US3597981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard-testing device for calculating machine or the like
Assignee: Asahi Automatic Machine Tool Works Co Ltd
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Filing: 1969-10-14
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Granted: 1971-08-10
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Expires: 1989-10-14
Abstract
Abstract A keyboard-testing device for a calculating machine having keys on its keyboard or the like. A plurality of air cylinders are mounted on a panel board just above the keyboard of the calculating machine to be tested so as to depress any one of the keys. A plurality of control valves are connected to the respective air cylinders so as to supply and cut off compressed air from a compressor. An order system and electric control means is provided for controlling the operation of each of said control valves.
Inventors
- 👤 Hiroyoshi Wakabayashi
- 👤 Yousuke Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:21
CPC Classifications
G; G01; G01M; G01M99/00; G01M99/008; B; B41; B41J; B41J29/00; B41J29/38; B41J29/393
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
193 words
A keyboard-testing device for testing a calcUlating machine or the like having keys on a keyboard, said device comprising a panel board, means on which said panel board is adjustably mounted for adjustment relative to a position parallel to and above a keyboard, a plurality of air cylinders mounted on said panel board in positions corresponding to the positions of the keys on the keyboard and each having a piston rod extending out of the air cylinder in a direction transverse to the panel and toward the keyboard, the free end of each piston rod having a pad on the end thereof, compressed air supply means coupled to each of said air cylinders for driving the pistons toward the keys of the keyboard, spring means in each air cylinder for returning the pistons upon release of the air pressure, a plurality of control valves, one in each of the compressed air supply means, for controlling the supply of compressed air to said air cylinders, valve actuating means for actuating said valves, sand control means for controlling the valve actuating means according to a predetermined program for testing the calculating machine or the like.
Claim 2
Dependent Claim
193 words
A keyboard-testing device for testing a calcUlating machine or the like having keys on a keyboard, said device comprising a panel board, means on which said panel board is adjustably mounted for adjustment relative to a position parallel to and above a keyboard, a plurality of air cylinders mounted on said panel board in positions corresponding to the positions of the keys on the keyboard and each having a piston rod extending out of the air cylinder in a direction transverse to the panel and toward the keyboard, the free end of each piston rod having a pad on the end thereof, compressed air supply means coupled to each of said air cylinders for driving the pistons toward the keys of the keyboard, spring means in each air cylinder for returning the pistons upon release of the air pressure, a plurality of control valves, one in each of the compressed air supply means, for controlling the supply of compressed air to said air cylinders, valve actuating means for actuating said valves, sand control means for controlling the valve actuating means according to a predetermined program for testing the calculating machine or the like.
Claim 3
Dependent Claim
54 words
A keyboard-testing device as claimed in claim 1 in which said valves are mechanically actuated valves, and said valve-actuating means and said control means comprise a cam disc positioned adjacent said valves and movable relative to said valves for actuating said valves in a predetermined sequence, and motor means for driving said cam disc.
Claim 4
Dependent Claim
46 words
A keyboard-testing device as claimed in claim 1 in which said valves are solenoid actuated valves, and said valve-actuating means and said control means comprise an electric power supply to said valves and means for controlling the power supply to said valves in a predetermined sequence.
References Cited (Backward Citations)
US3003694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |