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US4049952A
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Intermittence-responsive working-time indicator
Assignee: Individual
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Filing: 1976-05-03
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Granted: 1977-09-20
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Expires: 1996-05-03
Abstract
Abstract A working-time indicator that resets itself to a zero position as soon as the supervised work is interrupted for a predetermined, preferably adjustable minimum period of time but neglects all pauses of a shorter duration comprises, in combination, a first or working-time meter that is adapted to measure and indicate the duration of a single period or a succession of spaced periods between an arbitrary number of start and stop pulses received thereby, said first meter being resettable to a zero position by means of a resetting pulse, and a second or idling-time meter that is adapted to measure the period of time following immediately after each stop pulse to said first meter and to compare the length of each such period of idling with a preferably adjustable reference value, means being provided for automatically resetting said second meter to a zero position, if and when said first meter receives a new start pulse before the length of the period of idling has reached the reference value, and means being also provided for supplying a resetting pulse to said first meter at the very moment when the length of the period of idling measured by said second meter equals said reference value.
Inventors
- 👤 Erik Ejnar Forsslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:36
CPC Classifications
G; G04; G04F; G04F1/00; G04F1/005; G07; G07C; G07C1/00; G07C1/02; G07C3/00; G07C3/02; G07C3/04; G07C5/00; G07C5/02; G07C5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
288 words
An intermittence-responsive working-time indicator comprising in combination I. a first time meter operative as a working-time meter and including a. means for measuring and indicating the duration of a single period between a start pulse and a subsequent stop pulse supplied to said first meter as well as the total duration of an arbitrary number of interspaced such periods while neglecting the intervals between them, and b. means for resetting said first time meter to a zero position at the receipt of a resetting pulse, Ii. a second time meter operative as an idling-time meter and including a. means for measuring the idling-time following immediately after each stop pulse to said first time meter, and b. means for resetting said second time meter to a zero position at the receipt of a resetting pulse through either one of two separate reset inputs thereof, Iii. means for comparing the idling-time measured by said second time meter with a stored value and for supplying a pulse to said resetting means of the first time meter as well as to one of said separate reset inputs of said resetting means of the second time meter at the very moment when the measured idling-time equals said stored value, Iv. means for supplying a resetting pulse to the other one of said separate reset inputs of said resetting means of the second time meter at the receipt of each start pulse to said first time meter, and V. means for starting the operation of said second time meter whenever a stop pulse is received by said first time meter, and for stopping the operation therof whenever it has become properly reset by a resetting pulse supplied to either one of its reset inputs.
Claim 2
Dependent Claim
288 words
An intermittence-responsive working-time indicator comprising in combination I. a first time meter operative as a working-time meter and including a. means for measuring and indicating the duration of a single period between a start pulse and a subsequent stop pulse supplied to said first meter as well as the total duration of an arbitrary number of interspaced such periods while neglecting the intervals between them, and b. means for resetting said first time meter to a zero position at the receipt of a resetting pulse, Ii. a second time meter operative as an idling-time meter and including a. means for measuring the idling-time following immediately after each stop pulse to said first time meter, and b. means for resetting said second time meter to a zero position at the receipt of a resetting pulse through either one of two separate reset inputs thereof, Iii. means for comparing the idling-time measured by said second time meter with a stored value and for supplying a pulse to said resetting means of the first time meter as well as to one of said separate reset inputs of said resetting means of the second time meter at the very moment when the measured idling-time equals said stored value, Iv. means for supplying a resetting pulse to the other one of said separate reset inputs of said resetting means of the second time meter at the receipt of each start pulse to said first time meter, and V. means for starting the operation of said second time meter whenever a stop pulse is received by said first time meter, and for stopping the operation therof whenever it has become properly reset by a resetting pulse supplied to either one of its reset inputs.
Claim 3
Dependent Claim
13 words
A working-time indicator according to claim 1 wherein said stored value is adjustable.
Claim 4
Dependent Claim
26 words
A working-time indicator according to claim 1 wherein means are provided for blocking said first meter, when the working-time indicated thereby reaches a selected maximum value.
Claim 5
Dependent Claim
27 words
A working-time indicator according to claim 1 wherein means are provided for releasing a signal when the working-time indicated by said first meter reaches a selected value.
Claim 6
Dependent Claim
70 words
A working-time indicator according to claim 1 wherein said first meter is combined with a storage unit for memorizing a working-time value previously indicated by said first meter in a manner to make said memorized value readable at a later time, if needed, and wherein means are provided for automatically recording in said storage unit each value indicated by said first meter every time the latter receives a resetting pulse.
Claim 7
Dependent Claim
30 words
A working-time indicator according to claim 5 wherein said storage unit is of the kind from which a previously recorded value is automatically erased when a new value is entered.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |