US3871108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional device
Assignee: Individual
•
Filing: 1973-03-05
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Granted: 1975-03-18
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Expires: 1993-03-05
Abstract
Abstract A directional device for overland travel to aid in returning to intersect a roadway, in which a pair of concentric rotatable dials and a freely rotatable compass needle are mounted on a frame. One dial carries a first reference indicium while the other dial is divided into a pair of individually identifiable semicircular arcs having a reference divider at one junction of the arcs. The dials are releasably fixable one with respect to the other and the one dial is releasably fixable with respect to the frame whereby the indicia are registrable with an indexing point on the frame.
Inventors
- 👤 Henri Beaudout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:01
CPC Classifications
G; G01; G01C; G01C17/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
208 words
A directional device for use in overland travel, comprising: a frame: a pair of concentric planar circular dials each mounted on said frame for rotation relative to said frame and to eAch other about their common axis; one of said dials having at least one first reference indicium; the other of said dials being divided about its circumference into two individually distinguishable semi-circular arcs with a second reference indicium marking at least one of the two junctions between said arcs; means for releasably clamping the pair of dials together for mutual rotation about their common axis relative to the frame; means for releasably securing said one dial on the frame against rotation relative thereto; index means on the frame with which the first reference indicium on said one dial may be registered on rotation of said one dial; a magnetic compass needle mounted for free pivotal movement about said common axis relative to the other dial being registrable with the needle on rotation with respect to said other dial of said other dial; and memory indicator means having further index means thereon, said indicator means being mounted on said frame adjacent said other dial and rotatable concentrically therewith, and means to inhibit the indicator means against free rotation.
Claim 2
Dependent Claim
208 words
A directional device for use in overland travel, comprising: a frame: a pair of concentric planar circular dials each mounted on said frame for rotation relative to said frame and to eAch other about their common axis; one of said dials having at least one first reference indicium; the other of said dials being divided about its circumference into two individually distinguishable semi-circular arcs with a second reference indicium marking at least one of the two junctions between said arcs; means for releasably clamping the pair of dials together for mutual rotation about their common axis relative to the frame; means for releasably securing said one dial on the frame against rotation relative thereto; index means on the frame with which the first reference indicium on said one dial may be registered on rotation of said one dial; a magnetic compass needle mounted for free pivotal movement about said common axis relative to the other dial being registrable with the needle on rotation with respect to said other dial of said other dial; and memory indicator means having further index means thereon, said indicator means being mounted on said frame adjacent said other dial and rotatable concentrically therewith, and means to inhibit the indicator means against free rotation.
Claim 3
Dependent Claim
27 words
A device as claimed in claim 1 in which said one dial is graduated equally about its circumference to identify eight different reference indicia spaced apart 45*.
Claim 4
Dependent Claim
28 words
A device as claimed in claim 1 in which said one dial is a disk dial and said other dial is a dial ring circumscribing said one dial.
Claim 5
Dependent Claim
22 words
A device as claimed in claim 3 including means engagable with the frame for attachment of the frame to a person''s body.
Claim 6
Dependent Claim
21 words
A device as claimed in claim 4 in which the means engaging the frame comprises a belt threaded through the frame.
Claim 7
Dependent Claim
71 words
A device as claimed in claim 3 wherein said memory indicator means, comprises a ring mounted on said frame concentrically with said dials, an upstanding leg carried by said ring, said leg being located adjacent with said other dial and having further index means thereon, said ring being manually adjustable to move said leg concentrically in relation to said other dial, and braking means to inhibit the movement of said ring.
Claim 8
Dependent Claim
57 words
A device as claimed in claim 3 including means to carry said dials, said carrying means being mounted on the frame and releasably secured thereon for rotation about said common axis, the magnetic compass needle being mounted for free pivotal movement on the carrying means, said one dial being fixed against rotation relative to the carrying means.
Claim 9
Dependent Claim
35 words
A device as claimed in claim 7 in which the carrying means comprises a bowl rotatable about its vertical axis relative to the frame, the dials being nested in the bowl and mounted co-axially thereon.
Claim 10
Dependent Claim
21 words
A device as claimed in claim 8 in which said one dial has a pair of diametrically opposed first reference indicia.
Claim 11
Dependent Claim
22 words
A device as claimed in claim 1 including means mounted for pivotal movement relative to the frame for indicating lateral directional orientation.
Claim 12
Dependent Claim
88 words
A device as claimed in claim 10 in which the directional means comprises an arrow pivotable tp point in either of two opposed lateral directions with respect to the frame and to present either of two individually distinguishable colours, the arcs on said other dial being also individually distinguishable by said two colours, the arrow when presenting one of said colours pointing in a direction away from that said colour on said other dial when the second indicium on said other dial is registered with said index means.
Claim 13
Dependent Claim
32 words
A device as claimed in claim 1 in which the two semi-circular arcs are each divided uniformly into a plurality of graduating indicia, the arcs being mirror images one with the other.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |