GB2220770B - Vmg comparitor - Google Patents

Vmg comparitor

Info

Publication number: GB2220770B
Authority: GB; United Kingdom
Prior art keywords: comparitor; vmg; vmg comparitor
Prior art date: 1988-07-11
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.): Expired - Lifetime

Application number

GB8816428A

Other versions

GB8816428D0 (en

GB2220770A (en

Inventor

John Christopher Hirst

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.)

1988-07-11

Filing date

1988-07-11

Publication date

1992-09-09

1988-07-11 Application filed by Individual filed Critical Individual

1988-07-11 Priority to GB8816428A priority Critical patent/GB2220770B/en

1988-08-17 Publication of GB8816428D0 publication Critical patent/GB8816428D0/en

1990-01-17 Publication of GB2220770A publication Critical patent/GB2220770A/en

1992-09-09 Application granted granted Critical

1992-09-09 Publication of GB2220770B publication Critical patent/GB2220770B/en

2008-07-11 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06—COMPUTING OR CALCULATING; COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
- G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
- G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
- G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

Engineering & Computer Science (AREA)
Theoretical Computer Science (AREA)
Physics & Mathematics (AREA)
Computer Hardware Design (AREA)
General Physics & Mathematics (AREA)
Mathematical Physics (AREA)
Ocean & Marine Engineering (AREA)
Radar, Positioning & Navigation (AREA)
Remote Sensing (AREA)
Toys (AREA)

GB8816428A 1988-07-11 1988-07-11 Vmg comparitor Expired - Lifetime GB2220770B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB8816428A GB2220770B (en)	1988-07-11	1988-07-11	Vmg comparitor

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8816428A GB2220770B (en)	1988-07-11	1988-07-11	Vmg comparitor

Publications (3)

Publication Number	Publication Date
GB8816428D0 GB8816428D0 (en)	1988-08-17
GB2220770A GB2220770A (en)	1990-01-17
GB2220770B true GB2220770B (en)	1992-09-09

Family

ID=10640227

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8816428A Expired - Lifetime GB2220770B (en)	1988-07-11	1988-07-11	Vmg comparitor

Country Status (1)

Country	Link
GB (1)	GB2220770B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB9930149D0 (en) *	1999-12-22	2000-02-09	Widders Peter	Tidal wheel
AU2007236513B2 (en) *	2006-04-12	2014-04-17	Craig Summers	Navigational planning and display method for the sailor's dilemma when heading upwind
FR2960636A1 (en) *	2010-05-31	2011-12-02	Christian Manon	Device for allowing materialization of close-hauled edges on map in e.g. navigation sailboat, has circular plate superimposed and fixed to square support at center of circular plate and freely rotated on square support at center
FR3031079A1 (en) *	2014-12-29	2016-07-01	Christian Jean Felix Antoine Lafon	DEVICE FOR DISPLAYING AND DETERMINING THE VALUE OF THE REAL WIND OF A BOAT AND DIRECTING IT FROM THE NORTH AND DETERMINING THE BEST WINNING SPEED FROM THE WIND FROM NEARBY TO LARGUE LOOP WITH STAR OR STAR LOOK PORT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB708811A (en) *	1950-10-30	1954-05-12	Oscar Eugene Batori	Navigational computer of the slide rule type
GB708893A (en) *	1950-10-30	1954-05-12	Oscar Eugene Batori	Improvements in or relating to computers of the slide rule type
US4329570A (en) *	1979-02-12	1982-05-11	Leadrite Corporation	Lead calculator
US4652728A (en) *	1984-08-06	1987-03-24	Patrick Galiana	Wind and course calculator for navigation

1988
- 1988-07-11 GB GB8816428A patent/GB2220770B/en not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB708811A (en) *	1950-10-30	1954-05-12	Oscar Eugene Batori	Navigational computer of the slide rule type
GB708893A (en) *	1950-10-30	1954-05-12	Oscar Eugene Batori	Improvements in or relating to computers of the slide rule type
US4329570A (en) *	1979-02-12	1982-05-11	Leadrite Corporation	Lead calculator
US4652728A (en) *	1984-08-06	1987-03-24	Patrick Galiana	Wind and course calculator for navigation

Also Published As

Publication number	Publication date
GB8816428D0 (en)	1988-08-17
GB2220770A (en)	1990-01-17

Publication	Publication Date	Title
AU105058S (en)	1989-09-14	Sunlounger
BG47752A1 (en)	1990-09-14	Reductor- evaporator
GB2220770B (en)	1992-09-09	Vmg comparitor
BG49585A1 (en)	1991-12-16	Anemorumbometer
GB8916064D0 (en)	1989-08-31	Platform
GB8801535D0 (en)	1988-02-24	Panti-hose construction
GB8816807D0 (en)	1988-08-17	Platform
PL272262A1 (en)	1989-11-13	The rest-armchair
GB8903548D0 (en)	1989-04-05	Tamper-or damage-indicating members
GB8825939D0 (en)	1988-12-14	Work platform
IE880999L (en)	1988-11-02	Nitrification-inhibiting agent
PL276446A2 (en)	1989-09-18	Antiprespiration agent
GB8807947D0 (en)	1988-05-05	Superbowl
BG47659A1 (en)	1990-09-14	Cytokininic means
AU101848S (en)	1988-11-03	Section
AU104629S (en)	1989-08-16	Section
AU105999S (en)	1989-11-22	Section
AU106000S (en)	1989-11-22	Section
AU106020S (en)	1989-11-23	Section
AU106825S (en)	1990-02-14	Section
AU108812S (en)	1990-08-30	Section
AU108818S (en)	1990-08-30	Section
GB8829502D0 (en)	1989-02-01	Henry conver-table
GB8800336D0 (en)	1988-02-10	Gun-gabnet construction
BG45953A1 (en)	1989-09-15	Holding section

Legal Events

Date	Code	Title	Description
1996-03-06	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19950711