GB2511077A - High beam and low beam combination lamp for a bicycle - Google Patents

High beam and low beam combination lamp for a bicycle Download PDF

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Publication number
GB2511077A
GB2511077A GB1303151.3A GB201303151A GB2511077A GB 2511077 A GB2511077 A GB 2511077A GB 201303151 A GB201303151 A GB 201303151A GB 2511077 A GB2511077 A GB 2511077A
Authority
GB
United Kingdom
Prior art keywords
light source
receiving space
lens
combination lamp
low beam
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
GB1303151.3A
Other versions
GB2511077B (en
GB201303151D0 (en
Inventor
Wen-Sung Lee
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
Application filed by Individual filed Critical Individual
Priority to GB1303151.3A priority Critical patent/GB2511077B/en
Publication of GB201303151D0 publication Critical patent/GB201303151D0/en
Publication of GB2511077A publication Critical patent/GB2511077A/en
Application granted granted Critical
Publication of GB2511077B publication Critical patent/GB2511077B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
    • B62J6/02—Headlights
    • B62J6/028—Headlights specially adapted for rider-propelled cycles with or without additional source of power
    • B62J6/029—Headlights specially adapted for rider-propelled cycles with or without additional source of power characterised by the structure, e.g. casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A high beam and low beam combination lamp for a bicycle includes a main body 1, a lens 2, a downward light source 3 and a straight light source 4, the main body 1 having a receiving space 11 defined thereon, the receiving space 11 having a first surface 12 and a second surface 13 formed therein, the lens 2 being assembled in the receiving space 11 and corresponding to the second surface 13, the downward light source 3 being assembled with the first surface 12, parts of the light beam of the downward light source 3 obliquely passing through the receiving space 11 so as to form a low beam lighting region, the straight light source 4 being assembled with the second surface 13, the light beam of the straight light source 4 passing through the lens 2 so as to form a high beam lighting region. The lens 2 may be a plane lens, a Fresnel lens, or a TIR lens. The downward light source may be directed at a reflecting plane (5, figure 14).

Description

HIGH BEAM AND LOW BEAM COMBINATION LAMP FOR A
BICYCLE
1. Field of the Invention
The present invention relates to a lamp for a bicycle, and more particularly to a high beam and low beam combination lamp for a bicycle.
2. Description of Related Art
A bicycle lamp, in particular, being assembled at a front part of a bicycle, is a necessary apparatus for a bicycle when riding the bicycle in the night and gives the rider more safety and also protects passerby's safety. A conventional bicycle lamp can provide a high beam or a low beam selectively. The high beam could be transmitted ahead to warn the passerby; while the low beam conld light on the road surface at the front of the bicycle. Therefore, a high-low beam function for the bicycle lamp is important.
A conventional high-low beam combination lamp for a bicycle comprises a light, a reflector and a lens. For performing the high-low beam frmnction for the conventional high-low beam combination lamp for a bicycle, a user adjusts a distance between the light and the reflector or another distance between the light and the lens, so that the conventional high-low beam combination lamp for a bicycle lights on the road at near field or the road at far field optionally.
However, the conventional high-low beam combination lamp for a bicycle has two disadvantages as following: Firstly, the strncture of the conventional high-low beam combination lamp for a bicycle is complicated and damageable under long-termri repeating operation; secondly, when riding the bicycle on a rough road, the distance between the light and the reflector or another distance between the light and the lens shitis easily because of a violent vibration, so that the conventional high-low beam combination lamp for a bicycle fails to provide a suitable lighting condition; as a result, the conventional high-low beam combination lamp for a bicycle is inconvenient to be used.
The main objective of the present invention is to provide a high beam and low beam combination lamp for a bicycle.
To achieve the objective, a high beam and low beam combination lamp for a bicycle comprises a main body, a lens, a downward light source and a straight light source, the main body having a receiving space defined at one end thereof; the receiving space having a first surface and a second surfice formed therein, the lens being assembled in the receiving space and corresponding to the second surface, the downward light source being assembled with the first surfice of the receiving space, parts of the light beam of the downward light source obliquely passing through the receiving space so as to form a low beam lighting region, the straight light source being assembled with the second surfice, the light beam of the straight light source passing through the lens so as to form a high beam lighting region. Wherein, the lens is optionally selected as a plano-convex lens, a double convex lens or a Fresnel lens; the lens is a TIR lens; the receiving space has a reflecting plane assembled therein; the reflecting plane corresponds to the downward light source; other parts of the light beam of the downward light source are reflected by the reflecting plane and pass through the receiving space so as to form a low beam lighting region; the TIR lens further has a fiat plane formed thereon; the receiving space has a third surface defined therein; the fiat plane is assembled with the third suruice; the angle between the first surfhce and the second surface is 270 degrees; the angle between the second surface and the third surface is 90 degrees; the downward light source and the straight light source are light-emitting diodes; au angle is defined between the first surface and the second surface; the angle defined between the first surface and the second surface is optionally selected as 90 degrees or 270 degrees.
In the drawings: Fig. 1 is a perspective view of a high beam and low beam combination lamp for a bicycle of the present invention; Fig. 2 is an embodied view of the high beam and low beam combination lamp for a bicycle for showing a low beam condition; Fig. 3 is an embodied view of the high beam and low beam combination lamp for a bicycle for showing a high beam condition; Fig. 4 is a perspective view of one embodiment of the present invention in which the lens is a double convex lens; Fig. 5 is an embodied view of one embodiment of the present invention for showing a low beam condition; Fig. 6 is an embodied view of one embodiment of the present invention for showing a high beam condition; Fig. 7 is a perspective view of another embodiment of the present invention in which the lens is a Fresnel lens; Fig. 8 is an embodied view of another embodiment of the present invention for showing a low beam condition; Fig. 9 is an embodied view of another embodiment of tile present invention for showing a high beam condition; Fig. 10 is a perspective view of a further embodiment of the present invention in which the lens is a TTR lens; Fig. 11 is an embodied view of the further embodiment of the present invention for showing a low beam condition; and Fig. 12 is an embodied view of the fttrther embodiment of the present invention for showing a high beam condition.
Referring to Figs. 1-3, a high beam and low beam combination lamp for a bicycle in accordance with the present invention comprises a main body 1, a lens 2, a downward light source 3 and a straight light source 4. The main body 1 has a receiving space 11 defined at one end thereof The receiving space 11 has a first surface 12 and a second surface 13 formed therein. The lens 2 is assembled in the receiving space ii and corresponding to the second surface 13. Tn a preferred embodiment, the lens 2 is a pIano-convex lens. The downward light source 3 is assembled with the first surface 12 of the receiving space 11. Parts of the light beam of the downward light source 3 obliquely pass through the receiving space 11 so as to form a low beam lighting region. The straight light source 4 is assembled with the second surface 13. The light beam of the straight light source 4 passes through the lens 2 so as to form a high beam lighting region. The downward light source 3 and the straight light source 4 are light-emitting diodes (LED5).
As shown by the dashed lines and the arrows in Fig. 2, when a low beam condition of the present invention is provided, parts of the light beam of the downward light source 3 obliquely pass through the receiving space 11; while as shown in Fig. 3, when a high beam condition of the present invention is provided, not only parts of the light beam of the downward light source 3 obliquely pass though the receiving space 11, but also the light beam of the straight light source 4 passes through the lens 2. Therefore, a rider operates the present invention in a low beam condition or in a high beam condition selectively according to the practical road conditions.
Referring to Fig. 3, when the high beam condition of the present invention is provided, the downward light source 3 still projects the low beam lighting region; in other words, the low beam lighting region does not disappear when the present invention is in the high beam condition, so that the rider checks the road conditions in time so as to prevent from a bike accident occurring.
Other embodiments of the present invention are briefed and listed as following, only the differences different form the embodiment mentioned above are elucidated.
1. As shown in Figs. 4-6, one embodiment of the present invention, the lens 2 is a double convex lens 21.
2. As shown in Figs. 7-9, another embodiment of the present invention, the lens 2 is a Fresnel lens 22.
3. As shown in Fig. 2, Fig. 5 and Fig. 8, an angle is defined between the first surface 12 and the second surface 13.
4. The downward light source 3 is perpendicular to the straight light source 4.
As shown Figs. 10-12, a further embodiment of the present invention comprises a main body 10 having a receiving space 110 defined therein, a TIR lens (total internal reflection lens) 23, a downward light source 30 and a straight light source 40. The receiving space 110 has a reflecting plane 5 assembled therein. The reflecting plane 5 corresponds to the downward light source 30.
Parts of light beam of the downward light source 30 obliquely pass though the receiving space ItO, and rests of the light beam of the downward light source 30 are reflected by the reflecting plane 5 and pass through the receiving space 110 so as to form a low beam lighting region, as shown by the dashed lines and arrows in Fig. 11. As shown in Fig. 12, a plurality of the straight light source 40 passes through the TIR lens 23.
Referring to Figs. 13-15, the TIR lens 23 further has a flat plane 231 formed at a lateral side thereof. The receiving space 110 has a third surface 140 defined therein. The flat plane 231 is assembled with the third surface 140. As compared with the TIR lens 23 shown in Fig. 11, a volume of an upper portion of the TIR lens 23 configured with the flat plane 23 1 is reduced so that the size of the main body 10 is reducible. Tn this embodiment, the angle between tile first surface 120 and the second surface 130 is 270 degrees, and the angle between the second surface 130 and the third surface 140 is 90 degrees.
The lens 2 described in the present invention is targeted for an element in which a light beam passes through and projects forward. The types and the appearances of the lens 2 are not limited by the present invention.
The advantages of the present invention are described as following.
Firstly, the structure of the present invention is simple and sustainable under long-term operations.
Secondly, because the user does not need to adjust the distance between the light and the reflector or another distance between the light and the lens as described in prior arts, the present invention provides a suitable lighting condition according to the practical road conditions, so that the user operates the present invention easily.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

Claims (8)

  1. SClaim(s) 1. A high beam and low beam combination lamp for a bicycle comprising a main body (1), a lens (2), a downward light source (3) and a straight light source (4); die main body (1) having a receiving space (11) defined at one end thereof, die receiving space (1!) having a first surface (12) and a second surface (13) formed therein; the lens (2) being assembled in the receiving space (11) and corresponding to the second surface (13); the downward light source (3) being assembled with the first surface (12) of the receiving space (11), parts of the light beam of the downward light source (3) obliquely passing through the receiving space (ii) so as to form a low beam lighting region; and the straight light source (4) being assembled with the second surface (13), the light beam of the straight light source (4) passing through the lens (2) so as to form a high beam lighting region.
  2. 2. The high beam and low beam combination lamp for a bicycle as claimed in claim I. wherein the lens (2) is a plano-convex lens, a double convex lens (21) or a Fresnel lens (22).
  3. 3. The high beam and low beam combination lamp for a bicycle as claimed in claim 1, wherein the lens (2) is a TIR lens (23); the receiving space (I 10) has a reflecting plane (5) assembled therein; the reflecting plane (5) corresponds to the downward light source (30); other parts of the light beam of the downward light source (30) are reflected by the reflecting plane 5 and pass through the receiving space (110) so as to form a low beam lighting region.
  4. 4. The high beam and low beam combination lamp for a bicycle as claimed in claim 3, wherein the hR lens (23) further has a flat plane (231) formed thereon; the receiving space (110) has a third surface (140) defined therein; the flat plane (231) is assembled with the third surface (140).
  5. 5. The high beam and low beam combination lamp for a bicycle as claimed in claim 4, wherein the angle between the first surface (120) and the second surface (130) is 270 degrees; and the angle between the second surface (130) and the third surface (140) is 90 degrees.
  6. 6. The high beam and low beam combination lamp for a bicycle as claimed in claim I, wherein tile downward light source (3) and the straight light source (4) are light-emitting diodes.
  7. 7. The high beam and low beam combination lamp for a bicycle as claimed in claim 1, wherein an angle is defined between the first surface (12) and the second surface (13) and is either 90 degrees or 270 degrees.
  8. 8. A combination lamp for a bicycle substantially as hereinbefore described with reference to and as shown in the accompanying drawings.Amendments to the claims have been made as follows: Claim(s) 1. A high beam and low beam combination lamp for a bicycle comprising: a main body (10) having a receiving space (110) defined therein, the receiving space (110) defming a fir st surface (120) facing downward and a second surface (130) facing forward to an opening of the receiving space (11), the first surface (120) connected with the second surface (130) and defining an angle therebetween; a downward light source (30) assembled with the first surface (120) of the receiving space (110); a straight light source (40) assembled with the second surface (130) of the receiving space (110); a TIR lens (23) disposed in the receiving space (110) and corresponding to the straight light source (40) so that a light beam of the straight light source S...r:15 (40) passes through the TIR lens (23) to form a high beam lighting region; and a reflector (5) disposed in the receiving space (110) and including a reflecting surface having a substantially parabolic cylinder shape corresponding to the downward light source (30) so that a light beam of the downward light source (30) is reflected by the reflector (5) to form a low beam lighting region; wherein the high beam and low beam combination lamp is configured to be operable to a low beam condition where the downward light source (30) is lighted, and a high beam condition where both the straight light source (40) and the downward light source (30) are lighted.2. The high beam and low beam combination lamp as claimed in claim 1, wherein the TIR lens (23) further has a flat plane (231) formed thereon; the receiving space (110) has a third surface (140) defined therein; the flat plaiie (231) is assembled with the third surface (140).3. The high beam and low beam combination lamp as claimed in claim 2, wherein the angle between the first surface (120) and the second surface (130) is 270 degrees; and an angle between the second surface (130) and the third surface (140) is 90 degrees.4. The high beam and low beam combination lamp as claimed in claim 1, wherein the downward light source (30) and the straight light source (40) are light-emitting diodes.5. A high beam and low beam combination lamp for a bicycle substantially as hereinbefore described with reference to and as shown in the accompanying drawings. e.. sS..... * * * .. * . * S. * S * *
GB1303151.3A 2013-02-22 2013-02-22 High beam and low beam combination lamp for a bicycle Expired - Fee Related GB2511077B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1303151.3A GB2511077B (en) 2013-02-22 2013-02-22 High beam and low beam combination lamp for a bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1303151.3A GB2511077B (en) 2013-02-22 2013-02-22 High beam and low beam combination lamp for a bicycle

Publications (3)

Publication Number Publication Date
GB201303151D0 GB201303151D0 (en) 2013-04-10
GB2511077A true GB2511077A (en) 2014-08-27
GB2511077B GB2511077B (en) 2015-06-24

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Family Applications (1)

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GB1303151.3A Expired - Fee Related GB2511077B (en) 2013-02-22 2013-02-22 High beam and low beam combination lamp for a bicycle

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3253621A4 (en) * 2015-02-04 2018-10-24 Slaughter, Christopher Dynamic cycle light distribution system
AU2016208982B2 (en) * 2015-01-22 2020-03-19 Design Brains Pty Ltd Bicycle light

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040141316A1 (en) * 2002-11-22 2004-07-22 Harald Twardawski Mobile lamp
US20070183164A1 (en) * 2006-02-08 2007-08-09 Koito Manufacturing Co., Ltd. Vehicle headlamp
FR2920516A1 (en) * 2007-09-05 2009-03-06 Koito Mfg Co Ltd Headlight for vehicle, has LED arranged on substrate of light source module, and driving unit rotating heat sink in horizontal direction, where light emitting surface of LED is displaced on focusing surface of lens during rotation of sink
US20090237938A1 (en) * 2008-03-21 2009-09-24 Koito Manufacturing Co., Ltd. Light source module and vehicular lamp
TW201024160A (en) * 2008-12-23 2010-07-01 Dosun Solar Technology Co Ltd Reflective type bicycle lamp device capable of regulating projection distance of light beam
US20110222303A1 (en) * 2010-03-12 2011-09-15 Koito Manufacturing Co., Ltd. Vehicle headlamp

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040141316A1 (en) * 2002-11-22 2004-07-22 Harald Twardawski Mobile lamp
US20070183164A1 (en) * 2006-02-08 2007-08-09 Koito Manufacturing Co., Ltd. Vehicle headlamp
FR2920516A1 (en) * 2007-09-05 2009-03-06 Koito Mfg Co Ltd Headlight for vehicle, has LED arranged on substrate of light source module, and driving unit rotating heat sink in horizontal direction, where light emitting surface of LED is displaced on focusing surface of lens during rotation of sink
US20090237938A1 (en) * 2008-03-21 2009-09-24 Koito Manufacturing Co., Ltd. Light source module and vehicular lamp
TW201024160A (en) * 2008-12-23 2010-07-01 Dosun Solar Technology Co Ltd Reflective type bicycle lamp device capable of regulating projection distance of light beam
US20110222303A1 (en) * 2010-03-12 2011-09-15 Koito Manufacturing Co., Ltd. Vehicle headlamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016208982B2 (en) * 2015-01-22 2020-03-19 Design Brains Pty Ltd Bicycle light
EP3253621A4 (en) * 2015-02-04 2018-10-24 Slaughter, Christopher Dynamic cycle light distribution system

Also Published As

Publication number Publication date
GB2511077B (en) 2015-06-24
GB201303151D0 (en) 2013-04-10

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20180222