US3737655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light pen
Assignee: AT&T Inc
•
Filing: 1971-03-08
•
Granted: 1973-06-05
•
Expires: 1991-03-08
Abstract
Abstract An improved light pen including an actuator switch which is affixed to the body of the light pen at an acute angle to its longitudinal axis.
Inventors
- 👤 F Blendinger
- 👤 D Littlefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:22
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/0354; G06F3/03542
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
A manually operated position signal generator for indicating a pointing position comprising an elongated pointing body having a sensing member at one end thereof and adapted to be held in the hand in the manner of a writing instrument grasped between the thumb, index finger and third finger, and a momentarily operatable switching member disposed on said pointing member at said one end and at an acute angle inclined toward said sensing member and adapted to be operated by the index finger to generate a component of force directed away from the pointing direction of said sensing member.
Claim 2
Dependent Claim
98 words
A manually operated position signal generator for indicating a pointing position comprising an elongated pointing body having a sensing member at one end thereof and adapted to be held in the hand in the manner of a writing instrument grasped between the thumb, index finger and third finger, and a momentarily operatable switching member disposed on said pointing member at said one end and at an acute angle inclined toward said sensing member and adapted to be operated by the index finger to generate a component of force directed away from the pointing direction of said sensing member.
Claim 3
Dependent Claim
18 words
A manually operated position signal generator according to claim 1 wherein said acute angle is substantially 45 degrees.
Claim 4
Dependent Claim
101 words
An improved light pen of the type including an elongated pencil-shaped pointing member with a light-sensing member at the pointing end thereof and adapted to be held in the hand by an operator in the manner of a writing instrument grasped between the thumb, index finger and third finger, wherein the improvement comprises an index finger operatable pushbutton switch disposed on said pointing member adjacent said pointing end and inclined at an acute angle toward said sensing member so as to generate, when operated by the index finger of the operator, a component of force directed away from said sensing member.
Claim 5
Dependent Claim
101 words
An improved light pen of the type including an elongated pencil-shaped pointing member with a light-sensing member at the pointing end thereof and adapted to be held in the hand by an operator in the manner of a writing instrument grasped between the thumb, index finger and third finger, wherein the improvement comprises an index finger operatable pushbutton switch disposed on said pointing member adjacent said pointing end and inclined at an acute angle toward said sensing member so as to generate, when operated by the index finger of the operator, a component of force directed away from said sensing member.
Claim 6
Dependent Claim
13 words
The improved light pen of claim 3 wherein said acute angle is 45*.
References Cited (Backward Citations)
US2949838A
Cited
US3129402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |