US3735526A - Spring wind-up mechanism - Google Patents

Spring wind-up mechanism Download PDF

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Publication number
US3735526A
US3735526A US00126817A US3735526DA US3735526A US 3735526 A US3735526 A US 3735526A US 00126817 A US00126817 A US 00126817A US 3735526D A US3735526D A US 3735526DA US 3735526 A US3735526 A US 3735526A
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US
United States
Prior art keywords
wind
vehicle
spring
hub
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00126817A
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English (en)
Inventor
B Ensmann
E Nielsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ideal Toy Corp
View Master Ideal Group Inc
EIDP Inc
Original Assignee
Ideal Toy Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ideal Toy Corp filed Critical Ideal Toy Corp
Application granted granted Critical
Publication of US3735526A publication Critical patent/US3735526A/en
Assigned to CBS INC. reassignment CBS INC. NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: IDEAL TOY CORPORATION, A CORP OF DE
Assigned to IDEAL TOY CORPORATION reassignment IDEAL TOY CORPORATION NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: IDEAL TOY CORPORATION, A NY CORP.
Assigned to E. I. DU PONT DE NEMOURS AND COMPANY reassignment E. I. DU PONT DE NEMOURS AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FORD MOTOR COMPANY
Assigned to VIEW-MASTER IDEAL GROUP, INC., A CORP OF DE reassignment VIEW-MASTER IDEAL GROUP, INC., A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CBS INC., A CORP OF NY
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H29/00—Drive mechanisms for toys in general
    • A63H29/02—Clockwork mechanisms
    • A63H29/04—Helical-spring driving mechanisms
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H29/00—Drive mechanisms for toys in general
    • A63H29/24—Details or accessories for drive mechanisms, e.g. means for winding-up or starting toy engines

Definitions

  • the clutch arrangement provides a quickly engageable and releasable spring windup connection which is particularly useful as a fast pit stop" with top vehicle racing games and with toy vehicle launchers.
  • a vehicle launcher utilizing the wind-up clutch is described, wherein a pivotally mounted platform is inclined to convert it from a spring wind-up support surface to a toy vehicle launch ramp.
  • SHEET 1 [1F 3 1 SPRING WIND-UP MECHANISM FIELD OF THE INVENTION
  • This invention relates to a spring wind-up device for use with toys. It particularly concerns a clutch mechanism for winding up spring-driven vehicles.
  • a wind-up clutch driven member is mounted on the spring drive of the toy.
  • the driven member rotates about an axis and is op-' eratively coupled to the output drum for wind-up of a drive spring.
  • a wind-up mechanism is provided, and supports a driving clutch member with is rotated by an actuator and engages the driven clutch member to wind the toy drive spring. Both clutch members are provided with extending teeth located at axial ends of the clutch members for axial engagement with the teeth of the other clutch member.
  • the teeth are coaxially distributed about the axis of rotation of the clutch members, and surfaces of the teeth are slanted to form complementary re-entrant recesses sized to received the ex tending teeth of the other clutch member.
  • An advantageous feature of the wind-up mechanism of this invention resides in its quick engagement and release capability. This feature is particularly useful in connection with a toy vehicle race game or a toy vehicle launch apparatus in accordance with this invention.
  • the wind-up mechanism is located on a housing carrying a pivotally mounted platform that may be transformed into an inclined ramp when pivoted and seated upon a vehicle running surface.
  • the toy vehicle rests on the platform to-engage a driving clutch member mounted on the launcher.
  • the platform Upon completion of the wing-up of the spring in the toy vehicle, the platform is pivoted downward both to release the clutch members and to enable the vehicle to race off the ramp onto the running surface.
  • FIG. I is a perspective view of a wind-up mechanism in accordance with the invention, shown in conjunction with a vehicle spring drive, and with parts broken away to show constructional details.
  • FIG. 2 is an enlarged perspective view of clutch members employed in'accordance with the invention.
  • FIG. 3 is a top plan view of a toy vehicle wind-up and launch apparatus in accordance with the invention.
  • FIG. 4 is a side elevation view of the toy vehicle windup and launch apparatus of FIG. 3, with parts broken away and sectioned.
  • FIG. 5 is anend elevation view of the toy vehicle wind-up and launch apparatus of FIG. 3.
  • FIG. 6 is a section view of the toy vehicle wind-up and launch apparatus of FIG. 3 with the platform shown pivoted to a vehicle launching position.
  • FIG. 7 is a top plan view of an alternate wind-up mechanism in accordance with the invention.
  • FIG. 8 is a partial section view of the wind-up mechanism in FIG. 7, taken along the line 8-8 thereof, looking in the direction of the arrows.
  • a spring wind-up mechanism 10 is shown in conjunction with the spring drive 12 for a toy vehicle 11 (partially illustrated in FIG. 1).
  • the spring drive 12 is supported on a vehicle frame 13 and includes a spring 14, for example of the Negator type, which is normally wound on a take-up drum l6 and attached to a rotatable output drum 18 by a bolt 20.
  • the output drum 18 is mounted on a shaft 22 which is connected through a gear train 24 to drive axle 26 of the vehicle, whose rear wheels 27 only are shown.
  • the output drum 18 is provided with a driven clutch hub 28 which extends axially downwardly from the output drum for engagement with a driving clutch hub 30 of wind-up mechanism 10.
  • Both the driven clutch hub 28 and the driving clutch hub 30 are provided with axially extending, co-axially distributed teeth 34 34' respectively which are slanted circumferentially and raked at re-entrant angles to form recesses 36 36.
  • the teeth 34 34' are oriented in opposite angular directions so that upon engagement the teeth of each clutch hub fit within the recesses of the opposite clutch hub for positive drive of output drum 18.
  • the hubs 28 and 30 are molded of a plastic material such as high impact polystyrene, but the recesses 36 36' are bounded by re-entrant surfaces 37 preferably cut along radial lines by a cutting tool to form angles alpha of about 53. Note that if one of the hubs 28 or 30 were reversed relative to FIG. 2, the teeth 34 34 would extend in the same angular direction; thus, for ease of manufacture, a single set-up of the cutting tool can do all the re entrant surfaces 37 of both hubs.
  • the wind-up mechanism 10 includes a housing 38 which rotatably supports the driving hub 30.
  • a wind-up driver mounted on the housing is coupled to the windup hub 30.
  • the drive includes a disc 42 having manual drive facilities such as telephone style dialing finger holes or, in the preferred embodiment illustrated herein, a hand-grippable crank handle 44.
  • the driver 42 is mounted on a shaft 46 (see FIG. 4) connected to wind-up hub 30.
  • a pair of friction discs 43 are interposed in the drive train between the driver 42 and the hub 30 to prevent overwinding of the spring 14 and damage to the gear train 24 of the vehicle.
  • the vehicle gear train 24 includes a main driver gear 50 which is coaxially coupled to shaft 22 and engages a pinion 52 on a swing-shaft 54.
  • the shaft 54 is movably mounted to the frame 13 of the toy vehicle by means of shaft-receiving slots such as 58 formed in the vehicle frame 13. Slots 58 define the limits and direction of movement of swing shaft 54 so that a swing gear 60, connected to shaft 54, may be selectively brought into contact with a pinion 62 coaxially coupled to a crown gear 64.
  • the crown gear 64 in turn engages an axle pinion 66 mounted on vehicle drive axle 26.
  • the swing shaft 54 is so located that, during wind-up of spring 14 in the direction of arrow 67, a disengaging force is exerted on swing shaft 54 so that gear 60 is thus swung away from pinion 62.
  • spring wind-up may be obtained without simultaneously rotating the vehicle drive axle 26. This permits the toy vehicle to remain stationary, resting its wheels against the platform 72, during the wind-up operation.
  • Reverse rotation of gear 50 drives the swing gear 60 back into engagement with pinion 62.
  • a stop gear 68 is operatively coupled with a pinion 69 on shaft 22, and is provided with an interference segment 70.
  • the stop gear 68 serves to limit the range of the vehicle by virtue of the binding effect that the interference segment 70 has on the gear train 24.
  • the interference segment interrupts the spring drive 12 by engagement with larger pinion tooth 69a.
  • spring wind-up when the interference segment has been rotated into contact with pinion tooth 690, further winding is prevented. This bars overwinding of the drive spring 14.
  • FIGS. 3 through 6 shows a vehicle launch mechanism 100 which incorporates the described wind-up mechanism in a housing 138 sized to receive a toy vehicle on a pivotable platform 172.
  • the driving hub 30 is shown protruding through an aperture 74 in platform 172.
  • a vehicle positioning stanchion 76 is shown protruding through a slot 78 in platform 172. The stanchion 76 engages the rear end of the vehicle being wound so as to establish a precise position therefor, in which the vehicle is so located that the hubs 28 and 30 are in axial alignment to achieve winding engagement.
  • the platform 172 pivots about a horizontal axis 80 defined by pivot pins 81 affixed to the platform 172 and journaled on the housing 138.
  • the platform is longitudinally sized so that its front end 82 may be pivoted to seat against the surface 84 on which the toy vehicle launch mechanism 100 is located.
  • Surface 84 may be a floor, for example, or any other extended running surface for a toy vehicle.
  • the platform 172 is conveniently pivoted down into launching attitude by applying pressure on a side tab 86 provided therefor, until the front end 82 comes to rest upon surface 84 as shown in FIG. 6.
  • the toy vehicle 11 (seen in phantom in FIG. 6) is then automatically released from both the driving hub 30 and stanchion 76, and rushes down onto the surface 84 under the impetus of its spring motor.
  • each hub will help cam the teeth of the cooperating hubs angularly into circumferentially interspersed relationship, thus facilitating axial interpenetration.
  • the user picks up the launcher-winder device 100, to gain access to the drive crank 44 therebelow.
  • the driving hub rotates the points of its teeth 34 into angularly interpenetrating relationship with the reentrant recesses 36 of the driven hub teeth 34, thus completing the driving engagement between the hubs 28 and 30.
  • the re-entrant slopes alpha of teeth 34-34 cooperate to produce a downward retaining force on the vehicle 11 which keeps it clamped securely to the platform 172.
  • the re-entrant slopes alpha of teeth 34-34 cooperate to produce a downward retaining force on the vehicle 11 which keeps it clamped securely to the platform 172.
  • the vertical retention feature just described also serves to increase the security of the winding-forcetransmitting engagement between the hubs 28 and 30.
  • the user can wind as vigorously as he likes, without danger of disengagement. Indeed, the greater the winding torque exerted, the greater the retaining force component becomes.
  • the mechanism 200 represents a pit stop device for use with the toy vehicle competitive racing game described in the aforementioned co'pending application.
  • the mechanism 200 has a housing 238 with a surface 272 (corresponding to elements 38 and 72 respectively of FIG. 1) for supporting the toy vehicle 11 of the preceding figures, the driven hub 28 of which is engaged by a driving hub 30 in the manner desribed with respect to FIGS. 1 and 2.
  • the hub 30, as shown in FIG. 7, is part of an alternate wind-up mechanism 210, and is coaxially connected to the drive pinion 96 thereof.
  • the drive pinion 96 is engaged by a swing gear 98 which is mounted on a swing shaft 101.
  • the swing shaft is mounted for movement in a slot 102 formed in a housing 92.
  • An arcuately reciprocable drive lever 104 is mounted to housing 92 for pivotal movement about a shaft 106 between limits indicated by positions'lllS and 115'.
  • a slot 108 in housing 92 enables the lever to protrude from the housing 92 for accessibility of a cylindrical handle 117 at the outer end thereof.
  • the slot is also wide enough to permit reciprocation of lever 104 between its limit positions 115 115'.
  • the lever is provided with a gear segment 110 which engages a pinion 112 mounted on swing shaft 101.
  • the pit stop winding mechanism 200 In the operation of the pit stop winding mechanism 200, the latter remains flat on the floor, and only the vehicle 1 I is moved, for the fastest possible winding operation.
  • the vehicle is placed over the hub 30, using a fixed surface 276, corresponding to the stanchion 76 of launcher 100, as a vehicle positioning guide.
  • the hubs 28 and 30 mesh axially as the vehicle is placed in position, and then mesh angularly as winding torque is applied, all as described in connection with launcher 100.
  • the lever 104 is operated from the side of mechanism 200 instead of from underneath, so as to avoid the need for picking up the launcher and thus hasten the pit stop" winding operation.
  • a pair of friction discs 1 16 are operatively interposed between they drive pinion 96 and the drive hub 30.
  • the axially extending teeth on the clutch hubs engage and disengage with the utmost speed and ease, and without the need for any attention specifically directed thereto.
  • the vertical toy retention feature is useful in precluding disengagement despite vigorous winding, and is particularly advantageous in connection with the combination launcher and wind-up mechanism.
  • the hubs engage one another through an opening in the launching ramp to maintain the vehicle in a horizontal position until the spring has been wound, and then the ramp is tilted for launching, while the hubs disengage automatically.
  • a toy having a spring drive comprising a spring, a driven hub mounted on the toy for rotation about an axis and operatively coupled to said spring to wind the spring upon rotation of the driven hub in a first direction, said driven hub being provided with extending teeth concentrically arranged about the driven hub axis of rotation; and a wind-up mechanism including a housing and a driving hub mounted for rotation on the housing, said driving hub being provided with extending teeth concentrically arranged about the axis of rotation of the driving hub, the teeth on each of said hubs being located on an axial end of the respective hub for axial engagement with the teeth of the other hub upon placing the toy upon the housing with the driving and driven hubs axially aligned, said teeth on each of said hubs extending axially and being shaped to slant in mutually complementary circumferential directions to form re-entrant capturing recesses for receiving the teeth of the other hub whereby to provide simultaneously both positive angular engagement between hubs and axial retention of
  • a wind-up mechanism for a spring-driven toy vehicle comprising:
  • a housing adapted to rest on a support surface for receiving the toy vehicle
  • a toy vehicle launching platform pivotally supported by the housing, said launching platform being arranged to form an inclined ramp the lower end of which rests on the support surface when the ramp is pivoted to a launch position;
  • the means for winding the spring includes a drive hub rotatably mounted on the housing and extending upwardly through an aperture in the platform when said platform is pivoted out of said launch position to a substantially horizontal winding position, said aperture being located on the side of said platform which moves upwardly about the pivot axis thereof when pivoted from said winding position to said launching position, said hub being provided with teeth oriented to releasably engage the spring-driven vehicle for wind-up thereof when said ramp is in said winding position, and to release said vehicle as it moves upwardly in response to movement of said platform to said launching position.
  • wind-up mechanism as in claim 4 wherein the I ing said spring drive from said drive wheels in response to winding torque exerted on said driven hub when rotation of said drive wheels is restrained, and said windup mechanism includes means for engaging said vehicle drive wheels when said hubs are in winding engagement so that said axial retention effect restrains rotation of said vehicle drive wheels by friction against said engaging means, and said drive wheels are then disconnected from said output drum.
  • said drive train disconnecting means includes first gear means connected to said spring drive, second gear means connected to said vehicle drive wheels, swing gear means connecting said first and second gear means for motive power transmission to said drive wheels, a swing shaft mounting said swing gear means, and a vehicle frame including slot means elongated to mount said swing shaft for movement in a direction to disconnect said first and second gear means in response to winding torque applied to said first gear means when said vehicle drive wheels are restrained to prevent said winding torque from rotating said second gear means.
  • a wind-up mechanism for a spring-driven toy vehicle comprising:
  • a housing a toy vehicle supporting surface on said housing to receive the toy vehicle in a predetermined position;
  • slip-type clutch means connecting said handle to said rotatable means to prevent overwinding of the spring-driven toy vehicle.
  • a second friction disc attached to said rotatable means to drive the same and frictionally engaging said first friction disc to be rotated thereby.
  • wind-up mechanism as in claim 11 comprising, in addition:
  • wind-up mechanism as in claim 10 comprising, in addition, a second shaft mounted on said housing, and said winding handle is pivotally mounted on said second shaft, and said gear means comprises a gear segment mounted on said second shaft and attached to said handle and a driven gear rotatably mounted on said first-named shaft and connected to said second friction disc.
  • wind-up mechanism as in claim 14 comprising, in addition, intermediate gear means connecting said gear segment to said driven gear, said handle extendig from said housing and being pivotally movable in a limited arc.
US00126817A 1971-03-22 1971-03-22 Spring wind-up mechanism Expired - Lifetime US3735526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12681771A 1971-03-22 1971-03-22

Publications (1)

Publication Number Publication Date
US3735526A true US3735526A (en) 1973-05-29

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ID=22426848

Family Applications (1)

Application Number Title Priority Date Filing Date
US00126817A Expired - Lifetime US3735526A (en) 1971-03-22 1971-03-22 Spring wind-up mechanism

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Country Link
US (1) US3735526A (de)
JP (1) JPS5511070B1 (de)
AU (1) AU460011B2 (de)
CA (1) CA957847A (de)
DE (1) DE2213666A1 (de)
FR (1) FR2131533A5 (de)
GB (1) GB1373876A (de)
IT (1) IT950323B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373293A (en) * 1979-10-23 1983-02-15 Tomy Kogyo Co., Inc. Toy racing game
US5052973A (en) * 1990-12-10 1991-10-01 Tonka Corporation Toy car launcher with cable driven shuttle and pulleys
US5316514A (en) * 1992-02-13 1994-05-31 Matchbox Toys (Usa) Ltd. Toy vehicle and launcher system
US20060211333A1 (en) * 2004-08-25 2006-09-21 Jakks Pacific, Inc. Toy vehicle with a detachably attachable wheel
US20080176483A1 (en) * 2005-07-14 2008-07-24 Brian Rosenblum Toy for rotating and launching an object
US20090227178A1 (en) * 2005-07-14 2009-09-10 Jakks Pacific, Inc. Toy for rotating and launching an object
CN105834755A (zh) * 2016-05-16 2016-08-10 东莞市新亮点自动化设备科技有限公司 多重折弯发条卷绕组装机构
USD790636S1 (en) * 2015-03-20 2017-06-27 Tomy Company, Ltd. Launching apparatus for spinning toy top
USD790635S1 (en) * 2015-03-20 2017-06-27 Tomy Company, Ltd. Launching apparatus for spinning toy top
US9707488B2 (en) 2013-05-03 2017-07-18 Mattel, Inc. Toy vehicle, launching apparatus therefor and methods of using the same
US10352371B2 (en) 2017-03-21 2019-07-16 New Bright Industrial Co., Ltd. Protective clutch assembly for toys and method of making the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160738A (en) * 1938-04-29 1939-05-30 Horn Ernst Device for winding up spring-driven clockworks of toy vehicles
US2553593A (en) * 1947-07-10 1951-05-22 Eastern Metals Res Co Inc Toaster
DE1905263A1 (de) * 1969-02-04 1970-08-06 Faller Gmbh Geb Vorrichtung zum Beschleunigen von Modellfahrzeugen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2160738A (en) * 1938-04-29 1939-05-30 Horn Ernst Device for winding up spring-driven clockworks of toy vehicles
US2553593A (en) * 1947-07-10 1951-05-22 Eastern Metals Res Co Inc Toaster
DE1905263A1 (de) * 1969-02-04 1970-08-06 Faller Gmbh Geb Vorrichtung zum Beschleunigen von Modellfahrzeugen

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373293A (en) * 1979-10-23 1983-02-15 Tomy Kogyo Co., Inc. Toy racing game
US5052973A (en) * 1990-12-10 1991-10-01 Tonka Corporation Toy car launcher with cable driven shuttle and pulleys
US5316514A (en) * 1992-02-13 1994-05-31 Matchbox Toys (Usa) Ltd. Toy vehicle and launcher system
US7445539B2 (en) * 2004-08-25 2008-11-04 Jakks Pacific, Incorporated Toy vehicle with a detachably attachable wheel
US20060211333A1 (en) * 2004-08-25 2006-09-21 Jakks Pacific, Inc. Toy vehicle with a detachably attachable wheel
US20090227178A1 (en) * 2005-07-14 2009-09-10 Jakks Pacific, Inc. Toy for rotating and launching an object
US20080176483A1 (en) * 2005-07-14 2008-07-24 Brian Rosenblum Toy for rotating and launching an object
US7950976B2 (en) 2005-07-14 2011-05-31 Jakks Pacific, Inc. Toy for rotating and launching an object
US8128454B2 (en) 2005-07-14 2012-03-06 Jakks Pacific, Inc. Toy for rotating and launching an object
US9707488B2 (en) 2013-05-03 2017-07-18 Mattel, Inc. Toy vehicle, launching apparatus therefor and methods of using the same
USD790636S1 (en) * 2015-03-20 2017-06-27 Tomy Company, Ltd. Launching apparatus for spinning toy top
USD790635S1 (en) * 2015-03-20 2017-06-27 Tomy Company, Ltd. Launching apparatus for spinning toy top
CN105834755A (zh) * 2016-05-16 2016-08-10 东莞市新亮点自动化设备科技有限公司 多重折弯发条卷绕组装机构
CN105834755B (zh) * 2016-05-16 2017-12-29 东莞市新亮点自动化设备科技有限公司 多重折弯发条卷绕组装机构
US10352371B2 (en) 2017-03-21 2019-07-16 New Bright Industrial Co., Ltd. Protective clutch assembly for toys and method of making the same

Also Published As

Publication number Publication date
DE2213666A1 (de) 1972-10-05
IT950323B (it) 1973-06-20
AU4017072A (en) 1973-09-27
JPS5511070B1 (de) 1980-03-21
GB1373876A (en) 1974-11-13
CA957847A (en) 1974-11-19
FR2131533A5 (de) 1972-11-10
AU460011B2 (en) 1975-03-24

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AS Assignment

Owner name: CBS INC., 51 WEST 52ND STREET, NEW YORK, NY 1001

Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:IDEAL TOY CORPORATION, A CORP OF DE;REEL/FRAME:004210/0055

Effective date: 19831108

Owner name: IDEAL TOY CORPORATION 184-10 JAMAICA AVENUE HOLLIS

Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:IDEAL TOY CORPORATION, A NY CORP.;REEL/FRAME:004210/0050

Effective date: 19720410

AS Assignment

Owner name: VIEW-MASTER IDEAL GROUP, INC., 200 FIFTH AVENUE, N

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. AS OF JANUARY 21, 1986.;ASSIGNOR:CBS INC., A CORP OF NY;REEL/FRAME:004648/0575

Effective date: 19861107

Owner name: E. I. DU PONT DE NEMOURS AND COMPANY, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FORD MOTOR COMPANY;REEL/FRAME:004660/0502

Effective date: 19861118

Owner name: VIEW-MASTER IDEAL GROUP, INC., A CORP OF DE,NEW YO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CBS INC., A CORP OF NY;REEL/FRAME:004648/0575

Effective date: 19861107

Owner name: E. I. DU PONT DE NEMOURS AND COMPANY, WILMINGTON,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FORD MOTOR COMPANY;REEL/FRAME:004660/0502

Effective date: 19861118