Patent US3752537A successfully refreshed from Google Patents.
Patent US3735260A successfully refreshed from Google Patents.
US3735260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse counting linear measuring device
Assignee: Doosan Bobcat North America Inc
•
Filing: 1971-08-11
•
Granted: 1973-05-22
•
Expires: 1991-08-11
Abstract
Abstract This is a pulse counting linear measuring and recording device utilizing a ''''fifth wheel'''' associated with a photocell to produce an electrical pulse each 0.1 foot of linear travel. The electrical pulses are counted and a larger pulse produced for each 1 foot of travel and a still larger pulse produced for each 10 feet of travel. These pulses are then presented vertically on a chart moving at a horizontal uniform rate. Provision is made for time interval presentation on the chart. The time interval may be automatically set at 6.82 seconds so that the counting of the 10 foot pulses gives equivalent miles per hour speed. The time interval also may be mechanically set at a desired starting event and ending event for a particular cycle.
Inventors
- 👤 R Hartline
- 👤 C Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:18
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/64; G01P3/68; G01P15/00; G01P3/42; G01P3/44; G01P3/48; G01P3/4802
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
Apparatus for measuring and recording distance and time comprising: means for producing electrical pulses at predetermined distance intervals, means for counting said electrical pulses and producing a predetermined multiple pulse of greater magnitude than said first mentioned pulses for each tenth of said electrical pulses, chart means driven at a uniform velocity, means for recording the magnitude of said pulses on said chart means in a direction normal to the direction of movement of said chart, including a first switching means for starting the sequence of counting, a second switching means for stopping said sequence of counting, said first switching means resetting said means for counting said electrical pulses whereby said multiple pulse of greater magnitude occurs ten electrical pulses after the closing of said switch.
Claim 2
Dependent Claim
126 words
Apparatus for measuring and recording distance and time comprising: means for producing electrical pulses at predetermined distance intervals, means for counting said electrical pulses and producing a predetermined multiple pulse of greater magnitude than said first mentioned pulses for each tenth of said electrical pulses, chart means driven at a uniform velocity, means for recording the magnitude of said pulses on said chart means in a direction normal to the direction of movement of said chart, including a first switching means for starting the sequence of counting, a second switching means for stopping said sequence of counting, said first switching means resetting said means for counting said electrical pulses whereby said multiple pulse of greater magnitude occurs ten electrical pulses after the closing of said switch.
Claim 3
Dependent Claim
34 words
Apparatus for measuring and recording distance and time as claimed in claim 1 in which; said second switching means is automatically actuated a preselected time interval after the actuation of said first switching means.
Claim 4
Dependent Claim
33 words
Apparatus for measuring and recording distance and time as claimed in claim 1 including; means for indicating on said chart means the activation of said first switching means and said second switching means.
Claim 5
Dependent Claim
35 words
Apparatus for measuring and recording distance and time as claimed in claim 2 including; means for indicating on said chart means the time of actuation of said first switching means and said second switching means.
Claim 6
Dependent Claim
55 words
Apparatus for measuring and recording distance and time as claimed in claim 2; one set of pulses produced on said chart are spaced at 10 foot distance intervals, and said time interval is 6.82 seconds whereby, the number of said pulses produced on said chart is equal to the average speed in miles per hour.
Claim 7
Dependent Claim
71 words
Apparatus for measuring and recording distance and time as claimed in claim 4 in which; one set of pulses recorded on said chart are spaced to indicated 10 foot distance intervals and, the time interval between the actuation of said first switching means and said second switching means is 6.82 seconds whereby, the number of pulses indicated on said chart equals the speed being measured and recorded in miles per hour.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |