Patent US3618115A successfully refreshed from Google Patents.
US3618115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terrain profile recorder
Assignee: Individual
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Filing: 1969-07-17
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Granted: 1971-11-02
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Expires: 1989-07-17
Abstract
Abstract An instrument for simultaneously measuring the slope and distance traversed by a vehicle as an aid in determining the profile of the terrain over which a vehicle is driven, having particular utility in highway construction. A beam mounted parallel to the direction of travel of a vehicle carries a pen. The beam is weighted so that it is parallel to the direction of travel and is horizontal. The pen marks chart paper which is advanced in proportion to the distance the vehicle moves and which is horizontal when the vehicle is level and tilts as the vehicle tilts. The pen marking the chart thus records the slope of the terrain and distance travelled. Damping means prevents overtravel of the pen or uneven terrain.
Inventors
- 👤 Komad Parsazad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:06
CPC Classifications
G; G01; G01C; G01C7/00; G01C7/02; G01C7/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
A terrain profile measuring apparatus for mounting on a vehicle comprising, a base, means for mounting said base on a vehicle with said base horizontal when said vehicle is horizontal and also aligned relative to the direction of travel of said vehicle, a shaft, means pivotally mounting said shaft parallel to said base and transverse to said direction of travel, a beam fixed on one end of said shaft and oscillating about the axis of said shaft in a plane parallel to said direction of travel, a pen on said beam, a weight fixed below said shaft tending to keep said beam parallel to said base, chart drive means on said base including means for guiding a chart past said pen in a direction parallel to said base and to said direction of travel, drive means adapted for connection to a wheel of said vehicle for driving said chart drive means proportional to the distance traversed by said vehicle, a drum mounted on said base and surrounding a portion of said shaft and said weight, said drum enclosing fluid, and vanes in said drum rotatable with said shaft.
Claim 2
Dependent Claim
188 words
A terrain profile measuring apparatus for mounting on a vehicle comprising, a base, means for mounting said base on a vehicle with said base horizontal when said vehicle is horizontal and also aligned relative to the direction of travel of said vehicle, a shaft, means pivotally mounting said shaft parallel to said base and transverse to said direction of travel, a beam fixed on one end of said shaft and oscillating about the axis of said shaft in a plane parallel to said direction of travel, a pen on said beam, a weight fixed below said shaft tending to keep said beam parallel to said base, chart drive means on said base including means for guiding a chart past said pen in a direction parallel to said base and to said direction of travel, drive means adapted for connection to a wheel of said vehicle for driving said chart drive means proportional to the distance traversed by said vehicle, a drum mounted on said base and surrounding a portion of said shaft and said weight, said drum enclosing fluid, and vanes in said drum rotatable with said shaft.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1 which further comprises damping means damping oscillation of said beam.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 1 which further comprises a receptacle collecting fluid leakage from said drum around said shaft, a tank for fluid communicating with said drum to maintain said drum full of fluid, and a pump to return fluid from said receptacle to said tank.
Claim 5
Dependent Claim
21 words
Apparatus according to claim 1 in which said vanes extend radially relative to said shaft from the periphery of said weight.
Claim 6
Dependent Claim
38 words
Apparatus according to claim 1 in which said beam is apertured in a plurality of holes and said pen selectively fits in any of said holes, whereby the distance of said pen from said shaft may be varied.
Claim 7
Dependent Claim
47 words
Apparatus according to claim 1 which further comprises a subframe parallel to said base, said chart drive means being mounted on said subframe and means to adjust the distance of said subframe from said base to center of said pen relative to the center of said chart.
Claim 8
Dependent Claim
69 words
Apparatus according to claim 1 in which said chart drive comprises a platen mounted perpendicular to said base and parallel to said direction, a chart paper roll, guide means to guide paper from said chart paper roll along said platen to be contacted by said pen, a paper drive roll, said drive means turning said paper drive roll to draw paper past platen proportional to movement of said vehicle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |