US3678225A - Repeat cycle timer of modular construction with improved adjustable cam - Google Patents

Repeat cycle timer of modular construction with improved adjustable cam Download PDF

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Publication number
US3678225A
US3678225A US130100A US3678225DA US3678225A US 3678225 A US3678225 A US 3678225A US 130100 A US130100 A US 130100A US 3678225D A US3678225D A US 3678225DA US 3678225 A US3678225 A US 3678225A
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Prior art keywords
cam
timer
module
members
areas
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US130100A
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English (en)
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Harold D Hulterstrum
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EAGLE SIGNAL CONTROLS CORP A CORP OF DE
Gulf and Western Industries Inc
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Gulf and Western Industries Inc
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Assigned to WICKES MANUFACTURING COMPANY, A CORP. OF DE. reassignment WICKES MANUFACTURING COMPANY, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GULF & WESTERN INDUSTRIES, INC., FORMERLY GULF & WESTERN INDUSTRIES, INC.,
Assigned to EAGLE SIGNAL CONTROLS CORP., A CORP. OF DE. reassignment EAGLE SIGNAL CONTROLS CORP., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WICKES MANUFACTURING COMPANY, A DE. CORP.
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed
    • H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
    • H01H43/12—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation
    • H01H43/125—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation using a cam
    • H01H43/127—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation using a cam with provision for adjustment of the intervals by means carried by the cam
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • Scott Attorney-Meyer, Tilberry & Body ABSTRACT A repeat cycle timer of the type wherein a plurality of cams are coaxially rotated through a timed cycle to effect sequential energization of a plurality of switches adapted to control electrical elements remote therefrom.
  • the timer is comprised of a plurality of identical interchangeable cam modules each including a cam hub and at least one switch associated therewith.
  • the adjacent modules and cam hubs are rotatably driven by drive means.
  • Certain of the cam hubs include adjustable cam surfaces thereon to permit variable switch programs to be presented.
  • the invention is particularly applicable to a repeat cycle timer of modular construction for use in sequentially controlling a plurality of electrical elements in circuits remote therefrom and will be described with particular reference thereto; however, it will be appreciated that the invention has broader applications and may be used in several environments where it is desired to control any type of element in a particular timed sequence.
  • repeat cycle timers essentially comprised a plurality of snap action switches actuated by interval circular cams mounted longitudinally along a common drive shaft and rotatably driven through a friction clutch by a synchronous motor.
  • the number of these circular cams which could be mounted on the drive shaft was, of course, limited by its length and the capacity of the timer frame to accommodate further switches. Further, no provisions were made to permit circumferential adjustment of the cam surfaces along the cams or the cams themselves around the drive shaft so as to permit variable sequential control of the elements associated with the timer. Any desired timed sequence changes necessitated dismantling the entire timer or installing a new timer.
  • the present invention contemplates a new and improved repeat cycle timer of modular construction which overcomes all of the above referred problems and others, and provides a new repeat cycle timer which is simple, economical, readily adjustable in the field, and readily adaptable for use for any number of time sequence requirements.
  • a new timer mechanism for energizing a plurality of elements in a predetermined sequence.
  • the new timer is comprised of a plurality of independent interchangeable modules, each including a cam hub having a longitudinal axis and means for mounting the hub for rotation about that axis and at least one control switch adapted to control one of the plurality of elements.
  • Means for rigidly interconnecting successive modules and cam hubs into a unit are provided whereby the longitudinal axes of the hubs form a longitudinal axis for the unit.
  • Drive means are provided for rotating the interconnected cam hubs, each including cam surfaces thereon, about the unit axis to effect the desired sequential energization of the elements.
  • selected of the cam surfaces are adjustable about their respective cam hubs for effecting varied operating characteristics for the elements associated therewith.
  • a new cam member for a timer comprising a generally circular hub portion having two opposed generally circular face portions and an outer circumferential surface portion. Further included on the cam hub are means for retaining separate cam surface portions in a predetermined desired position thereon.
  • Each cam hub includes means for interconnecting the hub with other similar cam hubs to form an integral unit and means for mounting the hub about its longitudinal axis.
  • the retaining means on the new cam hub permits adjustment of the cam surface portions thereon without the necessity of disassembling the timer.
  • a new interchangeable cam module comprising means for mounting a cam member in a predetermined desired position relative to other similar cam members and means for retaining at least one control switch relative to the cam. Means for locating and rigidly interconnecting the module with other similar modules are also included.
  • the principal object of the present invention is the provision of a new repeat cycle timer of modular construction which readily permits adjustment of the timer cam members in the field without the necessity for disassembling the entire timer.
  • Another object of the present invention is the provision of a repeat cycle timer of modular construction which readily permits the addition and deletion of cam members and modules as dictated by work requirements for the timer.
  • Another object of the present invention is the provision of a repeat cycle timer of modular construction which decreases the amount of component parts required therefor.
  • Yet another object of the present invention is the provision of a repeat cycle timer of modular construction in which the cam members and modules are interchangeable.
  • Still another object of the present invention is the provision of a new cam member for use in a repeat cycle timer of modular construction which permits adjustment of the cam surfaces thereon without removing the cam from its position in the timer.
  • Yet a further object of the present invention is the provision of a new interchangeable cam module for a repeat cycle timer of modular construction which module provides support for a cam member and a control switch activated by the cam member.
  • FIG. 1 is a side view of the repeat cycle timer of the subject invention including a partial cross sectional view for clarity in showing the invention
  • FIG. 2 is an end view of the reset cycle timer of the subject invention showing in particular the timer adjustment means
  • FIG. 3 is a cross sectional view taken along lines 33 in FIG. 1;
  • FIG. 4 is a side view of the cam member shown in FIG. 3 including a partial cross sectional view for clarity in showing the invention
  • FIG. 5 is an exploded view of the cam hub and cam surface areas comprising the cam member shown in FIGS. 3 and 4;
  • FIG. 6 is a cross sectional view taken along lines 6-6 in FIG. 1;
  • FIG. 7 is a side view of that portion of the timer shown in FIG. 6 including a partial cross sectional view through the cam member;
  • FIG. 7A shows the cam member of FIG. 6 in a trip position
  • FIG. 7B shows the cam member of FIG. 6 in the cancel position
  • FIG. 7C shows the cam member of FIG. 6 in another trip position
  • FIG. 8 is a cross sectional view taken along lines 8-8 in FIG. 6 showing the mounting of the cam surface to the cam hub;
  • FIG. 9 is a cross sectional view taken along lines 9 9 in FIG. I and showing the clutch assembly of the subject invention.
  • FIG. 10 is a cross sectional view of the clutch assembly in FIG. 9 taken along lines 10-10;
  • FIG. 11 is an exploded view of the clutch assembly shown in FIG. 9;
  • FIG. 12 is a view showing an alternate position for the drive assembly used with the subject invention.
  • FIGURES show the new reset cycle timer of modular construction comprised of a plurality of interconnected cam module assemblies A, a plurality of interconnected cam assemblies B, clutch assembly C, drive assembly D and adjustment assembly E.
  • the cam members of the cam assemblies are driven through clutch assembly C by drive assembly D in order to perform the step of energizing a plurality of control switches in predetermined timed sequence.
  • the specific configuration of drive assembly D does not form a part of the present invention, it being understood that any number of small electrical synchronous motors could be utilized.
  • cam module assembly A includes a cam assembly mounting area and a base area 12. Included in mounting area 10 is a cam hub receiving hole 14 and a longitudinally extending spacer flange 16 extending longitudinally outward therefrom.
  • Base area 12 includes an end face wall 18 having a front edge surface'20 and a rear edge surface 22. Extending outwardly from rear edge surface 22 is a pair of wall members 24, 26 which form a generally L-shaped configuration. Included in the upper portion of wall member 24 is an actuator receiving slot 28. Slot 28 is generally circular in cross sectional configuration and is opened at one side thereof.
  • Adjacent wall members 24,26 on rear edge surface 22 is a second set of outwardly extending wall members 30,32, also forming a generally L-shaped configuration.
  • Wall members 20,22 and 32,34 extend outwardly coextensive with each other.
  • a tubelike member 34 used for joining the modules together as will be hereinafter more fully described. It will be appreciated that cam module assembly A may be formed from any of a plurality of materials, however, in the preferred embodiment, a rigid plastic material is used with all the component parts molded integral therewith.
  • An actuator arm generally designated 50 is received in the cam module assembly for actuation of a control switch.
  • the actuator arm includes lever arm 52 including thereon a cylindrical actuating arm mounting member 54 receivable in slot 28. The fit between member 54 and slot 28 is such that actuator arm 50 may be pivoted in its mounting.
  • the actuator arm further includes a leg 56 and an actuator head 58. Extending outwardly from actuator head 58 is a pair of actuator protrusions 60,62 as best shown in FIGS. 1 and 3.
  • a resilient plastic material is used and all the components of the actuator arm are molded integral therewith.
  • control switch 70 Disposed in the corner of wall members 30,32 is a control switch generally designated 70 which does not form a part of the present invention and may comprise any of several types of control switches.
  • Switch 70 includes leads 72,74 and 76.
  • the control switch also includes a control switch trip member 78 which is adapted to energize or de-energize the switch when pushed inwardly toward the switch body.
  • Cooperating with wall members 30,32 in maintaining switch 70 in position is a small protrusion (not shown) molded integral in base area 12 for engagement with a detent in the body of switch 70. As can best be seen in FIG.
  • actuator head 58 will rest against control switch trip member 78 such that downward or upward movement of the actuator head will cause a corresponding downward or upward movement in control switch trip member 78 to thus cause energization or de-energization of the control switch.
  • cam assemblies B may be comprised of any of a plurality of cam and cam surface configurations which will hereinafter be described in greater detail, the mounting means for adjacent cam assemblies are the same. The following description will therefore be directed to one of these mounting means, it being understood that the others are identical thereto except where specifically noted.
  • each cam assembly includes a hollow forwardly extending mounting shaft and a hollow rearwardly extending mounting shaft 92.
  • Shaft 92 includes two V-shaped lands 94,96 oppositely disposed from one another and two V-shaped grooves 98,100 also oppositely disposed from one another.
  • shaft 90 includes lands 94,96 and grooves 98', 100. These lands and grooves are adapted to fit into adjacent lands and grooves in order to rigidly interconnect the adjacent cam assemblies. This interconnection is best shown with reference to FIG. 1.
  • Cam members 110,1 12 are non-adjustable cams of two different types.
  • Cam member includes cam surfaces 114 spaced circumferentially therearound for actuation of the associated actuator head 58, and cam member 112 includes actuator head engaging elements 116 which engage protrusions 60 or 62 in a manner hereinafter described.
  • cam surfaces 114 and elements 116 are not adjustable on their respective cam members 110,112.
  • these members are molded from a rigid plastic material to include mounting shafts 90,92 integral therewith.
  • cam hub 120 shows one embodiment of an ad justable cam member and cam hub 122 shows another embodiment of an adjustable cam member.
  • Cam hub 120 is shown more particularly in FIGS. 3, 4 and 5 and cam hub 122 is shown more particularly in FIGS. 6, 7 and 8.
  • the cam hub 120 includes oppositely disposed face portions 130,132 and a circumferentially extending surface portion 134.
  • a generally V-shaped ring-like protrusion 136 is disposed on face portion generally intermediate circumferentially extending surface portion 134 and the center of the cam hub.
  • a second V-shaped ring-like protrusion 138 is similarly disposed relative to face portion 132.
  • Included on circumferentially extending surface portion 134 are a plurality of longitudinally extending serrations 140. Protrusions 136,138 and serrations 140 are used to retain the adjustable cam surfaces in a desired operative position on cam hub 120 as will be hereinafter described.
  • cam surface portion 150 associated with cam hub 120 are two cam surface portions 150,152.
  • cam surface portion 150 is identical to cam surface portion 150, it being understood that cam surface portion 152 is identical thereto unless otherwise specifically noted.
  • the cam surface portion includes a cam surface area 154 extending on the outside periphery thereof and a mounting bracket portion generally designated 156.
  • a mounting bracket portion Associated with the mounting bracket portion is the inner peripheral surface 158 of cam surface area 154 and an inwardly extending side ledge member 160.
  • the mounting bracket includes a protrusion engaging leg 162 having an outwardly extending portion 164 and a downwardly extending portion 166.
  • Leg 162 includes at the distal end thereof an inwardly extending generally V-shaped protrusion engaging lip 168.
  • Surface 158 includes at a position adjacent the mounting bracket portion a plurality of serrations 169 for mating engagement with serrations 140 on surface 134 of the cam hub.
  • cam surface portions 150,152 are disposed on opposite sides of cam hub 120 and may present a cam surface for engagement with actuator head 58 for 360 of rotation of the cam hub.
  • each of the cam surface areas includes a cam surface area lead 170 for smooth communication with actuator head 58.
  • switch 70 is actuated only for that period of time in which cam surfaces 154 maintain actuator head in the depressed position acting against control switch trip member 78.
  • operation of cam 110 relative to its as sociated control switch 70 is identical with that hereinabove described relative to cam hub 120 excepting that the cam surfaces on cam 110 are non-adjustable.
  • cam surface portions used in combination with cam hub 122, it will be seen that there are three cam surface portions, namely, 190,192 and 194 having cam surface areas 196,198 and 200 respectively thereon.
  • Each cam surface portion also includes an identical mounting bracket portion 202.
  • leg 56 of actuator arm 50 includes an actuator locking element or protrusion 206 at the distal end thereof.
  • actuator head 58 when element 206 is on one side of protrusion 204, actuator head 58 is in a non-actuating relationship relative to control switch trip member 78 and when element 206 is on the lower side of protrusion 204, actuator head 58 is retained in an actuating position relative to the control switch trip member.
  • cam surface portion 190 includes thereon a forwardly extending cam surface 210 having a generally V-shaped groove 212 and an upwardly extending V-shaped cam surface area 214 immediately adjacent thereto.
  • cam surface area 210 acts against protrusion 60 to direct actuator head 58 downwardly against trip member 78 to place switch 70 in an energized condition.
  • element 206 is biased outwardly over protrusion 204 to retain actuator head 58 in the actuating position.
  • protrusion 60 enters into groove 212 and against cam 214, as shown in FIG. 78, such that the actuator head is lifted up wardly from its energizing position relative to trip member 78 so that element 206 is pulled outwardly over protrusion 204 to maintain the actuator head in the non-energizing position.
  • Cam surface portion 192 merely includes a downwardly extending V-shaped cam 220 thereon. As cam 220 engages protrusions 60, actuator head 58 is directed downwardly and element 206 is again directed over protrusion 204 to maintain the actuator head in the energizing position. The actuator head will remain in this energizing position until acted upon by an adjacent cam member to cancel the energization.
  • Cam surface portion 194 is shown in FIGS. 6 and 7C and includes a V-shaped groove area 222 and an upwardly extending V-shaped cam surface area 224. This cam surface portion is used to cancel the energizing position of actuator head 58 by cam surface portion 192. As protrusion 60 enters into groove 222 and against cam 224, the actuator head is lifted from its engaging position as hereinabove described relative to cam surface portion 190. It should be noted that movement between the actuating and non-actuating positions of actuator head 58 causes pivotal movement of leg 52 relative to its mounted position in wall 24. It will be appreciated that any combination of the above described cam surface portions may be used with cam hub 122.
  • Each of the cam surface portions includes an identical mounting bracket portion 202 for maintaining it in position on cam hub 122. Description is hereinafter made relative to one of these mounting portions, it being understood that the others are identical thereto.
  • the mounting bracket portion includes a first protrusion engaging leg 230 for association with one side of the cam hub and a second protrusion engaging leg 232 for association with the other side of the cam hub. These legs are interconnected by a circumferential surface engaging portion 233.
  • Leg 232 includes at the distal end thereof a protrusion engaging lip 234 which is adapted to fit over ring-like protrusion 138.
  • Leg 230 is of sufiicient length to be in communication with the edge of surface portion 134 and the outermost edge of ring-like protrusion 136 on the cam hub.
  • Surface portion 233 includes a plurality of serrations 236 to engage serrations 140 on surface 134.
  • cam hubs, the cam surface portions and the actuator arms may be made from any suitable materials, however, in the preferred embodiment, the cam hubs are molded from a rigid plastic material and the cam surface portions and actuator arms are molded from a resilient plastic material. Further, it is to be understood that the operation of the cam assembly B utilizing cam member 112 is the same as that hereinabove described relative to cam hub 122 except the cam surface portion thereon are non-adjustable.
  • clutch assembly C is comprised of a drive ratchet ring 250 having an inner peripheral surface 252 including a series of longitudinally extending serrations therearound.
  • This drive ratchet ring also includes a forwardly extending hollow mounting shaft having lands 94, 96' and grooves 98', 100'.
  • a clutch spider 260 including spider hub 262 and a plurality of outwardly extending arcuate resilient fingers 264. Disposed in the center of spider hub 262 are land receiving recesses 266,268 on opposite sides of a shaft receiving hole 270.
  • a clutch drive gear 272 includes a shaft portion 274 and a spider hub engaging portion 276.
  • the spider hub engaging portion includes lands 278,280 disposed to be received in communication with land receiving recesses 266,268, respectively.
  • Coaxially disposed in one end face of the clutch drive gear is a drive motor gear receiving hole 282.
  • This receiving hole in the preferred embodiment, is star-shaped, however, it will be appreciated that any shape for use with a particular selected drive motor may be utilized.
  • Shaft portion 274 extends into a receiving hole 284 in shaft 90 of drive ratchet ring 250. As can be particularly seen in FIG. 9, when clutch spider 260 is in position, each arcuate resilient finger 264 engages serrations 254 of the drive ratchet ring.
  • clutch assembly C may be manufactured from any suitable material, however, in the preferred embodiment, the drive ratchet ring and clutch drive gear are molded from a rigid plastic material and the spider is molded from a more resilient plastic material.
  • Drive assembly D is comprised of a drive motor generally designated 90 having leads 292,294 and a motor mounting module 296. As hereinabove stated, this motor may be selected from any of several types of synchronous motors.
  • the motor mounting module includes a motor mounting portion 298 and base portion 300. Disposed in portion 298 is a drive gear receiving hole 302 positioned to be coaxial with the plurality of mounting shafts 90,92.
  • Drive motor 290 may be mounted to the module by any convenient means, which, in the preferred embodiment, comprise screws 304,306.
  • Base portion 300 includes a front surface area 308 having disposed therein a receiving recess 310 to be coaxial with tubelike members 34.
  • Front surface area 308 is designed to be matingly received relative to a cam module assembly A primarily against wall members 24,26 and 30,32. It will be appreciated that motor mounting module 296 may be manufactured from any suitable material, however, in the preferred embodiment, this module is molded from a rigid plastic material.
  • Adjustment assembly E is best shown in FIGS. 1 and 2 and includes a dial member 320 having disposed thereon a face member 322. This face member is graduated in accordance with the speed of rotation of drive motor 290 in order to calibrate the length of a timed sequence desired.
  • the dial member includes at the rear portion thereof a cam module engaging surface 324 having a lip surface 326 for mating engagement with the top of the cam assembly mounting area on the adjacent cam module assembly A.
  • An adjustment knob 330 including a pointer 332 thereon, is disposed on one side of face 322 and includes a shaft portion 334 extending coaxially through the face and dial member and into the hollow area of the forward mounting shaft 90 of the adjacent cam assembly B.
  • a set screw 336 maintains shaft 334 in a stationary position relative to knob 330. Included adjacent the end of shaft portion 334 are grooves 338 and lands (not shown) similar to those previously discussed relative to shafts 90,92. These are for engagement with the grooves and lands of the hollow forward mounting shaft of the adjacent cam assembly in order that the adjustment assembly may be rigidly interconnected therewith.
  • the clutch assembly which has previously been assembled as shown in FIGS. 9 and 10, may be placed thereon with drive gear receiving hole 282 receiving the drive gear of the drive motor.
  • the first cam module assembly A utilizing the cam assembly A having cam member 110 and with the associated control switch 70 and actuator arm 50 installed thereon, may be placed adjacent motor mounting module 296.
  • the lands and grooves of shaft 90, integral with drive ratchet ring 250 engage the corresponding lands and grooves of hollow rearwardly extending mounting shaft 92 of cam member 110.
  • base area 12 specifically edge 22 and wall members 24, 26, 30 and 32, engages front surface area 308 of base portion 300.
  • each base area 12 of a cam module assembly mates with base area 12 of the adjacent cam module assembly and each of the front and rear mounting shafts 90,92 mates with the associated adjacent mounting shaft so as to form an integral unit.
  • cam module assemblies A When the desired number of cam module assemblies A are so mounted, they may be rigidly affixed to drive assembly D by an elongated bolt 350 extending through each of the tube-like members 34 and receiving recess 310 and maintained in this position by a nut 352 threadably received on the bolt.
  • adjustment assembly E may be located relative to the last cam module assembly A such that the end of shaft portion 334 is received in front mounting shaft 90 and the lands and grooves associated with the front mounting shaft are mated with the lands and grooves adjacent the shaft portion. Adjustment assembly E is retained in its position relative to the cam module by any convenient means, which, in the preferred embodiment, comprise a screw 354 engaging both dial member 320 and cam assembly mounting area 10 of the adjacent cam module assembly.
  • cam surfaces 114 on nonadjustable cam and control switch actuator elements 116 on non-adjustable cam 112 be placed in their desired oriented position during molding thereof.
  • cam surface portions 150,152 associated with cam hub 120 and cam surface portions 190,192 and 194 associated with cam hub 122 may be set at any time following assembly and adjusted thereafter to present any desired operational sequence. The adjustment steps are as has been hereinabove described.
  • To set the timer itself for a preselected timed sequence it is merely necessary to rotate the interconnected cam assemblies through the clutch assembly by rotating knob 330 generally clockwise in the view of FIG. 2 to a preselected time interval as shown on face 322.
  • Drive motor 290 is then energized to drive the cam assemblies in a counterclockwise direction in the view of FIG. 2 such that during rotation, each of the actuator heads 58 are moved to actuate the associated control switch 70 through control switch trip members 78 in response to communication with the associated cam surface portions as hereinabove previously described.
  • cam module assemblies A with cam assemblies B may be used than that shown in FIG. 1. It is merely necessary to lengthen or shorten bolt 350 to accommodate a greater or lesser number of these assemblies.
  • a repeat cycle timer using the concepts of the subject invention could be assembled using any combination of adjustable cam hubs similar to cam hubs 120,122 or non-adjustable cam members such as 110,112. The configuration of the timer need only be dictated by the specific work requirements.
  • Each control switch 70 may be connected to any number of circuits remote from the switch for energization thereby.
  • FIG. 12 A second embodiment of the subject invention is shown in FIG. 12 and comprises the utilization of a large drive gear.
  • drive motor 290 is removed from its position as shown in FIG. 1 relative to the first embodiment and inverted such that the motor drive gear is received through a second drive gear receiving hole 302 disposed in motor mounting portion 298 below drive gear receiving hole 302.
  • Clutch assembly C is removed from the timer when using this embodiment and a large drive gear 360 is inserted therefor which is interconnected between motor mounting module 296 and the first cam module assembly A and cam assembly B in a similar fashion to that as hereinabove described.
  • the drive gear of drive motor 290 engages teeth 362 spaced around the outer circumferential surface of gear 360 to effect driving of the cam assemblies.
  • this modification has the effect of reducing the speed at which the cams rotate and, in this second preferred embodiment, the reduction ratio is 10:1. Also in this second embodiment, the adjustment assembly is removed from the timer. The actual operation of the timer and the alternatives as to construction remain the same as described with reference to the first embodiment.
  • a timer mechanism for operating a plurality of elements in a predetermined sequence comprising:
  • a plurality of independent interchangeable stationary cam member support modules each including a cam member having a longitudinal axis and means for mounting said cam member for rotation about said axis relative to the associated module and means for locating at least one control switch adapted to control at least one of said elements said plurality of modules forming a frame for said timer;
  • cam surface area 154 for desired communication against actuator head 58, it is merely necessary to lift the cam surface portion slightly away from the cam hub at the end including mounting bracket portion 156 to remove the interfitting relationship of serrations 140,169 and rotate the cam surface portion around the cam hub to the position desired.
  • cam surface portions 150,152 are adjusted to present a cam surface in cooperation with actuator arm 58 for approximately 330 of a cam hub rotation.
  • each of the cam surface areas includes a cam surface area lead 170 for smooth communication with actuator head 58.
  • cam 110 is actuated only for that period of time in which cam surfaces 154 maintain actuator head in the depressed position acting against control switch trip member 78. It will also be appreciated that operation of cam 110 relative to its associated control switch 70 is identical with that hereinabove described relative to cam hub 120 excepting that the cam surfaces on cam 110 are non-adjustable. Referring now to FIGS. 6, 7 and 8 and the cam surface portions used in combination with cam hub 122, it will be seen that there are three cam surface portions, namely, 190,192 and 194 having cam surface areas 196,198 and 200 respectively thereon. Each cam surface portion also includes an identical mounting bracket portion 202.
  • leg 56 of actuator arm 50 includes an actuator locking element or protrusion 206 at the distal end thereof.
  • actuator head 58 when element 206 is on one side of protrusion 204, actuator head 58 is in a non-actuating relationship relative to control switch trip member 78 and when element 206 is on the lower side of protrusion 204, actuator head 58 is retained in an actuating position relative to the control switch trip member.
  • cam surface portion 190 includes thereon a forwardly extending cam surface 210 having a generally V-shaped groove 212 and an upwardly extending V-shaped cam surface area 214 immediately adjacent thereto.
  • cam surface area 210 acts against protrusion 60 to direct actuator head 58 downwardly against trip member 78 to place switch 70 in an energized condition.
  • element 206 is biased outwardly over protrusion 204 to retain actuator head 58 in the actuating position.
  • protrusion 60 enters into groove 212 and against cam 214, as shown in FIG. 7B, such that the actuator head is lifted upwardly from its energizing position relative to trip member 78 so that element 206 is pulled outwardly over protrusion 204 to maintain the actuator head in the non-energizing position.
  • Cam surface portion 192 merely includes a downwardly extending V-shaped cam 220 thereon. As cam 220 engages protrusions 60, actuator head 58 is directed downwardly and element 206 is again directed over protrusion 204 to maintain the actuator head in the energizing position. The actuator head will remain in this energizing 'position until acted upon by an adjacent cam member to cancel the energization.
  • Cam surface portion 194 is shown in FIGS. 6 and 7C and includes a V-shaped groove area 222 and an upwardly extending V-shaped cam surface area 224. This cam surface portion is used to cancel the energizing position of actuator head 58 by cam surface portion 192. As protrusion 60 enters into groove 222 and against cam 224, the actuator head is lifted from its engaging position as hereinabove described relative to cam surface portion 190. It should be noted that movement between the actuating and non-actuating positions of actuator head 58 causes pivotal movement of leg 52 relative to its mounted position in wall 24. It will be appreciated that any combination of the above described cam surface portions may be used with cam hub 122.
  • Each of the cam surface portions includes an identical mounting bracket portion 202 for maintaining it in position on cam hub 122. Description is hereinafter made relative to one of these mounting portions, it being understood that the others are identical thereto.
  • the mounting bracket portion includes a first protrusion engaging leg 230 for association with one side of the cam hub and a second protrusion engaging leg 232 for association with the other side of the cam hub. These legs are interconnected by a circumferential surface engaging portion 233.
  • Leg 232 includes at the distal end thereof a protrusion engaging lip 234 which is adapted to fit over ring-like protrusion 138.
  • Leg 230 is of sumcient length to be in communication with the edge of surface portion 134 and the outermost edge of ring-like protrusion 136 on the cam hub.
  • Surface portion 233 includes a plurality of serrations 236 to engage serrations 140 on surface 134.
  • cam hubs, the cam surface portions and the actuator arms may be made from any suitable materials, however, in the preferred embodiment, the cam hubs are molded from a rigid plastic material and the cam surface portions and actuator arms are molded from a resilient plastic material. Further, it is to be understood that the operation of the cam assembly B utilizing cam member 112 is the same as that hereinabove described relative to cam hub 122 except the cam surface portion thereon are non-adjustable.
  • clutch assembly C is comprised of a drive ratchet ring 250 having an inner peripheral surface 252 including a series of longitudinally extending serrations therearound.
  • This drive ratchet ring also includes a forwardly extending hollow mounting shaft having lands 94', 96 and grooves 98', 100.
  • a clutch spider 260 including spider hub 262 and a plurality of outwardly extending arcuate resilient fingers 264. Disposed in the center of spider hub 262 are land receiving recesses 266,268 on opposite sides of a shaft receiving hole 270.
  • a clutch drive gear 272 includes a shaft portion 274 and a spider hub engaging portion 276.
  • the spider hub engaging portion includes lands 278,280 disposed to be received in communication with land receiving recesses 266,268, respectively.
  • Coaxially disposed in one end face of the clutch drive gear is a drive motor gear receiving hole 282.
  • This receiving hole in the preferred embodiment, is star-shaped, however, it will be appreciated that any shape for use with a particular selected drive motor may be utilized.
  • Shaft portion 274 extends into a receiving hole 284 in shaft 90 of drive ratchet ring 250. As can be particularly seen in FIG. 9, when clutch spider 260 is in position, each arcuate resilient finger 264 engages serrations 254 of the drive ratchet ring.
  • clutch assembly C may be manufactured from any suitable material, however, in the preferred embodiment, the drive ratchet ring and clutch drive gear are molded from a rigid plastic material and the spider is molded from a more resilient plastic material.
  • Drive assembly D is comprised of a drive motor generally designated 90 having leads 292,294 and a motor mounting module 296.
  • this motor may be selected from any of several types of synchronous motors.
  • the motor mounting module includes a motor mounting portion gear receiving hole 302 positioned to be coaxial with the plurality of mounting shafts 90,92.
  • Drive motor 290 may be mounted to the module by any convenient means, which, in the preferred embodiment, comprise screws 304,306.
  • Base portion 300 includes a front surface area 308 having disposed therein a receiving recess 310 to be coaxial with tubelike members 34. Front surface area 308 is designed to be matingly received relative to a cam module assembly A primarily against wall members 24,26 and 30,32.
  • motor mounting module 296 may be manufactured from any suitable material, however, in the preferred embodiment, this module is molded from a rigid plastic material.
  • Adjustment assembly E is best shown in FIGS. 1 and 2 and includes a dial member 320 having disposed thereon a face member 322. This face member is graduated in accordance with the speed of rotation of drive motor 290 in order to calibrate the length of a timed sequence desired.
  • the dial member includes at the rear portion thereof a cam module engaging surface 324 having a lip surface 326 for mating engage ment with the top of the cam assembly mounting area on the adjacent cam module assembly A.
  • An adjustment knob 330 including a pointer 332 thereon, is disposed on one side of face 322 and includes a shaft portion 334 extending coaxially through the face and dial member and into the hollow area of the forward mounting shaft 90 of the adjacent cam assembly B.
  • a set screw 336 maintains shaft 334 in a stationary position relative to knob 330. Included adjacent the end of shaft portion 334 are grooves 338 and lands (not shown) similar to those previously discussed relative to shafts 90,92. These are for engagement with the grooves and lands of the hollow forward mounting shaft of the adjacent cam assembly in order that the adjustment assembly may be rigidly interconnected therewith.
  • the clutch assembly which has previously been assembled as shown in FIGS. 9 and 10, may be placed thereon with drive gear receiving hole 282 receiving the drive gear of the drive motor.
  • the first cam module assembly A utilizing the cam assembly A having cam member 110 and with the associated control switch 70 and ac tuator arm 50 installed thereon, may be placed adjacent motor mounting module 296.
  • the lands and grooves of shaft 90, integral with drive ratchet ring 250 engage the corresponding lands and grooves of hollow rearwardly extending mounting shaft 92 of cam member 110.
  • base area 12 specifically edge 22 and wall members 24, 26, 30 and 32, engages front surface area 308 of base portion 300.
  • each base area 12 of a cam module assembly mates with base area 12 of the adjacent cam module assembly and each of the front and rear mounting shafts 90,92 mates with the associated adjacent mounting shaft so as to form an integral unit.
  • cam module assemblies A When the desired number of cam module assemblies A are so mounted, they may be rigidly affixed to drive assembly D by an elongated bolt 350 extending through each of the tube-like members 34 and receiving recess 310 and maintained in this position by a nut 352 threadably received on the bolt.
  • adjustment assembly E may be located relative to the last cam module assembly A such that the end of shaft portion 334 is received in front mounting shaft 90 and the lands and grooves associated with the front mounting shaft are mated with the lands and grooves adjacent the shaft portion. Adjustment assembly E is retained in its position relative to the cam module by any convenient means, which, in the preferred embodiment, comprise a screw 354 engaging both dial member 320 and cam assembly mounting area 10 of the adjacent cam module assembly.
  • cam surfaces 114 on nonadjustable cam and control switch actuator elements 116 on non-adjustable cam 112 be placed in their desired oriented position during molding thereof.
  • cam surface portions 150,152 associated with cam hub 120 and cam surface portions 190,192 and 194 associated with cam hub 122 may be set at any time following assembly and adjusted thereafter to present any desired operational sequence. The adjustment steps are as has been hereinabove described.
  • To set the timer itself for a preselected timed sequence it is merely necessary to rotate the interconnected cam assemblies through the clutch assembly by rotating knob 330 generally clockwise in the view of FIG. 2 to a preselected time interval as shown on face 322.
  • Drive motor 290 is then energized to drive the cam assemblies in a counterclockwise direction in the view of FIG. 2 such that during rotation, each of the actuator heads 58 are moved to actuate the associated control switch 70 through control switch trip members 78 in response to communication with the associated cam surface portions as hereinabove previously described.
  • cam module assemblies A with cam assemblies B may be used than that shown in FIG. 1. It is merely necessary to lengthen or shorten bolt 350 to accommodate a greater or lesser number of these assemblies.
  • a repeat cycle timer using the concepts of the subject invention could be assembled using any combination of adjustable cam hubs similar to cam hubs 120,122 or non-adjustable cam members such as 110,112. The configuration of the timer need only be dictated by the specific work requirements.
  • Each control switch 70 may be connected to any number of circuits remote from the switch for energization thereby.
  • FIG. 12 A second embodiment of the subject invention is shown in FIG. 12 and comprises the utilization of a large drive gear.
  • drive motor 290 is removed from its position as shown in FIG. 1 relative to the first embodiment and inverted such that the motor drive gear is received through a second drive gear receiving hole 302 disposed in motor mounting portion 298 below drive gear receiving hole 302.
  • Clutch assembly C is removed from the timer when using this embodiment and a large drive gear 360 is inserted therefor which is interconnected between motor mounting module 296 and the first cam module assembly A and cam assembly B in a similar fashion to that as hereinabove described.
  • the drive gear of drive motor 290 engages teeth 362 spaced around the outer circumferential surface of gear 360 to effect driving of the cam assemblies.
  • this modification has the effect of reducing the speed at which the cams rotate and, in this second preferred embodiment, the reduction ratio is 10:1. Also in this second embodiment, the adjustment assembly is removed from the timer. The actual operation of the timer and the alternatives as to construction remain the same as described with reference to the first embodiment.
  • a timer mechanism for operating a plurality of elements in a predetermined sequence comprising:
  • a plurality of independent interchangeable stationary cam member support modules each including a cam member having a longitudinal axis and means for mounting said cam member for rotation about said axis relative to the associated module and means for locating at least one control switch adapted to control at least one of said elements said plurality of modules forming a frame for said timer;
  • cam surface areas disposed adjacent the outer peripheral surfaces of said cam members adapted for sequential engagement with actuating means for said switches.
  • each said cam member includes a coaxial shaft portion extending outwardly on at least one side thereof.
  • each said cam member includes a coaxial shaft portion extending outwardly on both sides thereof and said interconnecting means comprises interfitting groove areas at the end faces of each said shaft portion.
  • said modules include means for supporting at least one of said shaft portions of the associated cam member adjacent its interconnection with an adjacent shaft portion.
  • each said cam member further includes a hub portion having two opposed face portions and an outer circumferential surface portion, said coaxial shaft portion extending outwardly from one of said face portions generally normal thereto and including an end face; at least one of said cam surface areas disposed adjacent said circumferential surface portion; means for retaining said at least 'one cam surface area in a predetermined desired position about said cam hub; and, said means for rigidly interconnecting said cam member with other of said cam members being disposed at said end face of said shaft portion.
  • said retaining means comprises a plurality of outwardly extending longitudinal serrations on said outer circumferential surface portion and an area on said at least one of said face portions extending outwardly therefrom at least partially from said outer circumferential surface toward said axis.
  • both of said face portions include one of said outwardly extending areas, said outwardly extending areas comprising outwardly extending ring-like areas.
  • cam surfaces are separate from and cooperate with said cam members, said cam surfaces including at least one mounting bracket portion for resiliently engaging said retaining means.
  • each said mounting bracket portion comprises a generally U-shaped resilient clip member dimensioned such that the legs of said clip member are biased slightly outwardly from each other as said clip member is placed over said hub portion, at least one of said legs contacting oneof said face portions at said ringlike area.
  • cam member includes one of said shaft portions extending coaxially outwardly from each of said face portions, said interconnecting means comprising grooved areas at said end faces for matin engagement with other identical grooved areas.
  • e timer as defined in claim 1 further including means for rotating said cam members in unison to predetemiine the length of a timed sequence.
  • said clutch comprises a sprocket clutch including an outer drive ratchet ring member having a plurality of inwardly extending longitudinal serrations spaced around the inner circumference thereof and a clutch spider member having a plurality of outwardly extending arcuate fingers for receipt in said ratchet member and engagement with said serrations whereby said spider member may be rotated relative to said ring member in said one direction while being prevented from rotation in said other direction.
  • the timer as defined in claim 1 further including means for actuating said control switches, said actuating means being disposed so as to be moved between a normal non-actuating position and an actuating position relative to an associated control switch in response to rotational movement of said cam surfaces areas.
  • selected of said actuating means include means for retaining said actuating means in a normally actuating position relative to the associated control switches.
  • each said retaining means comprises a retaining member disposed for resilient retaining engagement with the associated module when said retaining means is moved to said actuating position.
  • an interchangeable cam member support module comprising:
  • the cam module as defined in claim 22 further including means for receiving actuating means for actuating said at least one control switch in response to rotational movement of said at least one cam member.
  • cam module as defined in claim 23 wherein said positioning means comprises a base area on said module positionable against other similar base areas and said mounting means comprises a mounting hole in the body of said module adapted to receive a mounting shaft for said at least one of said cam members.

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  • Electromechanical Clocks (AREA)
  • Mechanical Operated Clutches (AREA)
  • Surgical Instruments (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
US130100A 1971-04-01 1971-04-01 Repeat cycle timer of modular construction with improved adjustable cam Expired - Lifetime US3678225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13010071A 1971-04-01 1971-04-01

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US3678225A true US3678225A (en) 1972-07-18

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US130100A Expired - Lifetime US3678225A (en) 1971-04-01 1971-04-01 Repeat cycle timer of modular construction with improved adjustable cam

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US (1) US3678225A (enExample)
DE (2) DE7201486U (enExample)
FR (1) FR2131989B1 (enExample)
GB (1) GB1345689A (enExample)
IT (1) IT948337B (enExample)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852542A (en) * 1973-09-14 1974-12-03 S & C Electric Co Adjustable cam multiple contact switch arrangement
US3988553A (en) * 1974-05-09 1976-10-26 Michael J. Cozy Lighting control
US4004497A (en) * 1974-05-22 1977-01-25 Scholin Industries, Inc. Automatic systems programmer
US4006649A (en) * 1973-12-17 1977-02-08 Inventors Engineering, Inc. Single shaft programming control for machine tools
US4031339A (en) * 1975-12-15 1977-06-21 Amf Incorporated Modular time sequence controller
US4351200A (en) * 1979-04-30 1982-09-28 Emerson Electric Co. Removable snap-on actuators for program timer dial
US4381431A (en) * 1981-04-24 1983-04-26 Gulf & Western Manufacturing Company Hand set timer
US4507526A (en) * 1981-02-09 1985-03-26 Dieter Graesslin Feinwerktechnik Module unit time switch disk assembly
US5033327A (en) * 1989-10-10 1991-07-23 General Motors Corporation Camshaft phasing drive with wedge actuators
US5298700A (en) * 1992-01-30 1994-03-29 Neles-Jamesbury, Inc. Limit switch module and cam for use in the same
US6188030B1 (en) * 1998-10-02 2001-02-13 France/Scott Fetzer Company Adjustment apparatus for a cam
DE102007030316A1 (de) * 2007-04-24 2008-10-30 Spohn+Burkhardt Gmbh & Co. Halterungsschalen für Mikroschalter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915526C2 (de) * 1979-04-18 1982-04-22 Theben-Werk Zeitautomatik Gmbh & Co Kg, 7452 Haigerloch Schaltuhr mit einem über ein Richtgesperre angetriebenen, einstellbaren Zeitschaltorgan
JPS6232369A (ja) * 1985-08-02 1987-02-12 Honda Motor Co Ltd 角減速度センサ
US5142460A (en) * 1990-11-26 1992-08-25 Mcatee Jack Energy saving lighting showroom display unit
GB2385307B (en) * 2002-02-18 2004-03-31 Yong Hock Lawrence Sim Dual drive (automotive air-conditioning) compressor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110776A (en) * 1960-05-23 1963-11-12 Kaiser Steel Corp Timer switching mechanism
US3221117A (en) * 1963-09-09 1965-11-30 Mallory & Co Inc P R Adjustable cam time sequence control
US3325609A (en) * 1965-08-02 1967-06-13 Jon L Otterlei Timer switch controlled by push button and motor operated cams

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887223A (en) * 1928-08-23 1932-11-08 Landis & Gyr Ag Switch actuating mechanism
US2146562A (en) * 1935-09-18 1939-02-07 Gen Electric Time switch
DE900846C (de) * 1949-11-01 1955-03-07 Junghans Geb Ag Schaltuhr
US2566014A (en) * 1950-04-21 1951-08-28 Apex Electrical Mfg Co Timing device
DE1176737B (de) * 1958-11-17 1964-08-27 Licentia Gmbh Schaltuhr
US3170330A (en) * 1960-01-19 1965-02-23 Febco Inc Timing controller
DE1180821B (de) * 1962-10-22 1964-11-05 Licentia Gmbh Schaltuhr
CH432903A (de) * 1966-01-20 1967-03-31 Landis & Gyr Ag Schaltwerk
DE1991782U (de) * 1968-04-29 1968-08-14 Schleicher G M B H & Co Komman Freilaufgesperre.
US3546586A (en) * 1968-07-17 1970-12-08 Eastman Kodak Co Meter movement utilizing magnetic fluid for damping
US3569992A (en) * 1969-03-06 1971-03-09 Ind Timer Corp Electromechanical timer mechanism with improved modular housing construction with adjustable cam operating means
DE1921599A1 (de) * 1969-04-28 1970-11-12 Hombak Maschinenfab Kg Anlage zur Stirnholzverleimung mittels Keilzinken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110776A (en) * 1960-05-23 1963-11-12 Kaiser Steel Corp Timer switching mechanism
US3221117A (en) * 1963-09-09 1965-11-30 Mallory & Co Inc P R Adjustable cam time sequence control
US3325609A (en) * 1965-08-02 1967-06-13 Jon L Otterlei Timer switch controlled by push button and motor operated cams

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852542A (en) * 1973-09-14 1974-12-03 S & C Electric Co Adjustable cam multiple contact switch arrangement
US4006649A (en) * 1973-12-17 1977-02-08 Inventors Engineering, Inc. Single shaft programming control for machine tools
US3988553A (en) * 1974-05-09 1976-10-26 Michael J. Cozy Lighting control
US4004497A (en) * 1974-05-22 1977-01-25 Scholin Industries, Inc. Automatic systems programmer
US4031339A (en) * 1975-12-15 1977-06-21 Amf Incorporated Modular time sequence controller
US4351200A (en) * 1979-04-30 1982-09-28 Emerson Electric Co. Removable snap-on actuators for program timer dial
US4507526A (en) * 1981-02-09 1985-03-26 Dieter Graesslin Feinwerktechnik Module unit time switch disk assembly
US4381431A (en) * 1981-04-24 1983-04-26 Gulf & Western Manufacturing Company Hand set timer
US5033327A (en) * 1989-10-10 1991-07-23 General Motors Corporation Camshaft phasing drive with wedge actuators
US5298700A (en) * 1992-01-30 1994-03-29 Neles-Jamesbury, Inc. Limit switch module and cam for use in the same
US6188030B1 (en) * 1998-10-02 2001-02-13 France/Scott Fetzer Company Adjustment apparatus for a cam
DE102007030316A1 (de) * 2007-04-24 2008-10-30 Spohn+Burkhardt Gmbh & Co. Halterungsschalen für Mikroschalter
DE102007030316B4 (de) * 2007-04-24 2015-12-03 Spohn+Burkhardt Gmbh & Co. Halterungsschalen für Mikroschalter, Schaltkontaktmodul und Steuerschalter

Also Published As

Publication number Publication date
DE2201926A1 (de) 1972-10-05
IT948337B (it) 1973-05-30
GB1345689A (en) 1974-01-30
DE7201486U (de) 1972-04-13
DE2201926C3 (de) 1983-06-01
FR2131989B1 (enExample) 1977-07-15
FR2131989A1 (enExample) 1972-11-17
DE2201926B2 (de) 1978-06-22

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