GB2284700A - Map marker and navigational aid - Google Patents

Map marker and navigational aid Download PDF

Info

Publication number
GB2284700A
GB2284700A GB9424675A GB9424675A GB2284700A GB 2284700 A GB2284700 A GB 2284700A GB 9424675 A GB9424675 A GB 9424675A GB 9424675 A GB9424675 A GB 9424675A GB 2284700 A GB2284700 A GB 2284700A
Authority
GB
United Kingdom
Prior art keywords
map
apex
arc
marker
sector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9424675A
Other versions
GB9424675D0 (en
GB2284700B (en
Inventor
Rod Ward
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB939325382A external-priority patent/GB9325382D0/en
Application filed by Individual filed Critical Individual
Priority to GB9424675A priority Critical patent/GB2284700B/en
Publication of GB9424675D0 publication Critical patent/GB9424675D0/en
Publication of GB2284700A publication Critical patent/GB2284700A/en
Application granted granted Critical
Publication of GB2284700B publication Critical patent/GB2284700B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/0005—Hand manipulated computing devices characterised by a specific application
    • G06G1/0052—Hand manipulated computing devices characterised by a specific application for air navigation or sea navigation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/10—Map spot or coordinate position indicators; Map reading aids

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Ocean & Marine Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Instructional Devices (AREA)

Abstract

The map/chart marker and navigational aid comprises a transparent sector consisting of two radii 3, 4 and an arc edge 2, the two radii meeting at a point or apex 8, the sector having at least one arcuate slot 5 arc-centred on the point or apex. The sector is optionally provided with a centre line 1, degree of arc scale, distance markings, several arcuate slots with further (optional) degree of arc markings and turning point photographic zone markings and slot. <IMAGE>

Description

MAP MARKER.
This invention relates to a map/chart marker and navigational aid which can be used in gliding or power flying.
In marking maps/charts, notably aeronautical charts, it is customary and most useful to mark distances from or to a position, destination or turn point, either by regularly spaced marks on a trackline from or to a position, turn point or destination, or by arcs/circles drawn with the centre on the position, destination or turn point, in order to estimate easily the distance to go or gone. In addition, it is essential to know how far off track in degrees of arc is the present position. More specificially, in gliding it is necessary to mark turn points and photographic zones associated with turn points accurately. This invention combines and enables all these tasks to be performed simply and easily. Furthermore, in- flight analysis is possible through the invention's portability.
According to the invention there is provided a map/chart and navigational aid comprising a transparent sector consisting of two radii and an arc edge, the two radii meeting at a point or apex, the sector having at least one arcuate slot arc-centred on the point or apex.
Preferably the map/chart marker has a centre line marked from the apex to the arc edge, the centre line optionally having regularly spaced distance markings marked thereon, the distance markings starting at the apex.
The map/chart marker may also have units of arc marked on the arc edge, which units radiate outwards from the centre line. In addition, distance scales may be marked on the radii, the scales starting at the apex. Preferably the sector has several arcuate slots positioned at intervals from and arc-centred on the apex. Units of arc may be marked below each arcuate slot. The slot nearest the apex may mark a turn point zone in an appropriate scale.
The map/chart marker is preferably made in PVC for strength and durability, but other clear plastics may be used.
The invention will now be described with reference to the accompanying drawings in which: Figure 1 is a plan view of one embodiment of the invention in which the sector is a quadrant.
Figure 2 is a plan view of a second embodiment of the invention in which the angle at the apex of the sector is less than 90".
The map/chart marker 9 shown in Figure 1 is a quadrant which has a centre line 1 marked with distance markings out from the point or apex 8, an arc edge 2 marked in degrees of arc radiating out from the centre line 1 and straight edges 3 and 4 marked in suitable scale distances appropriate to the map/chart in use. Six arcuate slots 5 are cut out of the quadrant 9; the slots mark suitable scale distances from the apex 8 and are arc-centred on the apex 8 with the inner edge marking the distance. Degree of arc markings are optionally provided below the slots, the nearest slot to the apex 8 marking a turn point zone in an appropriate scale. Two marker holes 6 are drilled in the centre line 1.
In Figure 1 the invention is shown with scales appropriate to 1:500 000 and 1:250 000, although other scales could be used as required.
The invention is, in most cases, used with point 8 on the position, destination or turn point.
Distances may be marked or measured using the slots 5 and arc edge 2, or more accurately using the scales on the straight edges 3 and 4.
Degrees of track may be measured using the degree of arc scales on the slots 5 and arc edge 2, and the centre line 1. Distances and degrees of arc may be measured simultaneously.
A turning point photographic zone is the area 45" either side of the bisector of track-in and track-out and on the opposite side to track-in and track-out. Thus turning point photographic zones are marked along a line midway between track-in and track-out, and on the opposite side to track-in and track-out, using the centre line 1 and appropriate slot or zone markings 7. Holes 6 help to mark the bisector.
The map/chart marker of the invention may be a quadrant, as shown in Figure 1. Alternatively, the angle at the apex 8 can be less than 90", or more than 90 depending on the type and speed of aircraft being flown. Thus, for example, Figure 2 shows an alternative embodiment of the map/chart marker 9 in which the angle at the apex 8 is 60".
Such a map/chart marker can be used in faster aircraft, such as military jets, or in situations where a pilot wishes to travel longer distances, and therefore needs to measure longer distances. The map/chart marker 9 in Figure has seven arcuate slots 5.

Claims (9)

CLAIMS.
1. A map/chart marker and navigational aid comprising a transparent sector consisting of two radii and an arc edge, the two radii meeting at a point or apex, the sector having at least one arcuate slot arc-centred on the point or apex.
2. The map/chart marker as claimed in claim 1 having a centre line marked from the apex to the arc edge, said centre line having regularly spaced distance markings marked thereon, said markings starting at the apex.
3. The map/chart marker as claimed in claim 2 having units of arc marked on the arc edge, which units radiate outwards from the centre line.
4. The map/chart marker as claimed in any one of claims 1 to 3 wherein distance scales are marked on the radii, said scales starting at the apex.
5. The map/chart marker as claimed in any one of the preceding claims wherein the sector has three or more arcuate slots positioned at intervals from and arc-centred on the apex.
6. The map/chart marker as claimed in claim 5 wherein units of arc are marked below each arcuate slot.
7. The map/chart marker as claimed in claim 5 or claim 6 wherein the slot nearest the apex marks a turn point zone in an appropriate scale.
8. The map/chart marker as claimed in any one of the preceding claims wherein the sector is a quadrant.
9. The map/chart marker and navigational aid substantially as hereinbefore described with reference to any one of the enclosed drawings.
GB9424675A 1993-12-09 1994-12-07 Rodz mapmarker and navigation aid Expired - Fee Related GB2284700B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9424675A GB2284700B (en) 1993-12-09 1994-12-07 Rodz mapmarker and navigation aid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939325382A GB9325382D0 (en) 1993-12-09 1993-12-09 "rodz" map marker
GB9424675A GB2284700B (en) 1993-12-09 1994-12-07 Rodz mapmarker and navigation aid

Publications (3)

Publication Number Publication Date
GB9424675D0 GB9424675D0 (en) 1995-02-01
GB2284700A true GB2284700A (en) 1995-06-14
GB2284700B GB2284700B (en) 1997-08-06

Family

ID=26304009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9424675A Expired - Fee Related GB2284700B (en) 1993-12-09 1994-12-07 Rodz mapmarker and navigation aid

Country Status (1)

Country Link
GB (1) GB2284700B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB665159A (en) * 1949-04-04 1952-01-16 Kelvin & Hughes Ltd Improvements in or relating to navigational devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB665159A (en) * 1949-04-04 1952-01-16 Kelvin & Hughes Ltd Improvements in or relating to navigational devices

Also Published As

Publication number Publication date
GB9424675D0 (en) 1995-02-01
GB2284700B (en) 1997-08-06

Similar Documents

Publication Publication Date Title
US2004951A (en) Navigational instrument
US4866852A (en) Aeronautic chart removably attachable course and position locator
US6134796A (en) Aircraft navigational plotter
US2502721A (en) Instrument landing indicator
US3690009A (en) Position locator
US5404648A (en) Navigational plotter
US2438730A (en) Computing device
CA1071167A (en) Navigational aid
GB2284700A (en) Map marker and navigational aid
US4274204A (en) Aircraft traffic pattern computer
US3724079A (en) Navigational chart display device
US2019708A (en) Course calculating instrument
US2339222A (en) Flight calculator
US4446624A (en) Single handed set-up apparatus
US2210773A (en) Course and bearing indicator
US3281942A (en) Navigational course finder
US4879812A (en) Aerial map navigational aid
US3262640A (en) Variable course approach computer
US3131858A (en) Computer
US3643333A (en) Navigational course computer and plotter
US4208805A (en) Navigational calculating device
US2736096A (en) Radio plotter
EP0274917A2 (en) Multi-function navigation instrument
US3315887A (en) Navigation aid
US3957199A (en) Navigational aids

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981207