Patent US4222520A successfully refreshed from Google Patents.
Patent US4335521A successfully refreshed from Google Patents.
US4335521A
Expired / Lapsed
US
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Method and apparatus for geographic location
Assignee: Individual
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Filing: 1980-06-26
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Granted: 1982-06-22
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Expires: 2000-06-26
Abstract
Abstract This invention is directed to a method of determining and recording an indeterminate sequence of distance/direction coordinates in a manner that permits the user or some other person to subsequently retrace the coordinates. Apparatus is disclosed to enable the user to record and retrace the coordinates with a high degree of precision.
Inventors
- 👤 Terry G. Rutherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:42
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/04; G01C17/10; G01C21/00; G01C21/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A geographic travel aid device, comprising a single piece molded base, top cover and bottom cover, of synthetic polymeric material, said top cover and bottom cover being attached to said base by separate flexible sections of said polymeric material, said base having latch means for selectively holding said top cover and bottom cover in place; compass means attached to said base and visible through said top cover, said top cover having at lease two concentric rows of apertures, the apertures of adjacent rows being radially aligned relative to said compass means.
Claim 2
Dependent Claim
91 words
A geographic travel aid device, comprising a single piece molded base, top cover and bottom cover, of synthetic polymeric material, said top cover and bottom cover being attached to said base by separate flexible sections of said polymeric material, said base having latch means for selectively holding said top cover and bottom cover in place; compass means attached to said base and visible through said top cover, said top cover having at lease two concentric rows of apertures, the apertures of adjacent rows being radially aligned relative to said compass means.
Claim 3
Independent Claim
220 words
A method of traveling from one geographic location and returning to said location, utilizing a compass attached to a base having at least two concentric rings defined around said compass, said compass being incrementally rotatable 180° relative to said base, comprising the steps of aligning said base and compass with a selected reference direction and sighting relative to said base a first travel direction, marking a first concentric circle radially outward from the compass along the first travel direction with a first distance code, traveling a distance relative to said first code, realigning said base and compass relative to said selected reference direction and sighting relative to said base a second travel direction, marking a second concentric circle radially outward from the compass the second travel direction with a second travel code, traveling a distance relative to said second travel code, rotating said base relative to 180° said compass, aligning said base and compass relative to said selected reference direction, sighting radially outward from said compass in the direction of said second travel code and traveling a distance relative to said second travel code, realigning said base and compass relative to said selected reference direction, and sighting radially outward from said compass in the direction of said first travel code and traveling a distance relative to said first travel code.
Claim 4
Independent Claim
220 words
A method of traveling from one geographic location and returning to said location, utilizing a compass attached to a base having at least two concentric rings defined around said compass, said compass being incrementally rotatable 180° relative to said base, comprising the steps of aligning said base and compass with a selected reference direction and sighting relative to said base a first travel direction, marking a first concentric circle radially outward from the compass along the first travel direction with a first distance code, traveling a distance relative to said first code, realigning said base and compass relative to said selected reference direction and sighting relative to said base a second travel direction, marking a second concentric circle radially outward from the compass the second travel direction with a second travel code, traveling a distance relative to said second travel code, rotating said base relative to 180° said compass, aligning said base and compass relative to said selected reference direction, sighting radially outward from said compass in the direction of said second travel code and traveling a distance relative to said second travel code, realigning said base and compass relative to said selected reference direction, and sighting radially outward from said compass in the direction of said first travel code and traveling a distance relative to said first travel code.
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |