US4083120A — Electronic device for use as a teaching aid

Claim 1

Independent Claim 321 words

A teaching device, comprising: a base member having a planar surface portion on which a program card may be mounted; at least one read-out opening formed in said base member; switch means mounted on said base member and having first and second sets of switch contacts mounted coaxially with a rotatable shaft, and first and second wipers mounted on said shaft for rotation therewith, said first and second wipers respectively engageable with said first and second sets of switch contacts; a display member mounted on said shaft for rotation therewith, said display member bearing indicia which are selectively aligned with said read-out opening upon rotation of said shaft; an indicator light source mounted rearwardly of said display member for illuminating said indicia aligned with said read-out opening; a plurality of count indicating members mounted to a front-facing portion of said base member, said plurality of count indicating members being connected in common to an electrical source and individually connected to respective ones of said first set of switch contacts; and an electrical socket located in said base member for receiving a cooperating electrical terminal portion of a progarm card mounted on said base member, said electrical socket including a first set of terminals to each of which is electrically connected a corresponding one of said first set of switch contacts, a second set of terminals to each of which is electrically connected a corresponding one of said second set of switch contacts, a third set of terminals equal in number to said first set of terminals and between each two of which is connected one of a plurality of series-connected diodes, a fourth terminal to which said first and second wipers are commonly electrically connected, a fifth terminal electrically connected to ground, and a sixth terminal electrically connected to one terminal of said illuminated indicator light source, said indicator light source having a second terminal electrically connected to said electrical source.

Claim 2

Dependent Claim 321 words

A teaching device, comprising: a base member having a planar surface portion on which a program card may be mounted; at least one read-out opening formed in said base member; switch means mounted on said base member and having first and second sets of switch contacts mounted coaxially with a rotatable shaft, and first and second wipers mounted on said shaft for rotation therewith, said first and second wipers respectively engageable with said first and second sets of switch contacts; a display member mounted on said shaft for rotation therewith, said display member bearing indicia which are selectively aligned with said read-out opening upon rotation of said shaft; an indicator light source mounted rearwardly of said display member for illuminating said indicia aligned with said read-out opening; a plurality of count indicating members mounted to a front-facing portion of said base member, said plurality of count indicating members being connected in common to an electrical source and individually connected to respective ones of said first set of switch contacts; and an electrical socket located in said base member for receiving a cooperating electrical terminal portion of a progarm card mounted on said base member, said electrical socket including a first set of terminals to each of which is electrically connected a corresponding one of said first set of switch contacts, a second set of terminals to each of which is electrically connected a corresponding one of said second set of switch contacts, a third set of terminals equal in number to said first set of terminals and between each two of which is connected one of a plurality of series-connected diodes, a fourth terminal to which said first and second wipers are commonly electrically connected, a fifth terminal electrically connected to ground, and a sixth terminal electrically connected to one terminal of said illuminated indicator light source, said indicator light source having a second terminal electrically connected to said electrical source.

Claim 3

Dependent Claim 47 words

The teaching device according to claim 1, further comprising a program card having an electrical circuit thereon, said electrical circuit including electrical terminals extending from one edge portion of said card and mating with said electrical socket terminals when said card is mounted on said base member.

Claim 4

Dependent Claim 68 words

A teaching device according to claim 2, further comprising a plurality of exposed touch point contacts on said card and wherein said card electrical terminals include a plurality of card terminals electrically connected to said exposed touch point contacts and which mate with said second set of socket terminals, said program card bearing indicia adjacent each touch point contact corresponding to the indicia on said indicia bearing member.

Claim 5

Dependent Claim 118 words

The teaching device according to claim 3, further comprising: a probe member having one terminal connected to said indicator light source and a second terminal selectively engageable with said touch point contacts on said program card; wherein when said card is mounted on said base member, said indicator light source is electrically connected through said probe, a selected touch point contacted by said probe, a corresponding one of said plurality of card terminals, and a corresponding one of said second set of socket terminals to a corresponding one of said second set of switch contacts, wherein current flows through said indicator light source when said second wiper engages said corresponding one of said second set of switch contacts.

Claim 6

Dependent Claim 208 words

The teaching device according to claim 1, further comprising a program card having an electrical circuit thereon, said electrical circuit including electrical terminals extending from one edge portion of said card and mating with said electrical socket terminals when said card is mounted on said base member, said card terminals including: a first set of terminals which mate with said first set of socket terminals; a second set of terminals which mate with said third set of socket terminals and which are electrically connected directly to said first set of card terminals; third and fourth terminals which mate with said fourth and fifth socket terminals respectively, said third and fourth card terminals being electrically connected directly to each other; and a fifth terminal which mates with said sixth socket terminal, said fifth card terminal being electrically connected to said third and fourth card terminals; wherein when said program card is mounted on said base member, each said illuminating member is connected to its corresponding switch contact and is further connected to all succeeding switch contacts of said first set of switch contacts through said series-connected diodes; and wherein said first wiper and said indicator light source are connected to ground through said third, fourth, and fifth card terminals.

Claim 7

Dependent Claim 320 words

The teach device according to claim 1, further comprising a program card having an electrical circuit thereon, said electrical circuit including a plurality of exposed touch point cntacts and electrical terminals extending from one edge portion of said card and mating with said electrical socket terminals when said card is mounted on said base member, said card terminals including: a first set of terminals which mate with said first set of socket terminals; a second set of terminals which mate with said second set of socket terminals, said second set of card terminals being electrically connected to a corresponding one of said exposed touch point contacts; a third set of terminals which mate with said third set of socket terminals and which are electrically connected directly to said first set of card terminals; and third and fourth terminals which mate with said fourth and fifth socket terminals respectively, said third and fourth card terminals being electrically connected directly to each other; and a probe member having one terminal connected to said indicator light source and a second terminal selectively engageable with said touch point contacts on said program card; wherein when said program card is mounted on said base member, each said count indicating member is connected to its corresponding switch contact and is further connected to succeeding switch contacts of said first set of switch contacts through said series-connected diodes; said first and second wipers are connected to ground through said third and fourth card terminals; and said illuminated indicator is electrically connected through said probe, a selected touch point contacted by said probe, a corresponding one of said second set of card terminals, and a corresponding one of said second set of socket terminal to a corresponding one of said second set of switch contacts, such that current flows through said illuminated indicator when said second wiper engages said corresponding one of said second set of switch contacts.

Claim 8

Dependent Claim 219 words

The teaching device according to claim 1, further comprising: a program card having a recessed surface portion into which one of a plurality of indicia bearing inserts may be inserted, said recessed surface portion having an electrical circuit thereon composed of a plurality of touch points electrically connected in common, said card electrical circuit further comprising at least one terminal to which said touch points are commonly connected and which mates with one of said second set of socket terminals, and a pair of further terminals connected in common which mate with said fourth and fifth socket terminals to electrically connect said second wiper to ground when said program card is mounted on said base member; and a probe member having one terminal connected to said illuminated indicator and a second terminal selectively engageable with said touch points on said program card; wherein when said card is mounted on said base member, said illuminated indicator is electrically connected through said probe, a selected touch point contacted by said probe, said at least one card terminal and said one of said second set of socket terminals, wherein current flows through said indicator light source when said second wiper engages the switch contact of said second set of switch contacts connected to said one of said second set of socket terminals.

Claim 9

Dependent Claim 88 words

The teaching device according to claim 7, further comprising a plurality of inserts each selectively mountable in said recessed surface portion of said program card, said inserts each having a plurality of holes formed therein such that only one hole overlies one of said touch points, said inserts each having indicia thereon corresponding to a question and a plurality of answers such that the indicia corresponding to the correct answer to the question on the inlay lies adjacent to said at least one hole overlying said touch point.

Claim 10

Dependent Claim 116 words

The teaching device according to claim 1: said base member having a front upright wall, a back upright wall extending higher than said front wall, a recessed planar surface portion extending from an upper portion of said front wall to an intermediate portion of said back wall and a pair of side walls extending slightly higher than said planar surface portion to define lateral extremeties of said recessed surface portion; said read-out opening is formed in an upper portion of said back wall; said electrical socket is located at the junction of said back wall and said planar surface; and said plurality of count indicating members are mounted on said upper portion of said back wall.

Claim 11

Dependent Claim 16 words

The teaching device according to claim 1, wherein said count indicating members comprise light emitting diodes.

Claim 12

Dependent Claim 280 words

A teaching device, comprising: a base member having a planar surface portion on which a program card may be mounted; at least one read-out opening formed in said base member; switch means mounted on said base member and having a set of switch contacts mounted coaxially with a rotatable shaft, and a wiper mounted on said shaft for rotation therewith, said wiper engaging said set of switch contacts; a display member mounted on said shaft for rotation therewith, said display member bearing indicia which are selectively aligned with said read-out opening upon rotation of said shaft; an indicator light source mounted rearwardly of said display member for illuminating said indicia aligned with said read-out opening; a plurality of count indicating members mounted to a front-facing portion of said base member, said plurality of count indicating members being connected in common to an electrical source and individually connected to respective ones of said set of switch contacts; and an electrical socket located in said base member for receiving a cooperating electrical terminal portion of a program card mounted on said base member, said electrical socket including a first set of terminals to each of which is electrically connected a corresponding one of said set of switch contacts, a third set of terminals equal in number to said first set of terminals and between each two of which is connected one of a plurality of series-connected diodes, a fourth terminal to which said wiper is electrically connected, a fifth terminal electrically connected to ground and a sixth terminal electrically connected to one terminal of said indicator light source, said indicator light service having a second terminal electrically connected to said electrical source.

Claim 13

Dependent Claim 280 words

A teaching device, comprising: a base member having a planar surface portion on which a program card may be mounted; at least one read-out opening formed in said base member; switch means mounted on said base member and having a set of switch contacts mounted coaxially with a rotatable shaft, and a wiper mounted on said shaft for rotation therewith, said wiper engaging said set of switch contacts; a display member mounted on said shaft for rotation therewith, said display member bearing indicia which are selectively aligned with said read-out opening upon rotation of said shaft; an indicator light source mounted rearwardly of said display member for illuminating said indicia aligned with said read-out opening; a plurality of count indicating members mounted to a front-facing portion of said base member, said plurality of count indicating members being connected in common to an electrical source and individually connected to respective ones of said set of switch contacts; and an electrical socket located in said base member for receiving a cooperating electrical terminal portion of a program card mounted on said base member, said electrical socket including a first set of terminals to each of which is electrically connected a corresponding one of said set of switch contacts, a third set of terminals equal in number to said first set of terminals and between each two of which is connected one of a plurality of series-connected diodes, a fourth terminal to which said wiper is electrically connected, a fifth terminal electrically connected to ground and a sixth terminal electrically connected to one terminal of said indicator light source, said indicator light service having a second terminal electrically connected to said electrical source.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1981-04-10	1981-10-10	1982-04-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1985-04-10	1985-10-10	1986-04-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1989-04-10	1989-10-10	1990-04-11	$7700.00	Window Closed / Lapsed

Electronic device for use as a teaching aid

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag