MXPA97010498A - Control of operating times of utensils, which has a camera that operates at speedsmultip - Google Patents

Abstract

The present invention relates to a control of operating times of utensils comprising: a group of output terminals, and a cam having defined therein 1) a first set of cam profiles that controls the time in which they are generated output signals on the group of output terminals, and 2) a second set of cam profiles that control the speed of said output

Description

CONTROL OF OPERATING TIMES OF UTENSILS WHICH HAS A LEVR UNR OPERATING R MULTIPLE SPEEDS CRMPO DE LR INVENCIÓN l: n - general terms, the present invention refers to time control devices, and more specifies the time of operation of utensils that has a cam that is operated at speeds iiiul -ipJ.es.

BACKGROUND OF THE INVENTION The control of utensil operation times is commonly used on many household utensils, such as dishwashers, clothes washers, and clothes dryers. The control of utensil operation times controls the ut-ensí l operations by activating and deactivating switches that start and stop different working operations in the utensil, such as a rinsing operation < je in the case of a dishwasher. The switches in the control of utensil operation times are activated and deactivated by The interaction of a cam surface defined in a cam of the utensil-time control and a cam follower that is associated with a particular switch. A control of common utensil operation times or a control of interval transmission times. Does this type of time control typically include? a number of cams < Rippeas assembled vo ii ally that are driven by means of a ratchet and ratchet assembly .. Each of the lev, includes a cam profile defined on an external surface thereof that selectively activates one or more switches < on + rolling with it diterervtes working operations of the utensil. In operation, the ratchet transmits the ratchet at predetermined intervals. Therefore, the ratchet and thus the cams attached to it, are in motion during a first period. Then, the ratchet is at rest for a second period until the next movement thereof driven by the transmission ratchet. For example, a contour of one minute interval times may cause the rattle to be in motion during the second period. five seconds and then at rest for S5 seconds. It is convenient to control a complete cycle of the apparatus with a rotation of r) 6f) ° of the l l of the role, of utensils of utensil operation. This characteristic allows the user to have a small number of parts, since only one cam would be necessary in the time control. Rdemas, this feature allows the simplification of the manual adjustment of the time control of the utensil operation. This is true, since any operational segment of the apparatus cycle can be determined by manually rotating a fastening knob, which is engaged in cam operation, a rotational distance of less than Jhü. "However, controlling all the cycle of the apparatus with a JhO "rotation of the cam, the amount of surface; The cam that is available to activate and deactivate switches within the control of utensil operation periods is limited. This becomes a problem since it is convenient to quickly turn the cam to increase the accuracy of the time control. Have you specifically, La time control capability for rolling-the accuracy of regulation of the duration time of a work operation between the point of time at which the work operation begins and the point of time at which it ends. work operation, is directly proportional to the speed of rotation of the cam. This is true since dimensional errors (for example, manufacturing error) and design disturbances associated with the components of the time con-rol (for example cam profiles and cam followers) remain constant regardless of the speed of Cam rotation. For example, if the location of a fall along the cam profile associated with the activation of a particular job operation is placed 20 below the cam profile by a manufacturing error, the cam follower will be required to scroll through the cam profile. the additional 20 an + is from the '51 fall, delaying both the activation of the operation "Je trabajo. If the cam is turned at a speed of 5o per second, the activation of the working operation will be delayed by a few seconds, however, if the cam is turned at a speed of 4o per minute, the activation The operation of the work will be delayed only half a second, improving with it the examination of the count of times. Of course, in the operation of a time control of utensil operation, it should be appreciated. that there is a tension in the desire to quickly turn a cam of a tool operation time control, so as to improve LC) the accuracy of the time control, and the desire to slowly turn the cam of the tool operating time, so that the complete cycle of the apparatus is controlled by a rotation of the cam of 3ñ0 °. Therefore, a time control of utensil operation that turns a cam at a high speed when activating or deactivating switches within the time control of utensil operation to more accurately control the critical work operations, but that rotate the cam at a low speed when the role of t lempos utensil operation is activating or deactivating switches of work operations that are not critical, so as to conserve space on the surface of the cam.

BRIEF DESCRIPTION OF THE INVENTION In accordance with an embodiment of the present invention, a control of utensil operation times is provided. The control of utensil operation times includes a group of output terminals and a cam. Asleep in the l ova this (1) a first set of cam profiles that controls the time in which the output signals are generated on the group of output terminals, and (2) a second set of cam profiles that controls the speed of the cam. In accordance with a second embodiment of the present invention, a control of utensil operation times is provided. The control of utensil operation times includes a motor, a first gear assembly that is mechanically driven to the motor, and a second gear assembly that is also mechanically coupled to the motor. l '? Operational tool timing control also includes a Cam that is driven by (L) the first gear rack during a first period, and (2) the second gear assembly during a second period. In accordance with a third embodiment of the present invention, a method of operating a utensil operation time control is provided. The method includes the steps of; (1) provide a cam that has a first set of cam profiles defined in the system, and a second set of cam profiles, (?) Control The generation of signals, over a group of terminates output of the time control of tool operation with the first set of profiles of the cam, and (3) contio the speed of the cam with the second set of cam profiles. Therefore, an object of the present invention is to provide a new and useful control of tool operation times 10. Another object of the present invention is to provide an improved utensil operation time control. A further object of the present invention is to provide a new and useful method of operation of a utensil operating time control. An object of the present invention is also to provide an improved method of operation of a utensil operation time control. Another object of the present invention is to provide a control of utensil operation times which rotates a cam at a high speed when it activates or deactivates switches associated with critical work operations of the implement, and rotates the valve at a speed low when (L) activates or deactivates switches associated with non-critical work operations or (2) conserves the space of the cam without activating- or disabling switches. Another object of the present invention is to provide a control of utensil operation times that achieves high time regulation accuracy of the different operations of t below * - the control of utensil operation times pei or controls the entire cycle of the utensil with a roll of l (ñ ° of a single cam.) The above and other objects, characteristics and advantages of the invention will become apparent from the following description and annexed drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of separate parts of a utensil operation time control incorporating the features of the present invention therein; Figure 2 is an enlarged perspective view of L5 separate portions of a first portion of the utensil operation time control of the Fura L. Figure 3 is an enlarged perspective view in separate portions of a second portion of the control of utensil operation times of Figure 1. Figure 4 is an enlarged perspective view in separate portions of a third portion of the utensil operation time table of Figure L. Figure fl is a perspective view a Start of separate parts of the planetary gear sets of the ? utensil operation time control of Figure 1. Figure 5B is a lower elevation view of the planetary gear sets of Figure 1. Figure C a table showing the magnitude and direction of the respective gears of the planet gear set io1-, of I- i gura bf); and the I-i gure (5 is a view in lower elevation) of the utensil operating time control of Figure 1, showing the lower housing portion removed for clarity of description.

DESCRIPTION DETRLLRDR OF LR INVENTION As the invention is susceptible to different modifications and alternative forms, a specific fashion thereof is shown by way of example in the drawings and will be described in detail in the foregoing. However, it must be understood that there is no attempt to limit the invention to the particular form described, but rather, on the contrary, the intention is to cover all the modifications, equivalents, and alternatives that fall within the spirit and scope of the invention. invention as defined by the appended claims. Referring now to FIGS. 1-4, a utensil operation control knob 10 is shown which controls a number of work operations in a utensil, such as a dishwashing operation. Tool assembly 10 includes a cam 12, a motor 14, a high speed gear assembly IB, a speed gear assembly 1 speed, and a group of terminals of < -day? 21). L cam 1? it is a flat cam horizontally disposed of a type commonly known in the art as a "pangue" cam. Rdemas, cam L2 is secured to an axis 13 ,. One rnan < To secure the cam 12 to the shaft 13 is with a clutch mechanism (not shown). The control of the operating moments of the utensil 10 also includes a number of oscillating arms 15 rotatably secured to an oscillating arm shaft 17. Each one of the oscillating arms L5 includes a follower member 15c which coincides in known manner with a number of cam profiles 25 (see Figure 3) defined on an upper side of the cam 12. According to each of the oscillating arms 15 moves selectively by means of a respective cam profile, a number of switches 19 are actuated thereby generating an output signal on a respective output terminal 20, so as to electrically couple a device such as a water valve electrically activated (not shown) included in the utensil to a power source, thereby controlling a particular working operation - inside the utensil. The high-speed gear assembly 16 includes a high-speed gear train 22 and a high-speed planetary gear set 24. The high-speed gear train 22 is rotatably disposed on a pair of poles 21, while the The high-speed planetary gear set is disposed on a posto 23. An output gear 2b of the high-speed gear train 22 engages meshingly in an input gear 28 (see-Figure 2) of the planetary gear set High speed 24. An output tongue 30 (see Figure 7) of the high speed planetary gear set 24 meshing a transfer gear 32. Transform gear 3? It is not rotatably coupled to a cam transmission gear 34 which engages a plurality of meshing teeth 36 disposed on cam 12 (see Figure 3). S un il arme <; e, the low speed gear assembly 18 includes a train (low speed gears 38 and a low speed planetary gear set 0. The low speed gear train 38 is rotatably disposed on posts 37, while that the planetary play of ba at speed i 0 is rotatably disposed on a post 39. An output gear 42 of the low speed gear train 38 engages meshing with an input gear 44 (see Figure 2) of the low velocity planetary gears 40. An output gear 46 (see Figure 2) of the low speed planetary gear set 40 engages meshed with the transfer gear 32. The high speed planetary gear set 24 and the set of low speed planetary gears 40 are shown in more detail in Figures 5fi and 513. The planetary gear sets 24 and 40 each include a sun gear respectively 2) R and 0 coupled The input gears 20 and 44, respectment. The sun gears 28R and 44P1 are received through an opening 40 defined in the aligning gears Q and 4b. Then, the sun gears 280 and 44R are meshed with various planetary gears 50 and 52, which are rotatably disposed over a number of poles 54. The planetary gears 50 and 52 are retained on the poles 54 by a cap 56. planetary gears 50 and 52 are set on several gear teeth 58a and 60a defined on an inner surface of a pair of ring gears 58 and b0 respectively vamen e. The ring belts 58 and 60 have a number of ratchet teeth 50b and 60b, respectively, defined on an outer surface thereof, as shown in Figure 50. The maple teeth 50b and 60b may be - coupled to prevent or otherwise prevent the movement of the ring gears f > 8 and 60, respective entity. Representative examples of the magnitude and direction of rotation of each of the different gears included in the planetary gear groups 24 and 40 are shown in the Table in Figure 5C. The variables shown in Figure 50 are as follows: Ns - number of gear teeth defined in the sun gears 28a 44a; NR = number of gear teeth defined in ring gear 58, 60; and Mp - number of teeth (gearing defined in each of the planetary gears 50, 52. Preferably, the magnitude of the variables shown in Figure 5C are as follows: Ns - 12; MR 40; and NP 13. Must be appreciated. that for the community of parts, the planetary gear set of al * at speed 24 and the low speed planetary gear set 40 have identical gear ratios / gear outputs. input of the same magnitude on the basis of the gears of in rada 28 and 44 will cause a speed of rotation (Je output of equal magnitude on the output gears 30 and 46. However, the input / output ratio of engr-ane train of high-speed gears 22 is greater than the gear input / output ratio of the speed gear train 38. Therefore, the output gear 26 of the high-speed gear drive 22 rotates to a higher speed- than the output speed 42 of the train d and low speed gears 38. Therefore, the input gear 28 of the high speed planetary gear set 24 will rotate at a higher speed than the input gear 44 of the low speed planetary gear set 40, thereby causing The output signal 30 of the high speed planetary gear set rotates at a higher speed than the output gear 46 of the low speed planetary gear set. Therefore, the output path 30 of the high speed planetary gear group 24 causes faster rotation of the V7 transfer gear. , cam cam transmission 34, and cam 12, which the exit erecting 46 Jel low speed gear set 40. As shown in Figure 5C, the output gear b 30 will not be activated (ie, rotated) unless the ring gear 58 is braking, while the output gear 46 will not be activated unless the gear (ring 60) is engaged (therefore, the transfer gear). 32, the cam transmission gear 34 and the cam 12 will be rotated to A high speed if the ring gear 58 is braked while the ring gear 60 is not braked. It should be noted that if the ring gear 60 is not braked, the planetary gear set at speed 40 is caused to rotate freely. What is understood in the present with the L5 term does not "freely rotate" is that the non-braked ring gear 511 or 60 rotates at a speed which depends on the rotational speed of the transfer gear 32 at which the output gears 30 and 4b are engaged meshingly. On the contrary, the transfer gear 32, the gear of cam transmission 34 and Cam 12 will be rotated at a speed ba if the ring gear bO is braked while the ring gear 58 is not braked (and therefore does not rotate freely). Rotationally disposed on a post 62 a ratchet 64 is found. The insert 64 includes a pair of pins b4a and 64b. When the ratchet 64 is rotated in a first engaged position so that the ratchet 64 moves in a direction toward the ring gear 58, the barb Q4a is received in one of the ratchet teeth 50b preventing the ring gear from engaging with it. 58 rotates in relation to the pole 23. Similarly, when the ratchet 64 rotates in a second engaged position, so that the hub 64 moves in a direction toward the ring gear 60, the barb 64b is received in one The ratchet teeth 60b thereby prevent the ring gear 60 from rotating in relation to the post 39. Therefore, the ratchet 64 is used to selectively activate the output gears 30 and 46 of the high planetary gear set. speed 24 and the game ¡Je gears plantar low speed 40, respectively. In order to selectively move a coupling frame 65 included on the pawl 64 towards one of the ring gears 58 and bO, the utensil operating time control LO includes a high speed selector assembly 66 and a low speed selector assembly 68. The high speed selector assembly 66 includes a cam follower armature 70 and a steering member 72. At a first end, the armature of the cam follower 70 includes a post 70a that is received rotatably in an aperture 74 defined in a lower housing portion 76. The first end of the follower frame (Je cam 70 also includes a non-rotating shaft 70b. The shaft 70b is non-rotatably secured to the steering member 72. The member 72 includes a post 77a which is rotatably received in a defined opening 02 - I - a top housing portion 84 (see La Figui 7), therefore * - or the follower frame of cam 71) yol member 72 are rotated relative to the lower housing portion 76 and the upper housing portion 04, but do not rotate relative to each other. Similarly, the low velocity selector assembly 68 includes a cam follower frame 86 and a steering member 88. At a first end, the pole follower frame includes a pole 86a that is rotatably received at an opening 90 defined in the lower housing portion 76. The first extrusion of the follower frame of the cam 85 also includes a non-rotating shaft 8bb. The shaft 06b is non-rotatably secured to the steering member R 8"F1 direction of rotation 88 includes a pos 80 which is rotatably received in an aperture 94 defined in the upper housing portion 84 (see FIG. Figure 2). Therefore, the armature of the cam follower B6 and the steering member 88 rotate in relation to the lower housing portion 76 and the upper housing portion 04, but does not rotate one relative to the other. An overrun spring 1 2 is coupled in a first ex- post to the post 72a of the steering member 72, and at a second end to a post 104 of a truss 106 included on the pawl 64 (see Figure 2). The supercenter spring 102 generates a deviation that retains the ratchet 64 either in the first aerated position or in a second coupled position in which the tines 64a and 64b, ospeetivarnente, are coupled with, or are received in, the ratchet teeth 58b and 60b of the ring gears 58 and 60, respectively, l deviation of the spring (Je sobrecent ro 102 is exceeded when ol ratchet 64 rotates after For example, if the inlet 64 is in its first coupled position and then is rotated beyond the center point of its displacement path, the deviation of the overshoot resorpt 102 is no longer exerted in one direction such as to retain the pawl 64 in its first coupled position, but in place. The deviation of the over-center resorber 102 is exerted in another direction to retain the pawl 64 in its second coupled position. To rotate the pawl 64 in a direction towards the high speed planetary gear 24, the steering member 72 includes an a-mat 108 (see Figure 2). or In the direction toward the pawl 64, the armature 108 contacts the mating armature 65 of the ratchet 64, thereby rotating the pawl 64 in a direction toward the ring gear 58 of the high speed planetary gear set 24. Once the socket 64 rotates beyond the center point of its displacement path, the deviation of the supercenter spring 102 drives the tine 64a of the ratchet 64 in engagement with the 1 / 58b ring gear teeth of ring gear 58, thereby braking ring gear 50. A voice ring gear r > 8 brakes, the output gear 30 is caused to rotate at a speed associated with the high-speed gear assembly 16. In contrast, to rotate the pawl 64 in a direction toward the planetary gear set (ie, low speed 40, the steering member 88 includes an armature 110 (see Figure 2) When the steering member 88 rotates in a direction toward the pawl 64, the armature 110 contacts the mating armature 65 of the pawl 64 thereby rotating the pawl. 64 in a direction toward the annulus 60 of the low speed planetary gear 40. Once the ratchet 64 rotates beyond the center point of its travel path, the deflection of the spring 102 drives the barb 64b. of the ratchet 64 towards its engagement with the ratchet teeth 60b of the ring gear 60, by braking the ring gear with the Lo. Once the ring gear 60 is pulled, the output gear 4 is caused. 6 rotate at a speed associated with the low speed gear assembly 18. Referring now to Figure 6, a second extr-emo of each of the cam follower armors 70 and 86, includes a follower member 70c and 86c, respectively. The follower member 70c follows a radial cam profile 96 defined in the lower part of the cam 12. "b. Similarly, the follower member is a ladial cam profile 90 defined in the infopoi part of the eva 1 ?. The cam profiles 96 and 98 have a number of actuation slots 96a and 9ii defined therein.A return spring 100 (see Figur ™ 3) is attached to each of the cam follower armrests. 70 and 06 to deflect the second end of the follower armrests of cam 70 and 06 and therefore the cam follower members 7H and 86c, respectively, inwardly toward the axle 13. Therefore, the cam follower members 70c and 86c are diverted to the actuation grooves 9ha and 9a (During the rotation of the cam 12. When the follower member 70c falls into one of the actuation grooves 96a, the member (Je direction 72 rotates in a direction towards the ratchet 64 activating with it the output gear 30 of the high speed planetary gear set 24, as described above. Therefore, the location and size of the actuation slots 9ba along the profile of Cam 96 (see Figure b) defines a first period in which the leg 12 is rotating at a high speed. ? 0 by means of the transmission gear of the eva 34. Similarly when the follower member 86c falls in one of the grooves in the actuation 98a, the member (Je direction 08 rotates in a direction towards the pawl 64 activating thereby the output gear 46 of the game (planetary engr-anes of low speed 40, as described above. Therefore, the location and size of the actuation slots 98a along the nonti of cam 98 (see Figure b) define a second period on which the figure 12 is rotating at a velocity at - means of the cam transmission gear 34. Coupled non-rotatably to the output gear 42 of the low speed gear train 38, is a pulse cam 11? »As < on output gear 42, pulse cam 11? it will continue to rotate regardless of which planetary gear set 24, 40 is coupled with the ratchet 64. Rotatively disposed on the post 39, is a ratchet 114,. A first ex-paddle ratchet 114 is activated by means of the pulse cam 1.12. A second end of the push ratchet 114 contacts a first end of a push lever 116 that is rotatably disposed on an axis 118 of the steering member 188. A second end of the push lever 116 makes selective contact. with ol pawl 64 thereby allowing the pawl 64b of the pawl to be urged temporarily out of contact with the teeth (Je ratchet 60b of the gear <.; Je ring 60 of the 40 low speed planetary gear set. More specifically, the position of the steering member R8 and hence the shaft 110 can be selectively changed by means of the cam follower member 86 due to the configuration of the actuation grooves 9a defined in the cam profile 98 so that The second lever lever end 116 is brought into contact with the ratchet 64 to move the ratchet 64 out of contact with the teeth of the bOb machine. The lever of pu to < i? n 116 is configured to drive and hold the trinqu e 64 in an uncoupled position. Specifically, the pulsing lever 116 drives and retains the pawl 64 away from the ratchet teeth 60b during the upward stroke of the ratchet (Je pulsation 114, Therefore, during the upward stroke of the ratchet 114 , the pawl 64 is not coupled with any of the planetary games 24, 40. The pawl 64 is not driven all the way back to the center point of its travel path, thereby allowing the stepping spring 102 to continue to deflect the pawl 64 in a direction towards the teeth (to the ratchet 60b) It should be noted that when the ratchet 64 is not engaged with any of the planetary gear sets 24 and 40, there is no rotation of the 32 engagement gear, causing if there is no rotation on the lobe 12, however, during a downward stroke of the ratchet 114, the lever lever 116 disengages from the pawl 64 thereby allowing the spring deflection (overshoot 102) to return the prong 64b of the ratchet to contact ratchet teeth 60b thereby creating output rotation on the output gear 46 of the low speed planetary gear set 40, which in turn It rotates the Cam 12. Therefore, it should be noted that the cam profiles 96 and 90 operate par-a sambiai the speed at which -} i ra l a Lev < t 1 ?. In other words, the cam data defined on the surface of the lobe on the bottom of the cam 12 causes changes in the rotational speed of the cam L2. The cam can be turned at a high speed, a low speed, or a slow speed interrupted (ie, rotating discontinuously). The use of multiple speeds allows the L2 Cam to be rotated rapidly during numerous intervals thereby improving the accuracy at which the tool operating time control 10 controls a number of critical work operations of the implement, while also retarding the 12 during intervals in which the time control (He / she operates the instrument 10 with a number of non-critical operations of the utensil, thereby preserving the space of the cam, to allow the control of operation times of the cam. utensil 10 can be manually reset or repositioned in another way by the utensil operator, utensil operation timing control 10 includes a decoupling shaft 120, a spring 122, a lever 124, a slide member 126, and a pair of sector gears 128 and 130, as shown in Figures 1 and 2. A central section of the decoupling shaft 120 is coupled to a first xtreme (Jel shaft 13 by spring 122, while a blade (not shown) is coupled to a second end of shaft 13. If an operator of the tool pushes and turns the ')') knob, ol axle 13 so as to rotate, thereby causing rotation of the coupling ee 120, which in turn prevents the oscillating arms 15 from making contact with the cam profiles on the upper part. of the cam 12. In addition, an end pin of the decoupling shaft 1? 0 received in an opening 124a defined in the lever 124 (see Fig. 2). A post 124b included on the lever 124 is received on an aperture. 126a defined at a first end of slide member 1.26 (see Figure 2) The rotation of decoupling shaft 120, such as when the operator pushes and rotates the blade, drives lever 124 and therefore the member of sliding 126 in the general direction of the arrow fl in Figure 2. The sector gear 128 is rotatably disposed on the post 23, while the sector gear 130 is rotatably disposed on the post 39. The sector gear 128 is Indent coupling with the sector gear 130. Ronders, a projection L30a of the sector gear 130 is received in a groove 126b defined in the second extrusion of the slide member 126 (see Figure 2), thereby causing the sector gears 128 and 130 to rotate when the operator pushes and turns the knob. The sector enclosure 128 includes a beveled surface member 132 which, by rotation of the sector loop 128, coincides with the steering member 72 in order to lift the high speed selector assembly 66 thereby preventing the armature of the cam follower 70 makes contact with the profile of cam 9b, r, lnly, the sector gear 130 includes a beveled surface member 134 which, by engagement with the gear of sector 130, coincides with the imb or direction 8 (1) to raise the low speed selector assembly 68, thus preventing the lobe follower frame 06 from contacting the cam profile l.l. With rally, when the operator pulls the knob, the The retractor 120 rotates back to its original position, thereby placing the oscillating arms 15 back in contact with the cam profiles on the upper part of the cam 12. Furthermore, the cam follower armrests 70 and 86 are placed back in contact c on the profiles (Je leva 96 and 98, respectively. As described above, the utensil operation time control 10 includes a rotating cam 12 which can selectively change speeds by rotating at a high speed when switch-is activated and deactivated within the control of utensil operation times. , so that an improved accuracy in the timing of particular utensil operations (ie, critical) is reached, and also the cam rotates at a low speed when the control of operation times (Je utensil activates or deactivates switches associated with other work operations (ie, not critical), so that space is retained on the surface of the cam.This control design &ute utensil operation times create numerous advantages? about the other time, operation and utensil controls that have been developed until now. Although the invention has been illustrated and described in detail in the drawings and previous description, this illustration and description is they are considered exemplary and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that it is desired to protect all changes and modifications that come within the spirit of the invention. For example, although Cam 12 is described as a simple cam arranged hopzoritally, other cam configurations may also be used. For example, the cam 12 could be multiple cylindrical cams (for example a stack of cams) with separate cam profiles operating as the Cam profiles 25, 96 and 90.

Claims (1)

1. NQVEDRD OF LR INVENTION CLAIMS 1"A control of operation times of utensils comprising, a group of output terminals; and a Cam that has defined on it 1) a first set of camiles that controls the time at which signals are generated (eg output on the group of output terminals, and 2) a second set of profiles of ieva that control the speed of said cam. The control of operating times of utensils (Je according to claim 1, further characterized by comprising: a motor, a first assembly of engr-anes that mechanically couple said motor ad cam during a first period of time. iodo, and a second gear assembly that mechanically couples said motor to said cam during a second period 3.- The time control (je operation of utensils according to claim 2, characterized in that: said eva rotates to a first speed during said first period, and said cam rotates at a second speed (during said second period) 4. The control of utensil operation times according to claim 3, characterized in that said motor is uncoupled from said cam during a third period. period. ? b 5 - The control of times of operation of utensils (Je co umment with claim 2, further characterized in that it comprises: a first velocity selector assembly that is mechanically interposed between said first gear assembly and said cam; a second speed-selector assembly that is mechanically interposed between said second gear assembly and said valve. The control of tool operation times according to the indication 5, characterized in that said first The gear assembly includes a first gear train having a first gear input / output ratio, said second gear assembly includes a second train of gears having a second gear input / output ratio, and said first gear ratio. Entry / Exit Entry The engagement is greater than said entry / exit ratio i (engagement gear) / -the- with the role of utensil operation times in accordance with the claim cac n, characterized in that said first gear assembly includes a first set of planetary gears that are mechanically coupled to said first gear train, and said second gear assembly includes a second set (planetary gears that are mechanically coupled). to said second gear train. 8. The control of utensils operating times according to claim 7, further characterized in that it comprises: a ratchet that can be placed in L) a 7 7 first coupled position in which said pawl engages said ppmei planetary gear set during said first period, and 2) a second coupled position in which said pawl engages said second set of planetary gears during said second period. 9. VI operation control of the utensils according to claim 8, further characterized in that the ratchet can be placed in a decoupling position in which said pawl does not engage said first play. of planetary gears or said second set of planetary gears during said third period 10. Control of utensil operation times according to claim 8, further characterized in that it comprises a lever that selectively places said pawl between said second coupled position. and said coupling position 11. A control of utensil operation times comprising: a motor, a first gear assembly that is mechanically coupled to said motor, a second gear assembly which is mechanically coupled to said motor. motor, and a cam that is driven by 1) said first gear assembly during a first period, and 2) said second assembly of gears (J). uring a second period. 12. The control (e) operating times of utensils according to claim 11, characterized in that said cam rotates at a first speed during said first time. period, and said second cam rotates a second speed during said second period. 13.- The control of operation times of utensils according to claim 12, characterized in that said motor is disengaged from said cam during a twisting period »14.- The control of operating times With claim 1, characterized further by comprising a first speed-selector assembly that is mechanically interposed between said first assembly (said engine and said cam) and a second speed selector assembly that is mechanically interposed by said second assembly. of gear and said cam 15. The control of utensil operation times according to claim 14, characterized in that said first gear assembly includes a first gear train having a first gear input / output ratio, said second gage assembly includes a second gear train having a second gear input / output ratio, and said first gear ratio. gear input / output is greater than said second gear input / output ratio. 16.- The control of utensil operation times according to claim 15, characterized in that said first gear assembly includes a first set of planetary gears that is mechanically coupled to said? prnnei < In gear, and said second gear assembly includes a second set of planetary gears which is mechanically coupled to said second gear train. 17. The control of operating times of utensils b according to claim 1b, further characterized in that it comprises: an inlet that can be placed in L) a first coupled position in which said pawl engages with said first planetary gear set during said first period, and 2) a second coupled position in which Said ratchet engages with said second set of planetary gears during said second period. 18. The control (e) operating times of utensils according to claim 17, further characterized in that said pawl can be placed in a position of L5 uncoupling on which said pawl does not engage said first planetary gear set or said second set of planetary gears during said third period. 19.- A method of operation (a control of time (the operation of utensils that includes the steps of: providing 20 a cam having defined in the same L) a first group of profiles Les Cam, and 2) a second group of cam profiles; controlling the generation of output signals on a group of output terminals of the tool operating time control with the first group of cam profiles; and control 25 l at the speed of the Cam with the second group of Cam profiles.