by the crank
- ⁇ being the angle produced by the connecting rod.
- the R / L ratio must be less than 0.25 and, according to a preferred embodiment, is of the order of 0.1. According to this same embodiment, R is of the order of 9.5 mm, L is of the order of 105.5 mm.
- Fig. 3A to which reference is now made shows an exploded view of a perforating device according to the present invention.
- the description which will be made of this figure will endeavor to detail more particularly the means carrying out the perforation in itself, namely the punches and the matrix.
- a block 33 carrying the punches 34 is fixed to the upper block 31, for example by screws.
- the punches are arranged in the form of two rows each comprising at least two punches and arranged opposite one another parallel to the axis of the strip. The two rows are spaced so as to be able to perforate the two edges of said strip at a determined pitch.
- Each row of punches is provided, at its end opposite to the arrival edge of the strip, with at least one guide pin (not shown) of length greater than that of the punches and arranged so as to engage in one of the perforations made previously and just before the punches come into contact with the film to perforate it in order to have the punches precisely on said strip.
- each row has twelve punches and three guide pins, but it is obvious that any other arrangement of said punches and said guide pins is possible.
- the mechanism for controlling the movement of the punch block around said fixed horizontal axis must be such as to minimize the engagement time between the punches and the strip. In fact, during this engagement time, corresponding to the actual perforation time, it is necessary to have very precise synchronization between the movement of the strip and the movement of the perforator so as to have the speed of the strip substantially equal to the horizontal speed of the punches during perforation.
- the movement of the punch block around said fixed horizontal axis is achieved by means of a device with two rotary axes in which a uniform rotation speed of a motor axis produces a speed varying continuously during each revolution of the the axis controlling the movement of the punch block, said uniform speed of rotation of the motor axis being equal to the speed of rotation of the connecting rod-crank devices controlling the movement back and forth, parallel to the plane of the strip, of said perforation device.
- this device with two rotary axes is, as shown schematically in FIG. 5, of the 4 bar type.
- a first bar OA arranged on the motor axis O is rotated at constant speed. According to one embodiment, this speed is of the order of 1600 revolutions / min.
- the second bar O 2B is on the control axis O2 and rotates at variable speed; a third bar AB connects the free ends of the first two bars, the fourth bar being constituted by the fixed distance OO separating the two axes.
- ⁇ the angle made by the first bar OA
- ⁇ the angle made by the second bar arranged on the control axis O 2.
- the dimensions of the bars must be such that they verify the following relationships:
- Figure 8 shows in more detail this device of the 4-bar type.
- the control axis O is connected to the punch holder block by means of a connecting rod-crank mechanism 40 which may be of the eccentric type.
- the length of the eccentric is of the order of 1.8 mm.
- the rod 40 controlled by said eccentric is connected to the punch block at a point located between the fixed horizontal axis and the rows of punches so that the punches describe a substantially vertical movement whose l amplitude is of the order of 4.5 mm.
- the punch block substantially describes an asymmetrical ellipse with respect to a horizontal axis.
- the motor axes controlling the horizontal movement as well as the motor axis controlling the vertical movement are driven at the same speed by means of a single motor.
- Fig. 6 represents the variations in the angular speed of the bar OB as a function of the angle ⁇ produced by the bar OA disposed on the motor axis and rotating at continuous speed, said continuous speed being represented by the straight line parallel to the abscissa axis.
- the average value of the angular speed of the OB bar is of course equal to the angular speed of the motor axis, but said speed of the bar O 2B is, in instantaneous value, sometimes higher than the speed of the motor axis, sometimes lower.
- the eccentric controlling the movement of the punch block will of course be chosen and arranged so that the perforation actually takes place for a period during which the speed of the bar OB is maximum, (delimited by the two vertical lines in FIG. 6), this period having to coincide with the period when the speed of the reciprocating movement of the perforator is substantially identical to that of the strip.
- Fig. 7 to which reference is now made is a graph representing the speed of the reciprocating movement of the perforator over a period portion of the movement of the crank controlling said movement.
- the angle ⁇ made by the crank is plotted on the abscissa and the speed of horizontal movement of the perforator on the ordinate (in% relative to the maximum speed of said movement).
- the uniform speed of movement of the film is also represented by a straight line parallel to the axis of the corresponding abscissa in this particular embodiment at a speed of 100 m / mm.
- the angle ⁇ between the moment when the guide pins reach the stripper block and the moment when said guide pins leave said stripper block is also called the engagement angle and according to this embodiment is of the order of 70 °.
- the speed of the strip must be substantially identical to the horizontal speed of the hole punch. Between these two points, the short period during which the horizontal speed is greater than the speed of the strip is compensated for by making the strip, just upstream of the perforator, make an untensioned loop.
- This angle of engagement of approximately 70 °, also corresponds to an angle of approximately 70 ° of the bar connected to the motor axis O of the four-bar mechanism mentioned above.
- This angle of 70 ° for a drive speed at 1600 rpm represents a duration of around 7 ms. As shown in FIG.
- the perforation device comprises, between the punch holder block and the die holder block, a mechanism derived from a SCOTT-RUSSELL mechanism and consisting of an X-shaped member, 50, so that it allows movement of the punch block around the fixed horizontal axis but prevents any lateral movement of one of the blocks relative to the other, thereby increasing the rigidity of the system.
- a classic SCOTT-RUSSELL mechanism is shown in solid lines in Figure 9. Such a device forces point P to move in a movement perpendicular to the line carried by PX and P3.
- the broken lines represent a variant of the SCOTT RUSSELL mechanism allowing, by mirror effect, to obtain the effects of two SCOTT RUSSELL mechanisms. Such an arrangement increases the resistance to lateral movement between the blocks.
- FIG. 10 schematically shows an example of the arrangement of such a mechanism between the punch holder block and the die holder block.
- the dimensions of the device according to the present invention are, for the embodiment shown in Figure 1, of the order of 41 cm x 37 cm x 25 cm.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9003697 | 1990-03-19 | ||
FR9003697A FR2659589B1 (fr) | 1990-03-19 | 1990-03-19 | Dispositif pour realiser sur une bande une operation selon un pas determine. |
PCT/FR1991/000191 WO1991014550A1 (fr) | 1990-03-19 | 1991-03-11 | Dispositif pour realiser sur une bande une operation selon un pas determine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0521025A1 true EP0521025A1 (fr) | 1993-01-07 |
EP0521025B1 EP0521025B1 (fr) | 1994-12-28 |
Family
ID=9395015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91905835A Expired - Lifetime EP0521025B1 (fr) | 1990-03-19 | 1991-03-11 | Dispositif pour realiser sur une bande une operation selon un pas determine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5263393A (fr) |
EP (1) | EP0521025B1 (fr) |
JP (1) | JPH05505768A (fr) |
DE (1) | DE69106350T2 (fr) |
FR (1) | FR2659589B1 (fr) |
WO (1) | WO1991014550A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0733950A1 (fr) * | 1995-03-24 | 1996-09-25 | Eastman Kodak Company | Appareil pour couper un raccordement et pour la remise en forme d'un film |
CN113878629B (zh) * | 2021-09-24 | 2023-03-10 | 温州市众邦拉链有限公司 | 一种拉链带裁切设备 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US438239A (en) * | 1890-10-14 | Machine | ||
US1031468A (en) * | 1910-10-04 | 1912-07-02 | Nicholas Power | Perforating-machine. |
US1179885A (en) * | 1915-03-16 | 1916-04-18 | Wiseman & Davis Perfect Perforating Film Machine Company | Picture-film perforator. |
US1291524A (en) * | 1917-03-02 | 1919-01-14 | Bell & Howell Co | Apparatus for perforating cinematographic films. |
US1416168A (en) * | 1920-07-20 | 1922-05-16 | Charles R Carleton | Perforating machine |
US1782570A (en) * | 1927-07-06 | 1930-11-25 | Bell & Howell Co | Strip-perforating machine |
US2220523A (en) * | 1938-05-23 | 1940-11-05 | Kaganski Nochoum | Method and apparatus for renewing the perforations of motion picture films |
US2293264A (en) * | 1941-05-24 | 1942-08-18 | Freeland H Leslie | Punch and die set holder |
GB700900A (en) * | 1951-07-07 | 1953-12-09 | Ontwikkelingmij Polynorm Nv | A shearing device for cutting lengths from continuously supplied bars and the like |
US2841818A (en) * | 1955-08-25 | 1958-07-08 | Griffith Laboratories | Meat-perforating apparatus |
US3656384A (en) * | 1970-05-27 | 1972-04-18 | Eastman Kodak Co | Intermittent high speed perforator |
US3753521A (en) * | 1970-05-27 | 1973-08-21 | Eastman Kodak Co | Intermittent high speed perforator |
DE2210699C2 (de) * | 1972-03-06 | 1973-11-29 | Schloemann Ag | Fliegende Querteilschere |
FR2315367A1 (fr) * | 1975-06-26 | 1977-01-21 | Kodak Pathe | Perfectionnements aux dispositifs de perforation de bandes, notamment de films photographiques et cinematographiques |
JPS5315684A (en) * | 1976-07-29 | 1978-02-13 | Fuji Photo Film Co Ltd | Device for cutting web |
DE2805013C3 (de) * | 1978-02-06 | 1985-10-03 | Heinz Dr.-Ing. 4600 Dortmund Kreiskorte | Presse mit geringem Stößelhub |
EP0051588B1 (fr) * | 1980-01-17 | 1986-11-05 | JACKSON, Brian Laurence | Entrainement de microtomes rotatifs |
SE424023B (sv) * | 1980-10-27 | 1982-06-21 | Lkb Produkter Ab | Anordning vid en mikrotom |
DE3339742A1 (de) * | 1983-11-03 | 1985-05-23 | Ronald Victor Rambouillet Percival | Vorrichtung zum lochen von duennen folien, insbesondere papier |
JPH01271197A (ja) * | 1988-04-20 | 1989-10-30 | Konica Corp | フィルム穿孔機 |
-
1990
- 1990-03-19 FR FR9003697A patent/FR2659589B1/fr not_active Expired - Fee Related
-
1991
- 1991-03-11 US US07/927,501 patent/US5263393A/en not_active Expired - Lifetime
- 1991-03-11 EP EP91905835A patent/EP0521025B1/fr not_active Expired - Lifetime
- 1991-03-11 WO PCT/FR1991/000191 patent/WO1991014550A1/fr active IP Right Grant
- 1991-03-11 JP JP91505794A patent/JPH05505768A/ja active Pending
- 1991-03-11 DE DE1991606350 patent/DE69106350T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9114550A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE69106350T2 (de) | 1995-07-13 |
WO1991014550A1 (fr) | 1991-10-03 |
DE69106350D1 (de) | 1995-02-09 |
JPH05505768A (ja) | 1993-08-26 |
US5263393A (en) | 1993-11-23 |
FR2659589B1 (fr) | 1992-06-12 |
EP0521025B1 (fr) | 1994-12-28 |
FR2659589A1 (fr) | 1991-09-20 |
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