GB2454993A - Load cell unit having a planar antenna - Google Patents
Load cell unit having a planar antenna Download PDFInfo
- Publication number
- GB2454993A GB2454993A GB0821565A GB0821565A GB2454993A GB 2454993 A GB2454993 A GB 2454993A GB 0821565 A GB0821565 A GB 0821565A GB 0821565 A GB0821565 A GB 0821565A GB 2454993 A GB2454993 A GB 2454993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load cell
- load
- cell unit
- unit according
- housing
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
- G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
- G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
- G01G23/3728—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
- G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices
Abstract
A load cell unit comprises a housing having first connection means for a lifting apparatus and second connection means for a load to be lifted. A load cell 3 is located within the housing and is arranged to receive a load applied across the connection means. The housing includes signal transmission means for transmitting a loading measurement recorded by the load cell 3 to a remote receiving device. The signal transmission means includes an antenna 13 which is substantially planar in shape.
Description
I
Load Cell Unit for Weighing Apparatus The pi:cscnr invention relates to a load cell unit for use in weighing al[1tat1s.
Iliis iflvCfltiOfl finds a main application in load cell arrangements LISC in the industrial field where the load cell unit may be located hcr\veen a lifting apparatus, such as a crane or hoist, and waste container, for example a skip. Whilst the present applicarnn proceeds in relation to the use of a weighing appal:atus in relation to waste collection, it will be appreciated that rue present invention can be used for other applications wherein the weighing of bulk material is required.
Ihe collection of waste for disposal or recycling is provided as a SCIV1CC based upon the weight of waste to be collected. The weight of material to be collected is generally unknown and so there is a need for mobile installations which can undertake both weighing and removal of material. Particularly with regard to marcrial foi: 1:ecycling, there is an increasing need to accurately weigh the material upon collection in order to be able to de te i:mi nc an establishment's contribution towards recycling.
Furthermore there is a need to more accurately measure the amount of material intended for landfill sites. These rei1uiremcnts are in addition to those that allow calculation of collection charges based on weight. Additionally knowing the weight carried on a vehicle will help avoid vehicle overloading with benefits of reducing road damage and pollution.
Iii mobile installations weighing devices are generally unreliable, \nd have difficulty in achieving and maintaining the required accuracy for Weights and Measures approval and load cells alone hitherto have not been suitable for installation in the lifting One problem concerns overloads which can damage the Ioadccll and thus compromise the accuracy of the load cell Fm: later use. Another problem is negative loading which can be applied through attempts to compact waste in a skip or by impact with the ground. it vvill be appreciated that, by the narurc o1 the work involved in waste collection, the lifting c(lLI1p1T1C11t IS often used in a haphazard manner, which can result in the load cell being dropped or colliding with objects during transit and use, all of which can reduce the accuracy of measurement by the load cell. Furthermore a load cell is ree1uii:cd to be vertically oriented to obtain an accurate reading.
Known weighing devices are mounted to a crane or hoist in a manner which allows for rotation about only one axis. Any angular displacement about a different axis can cause the weighing device to be aligned away from the vertical and thus kiiown devices cannot adequately account for lifting taking place on an uneven surface.
\ further problem concerns electrical connections required from ri_Ic lilting apparatus to the loadcell located at the end of the lifting cable or chain system. Cabling is required to allow CuflflCCtIUfl to a storage means such that the weight of material collected can be stored for later retrieval or communication.
[he usc of such cabling is disadvantageous in that it can become loose and/or severed resulting in reduced reliability and increased maintenance costs.
\n object of this invention is to provide a construction which, in a most preferred embodiment, can provide an improved level accuracy and overcome at least some, and potentially all, of the aforementioned problems.
Accoi:ding to this invention there is provided a load cell unit comprising a load cell, said load cell being located between first and second body members, the first body member with first COflflCCtioll means for a support member and the second body incmhci: with second connection means for a load to be lifted, wherein rue load cell has onc end thereof connected with one hod member and the other end thereof connected with the uihcr l)ody mcmbcr, said body members being relatively displaCcal)lc when subject to an applied load across the relevant COllflCCtiOll means, and the body members including inter-engaging means limiting the relative displacement thereof.
Preferably the inter-engaging means limits displacement under ippIicd tensile (positive) loads and/or under applied compressive (negative) loads. In one embodiment the application of an applied compressive load beyond a predetermined magnitude causes the load cell and one body mcml)eI: to disengage so as to isolate the load cell from the ipphcd load.
\X/irh rhisar rangement the body members to which the load cell is connected may only extend, under tensile load, by a defined amount thus preventing overloading of the load cell. The load cell is therefore protected from the application of excessive loads to be weighed (tensile load), as vell as damage due to negative loading (compressive loading) which can occur due to a shock, such as, for example, when the load cell unit is dropped to the grouiid.
:\ preferred construction includes a sliding telescopic conneCtion between the body members with abutment means limiting the travel in both an extension direction under load and a reverse compression direction under negative load.
The body members may house the loadcell and in one embodiment, the body members are rectangular in shape. The One body member may include a peripheral groove engaged by a peripheral land on the other body member. The width of the grO)Vc may be greater than the width of the land thus P°' ttinL limited axial movement.
In (>fle embodiment, the load cell unit may include a deformable incmhcr arranged in the force path between tile load cell and either of the first or second body members. Preferably the dclormablc member is elastically dcformable and typically takes the lorm of a spring.
Preferably, the load cell unit includes one or more mounting means for adjustment of tile position and/or orientation of the load ccii. Ihe mounting means may be axially adjustable and lockilu?, means may be provided to fix the loadcell in a required l'hc mounting means can advantageously allow the position of the load cell to be set in an unloaded condition, such ihar the load cell can be calibrated prior to use.
Typically the mounting means includes a threaded bolt.
\ddirionallv, or cisc alternatively, the mounting means may include a curved bearing surface so as to allow pivotal moVefliefli of the load cell with respect to the first and/or second body members. The load cell may be movably mounted to the other body member and preferably in a manner which allows limited lateral movement. The pivotal mounting may be provided at one end of the load cell and the laterally movable mounting may be provided at the other end of the load cell such that the orientation of the load cell can be angularly adjusted to rc1uircd degree.
\ degree of pivotal movement between the load cell and body members advantageously allows the load cell to adopt a vertical oflcfltttiOfl when a load is applied. Substantially removing any horizontal component of the load in this manner improves the accuracy o the loading measurement attainable by the load ccli.
\ddtioiially, jamming between the load cell and any body member oi: between body members is avoided.
\ddi rionallv, or else alternatively, the mounting means may be disposed I1 the force path between the load cell unit and the supporting member. Prefci:ably the mounting means is a p1iet:ictl hearing such that the load cell unit can pivot freely :i 1)011 tWo axes in order to attain a substantially vertical i:i en I a (I ( ) 11.
It is preferred to usc a self-contained load cell that is a unit with associated circuits to enable wireless transmission of the loading mea su red by the cell to a remote receiver.
\ccurding to a further aspect of the present invention, there is provided a load cell unit comprising a housing, said housing having first connection means for a lifting apparatus and second connection means for a load to be lifted, a load cell located within tIic housing and arranged to receive a load applied across the rcic'aiit connection means, the housing including signal transmission means for transmitting a loading measurement recorded l)\' said load cell to a remote receiver.
According to a preferred embodiment, the housing includes a recess for reception of an antenna. The antenna may be substantially planar in shape and located within the recess such that a surface of the antenna is substantially flush with an outer surface of the housing. Preferably an antenna is located with respect to one or more sides of the housing.
\n embodiment of a loadcell unit in accordance with this invention is described below in further detail by way of example and with reference to the drawings, in which: I'igurc I shows a cross-sectional view through a loadcell unit accorditu to the present invention; ligilte 2 shows a front cross-sectional view through a further load cell accutding to the present invention; ligure 3 shows a side cross-sectional view of the load cell of liguru 2: Figure 4 shows a cross-sectional view of a load cell unit bearing; and Liiurc.5 shows a load cell unit in use on a mobile installation.
Referring to figure 1, the load cell unit has a first body member I and a SCCOflCI body member 2. The body members may be a rectangular, cylindrical or U-shaped and engage in a telescopic ur sliding manner so as to permit limited longitudinal muvclflclil. The body member I has an eye Ia for attachment to a lifting apparatus and the body member 2 has an eye 2a for a rrac Ii ment to the load to weighed.
IC) achieve the object of this invention the body members I and 2 ai:e displaceable by a limited distance and this is achieved by a channel or groove 2b in the body member 2 and a cooperating land ut: projectiOn lb on the body member 1. The channel is wider than the projection permitting limited displacement. The channel lb may take the form or any recess shaped to accommodate limited movement of the projection lb and may extend entirely or else only part way around the load cell unit.
A load cell 3 is located between the two body member 1 and 2 wit-h one connection 3a to the body member 2 and the other CW1I'ICCIiOfl 31) to the body member 1 being through a mounting in the form o bolt 4 passing through the floor of a recess 5 to C1LC t hc loadcell. A spring 6 is interposed between the head o the bolt 4 and the floor of the recess. The spring 6 prcftrably comprises one or several conical dished springs also known as a "belleville washers" providing a compact c ii S t F U C i ( ) 0 Oii application of tension loading between the body members I and 2 loading is applied to the loadccll through the comp i:cssion of the spring 6 but with the degree of loading limited through abutment between the channel 2b and land lb. the limited movement prevents overloading of the load cell in a positive (tension) loading direction. The application of negative load i n on the loadcell is limited by the abutment of land lb with he channel 2b in the opposite direction.
lii usc ihe crane is attached to the body I by a pin through eye 1 a and the load attached to body 2 by a pin through eye 2a.
Under normal loads the load cell supports the weight applied and gaps A and B between the sides of channel 2b and sides of land I b arc open. With excessive applied load the spring 5 compresses and gap A closes thus defining the maximum load.
Under compressive loads the load cell moves upward and the load cell mounting is released thus protecting the Ioadcell from compreSSiVe forces.
\ turrher embodiment is shown in figure 2, with the eye portions 1 a and 2a removed. The embodiment of figure 2 operates substantially as described in relation to figure 1 save for the provision of a modified load cell mounting disposed in the force path between the load cell 3 and each the first 1 and SeCond 2 body members.
l'hc bolt 4 passes through a first 7 and a second 8 spring housing within the recess 5 and engages with the load cell. The bolt is threaded such that tightening or loosening of the bolt 4 :idj us is the spring pretension. Thus, the application of a load smaller than the spring pretension will cause no displacement of i he l dv members. When the pretension is exceeded by the loading lorcc, gap A will begin to close. Applying additional load will cause gap A to close completely. Thus the bolt 4 allows calibration of the load ccli unit such that the spring can l)C tciisioiicd to the required degree to facilitate correct opera ijoti of the load cell unit as described below. Once the bolt 4 has been adjusted as required, locking tab 9 can be located against the bolt head to lock the bolt 4 in position. The locking tab pivots into engagement with the bolt head by way of a pin I () which may also be provided with a screw thread to allow righ tening of the same.
The spring 6 is held in place between the first 7 and second 8 sri11g housing members, which are separated by a gap C when the load cell unit is in an unloaded condition. The lower spring housing 8 abuts the floor of the recess 5 and passes through an aperture 5a therein such that it contacts the upper surface of the load cell. \X/hen the spring housing 8 abuts the recess floor, such as when the load cell unit is unloaded or else positively loaded, rhe load cell is separated from the first body member I by a gap D. The gaps C and D are larger than the gaps B and A respectively.
\Xfhcn a positive load is applied sufficient to overload the load cell unit, the gap A will reduce to zero and the load will be supported by the body members I and 2. In this condition the gap C will be non-zero and so the maximum load that can be applied to the load cell is effectively limited. Gap D will increase separating the load cell 3 from the spring housing 7.
Similarly, under a negative, compressive force the gap B will reduce o zero and the spring housing will lift off the recess 5 floor 1) 11 t gap D vill be non-zero, isolating the load cell from IlcganVc ()vcl:loading. Gap C is engineered to be zero when the maxiFflufli allowable compressive force is applied to the spring, preven ring spring damage due to excessive pretension.
Oii application of compressive loading between the body mcmhcrs and 2 loading is not applied to the load cell as the load ccli mounting means is lifted clear off the body member, 1cvcnring compressive forces acting on the loadcell and avoiding overloading of the load cell in a negative (compression) loading direction. The vertical movement is ultimately limited through abutment between the channel 2b and land lb. The mounting between the load cell 3 and the lower body mcml)cr 2 is adjustable and takes the form of a bearing 11. The bearing has a curved surface 11 a which abuts a correspondingly curved surface 2c provided in a recess in the lower body portion 2. The bearing ii is connected to the load cell by a lower bolt 12 and allows the angular orientation to be adjusted. This cnsui:cs accurate transfer of the applied weight to the load cell.
Ihe lower spring housing 8 has a neck portion 8a which is smaller than the aperture 5a through which it passes. Thus the neck portion 8a can move to a limited degree within the aperture 5a. Ihis freedom of lateral movement makes allowance for the angular adjustment at the lower bearing such that the orientation of the load ccli can adjust under application of a load such that it is ari:angcd vertically in order to achieve the desired level of acCLIraCy. Such an. arrangement also reduces or eliminates inaccuracies occurring due to the machining tolerances of the load cell LOut components.
\ locking tat) may also be provided to lock the lower bearing in a hxcd position.
\lterilarivclv it will be understood that the load cell unit could he c()nsirucrcd according to the present invention with the Iflo titi ring bolt disposed between the loadcell and the body mcmher 2 and the bearing 11 located in the body member 1.
\Vhcii the bolt 4 and spring housing are fitted beneath the loadccll 3 in this manner, the body member 2 would be lifted clear o1 the spring housing during negative overloading. Thus it ill be appreciated that a load cell unit according to the present iiivcniioii can effectively operate in an inverted condition Wi rho Ut modification.
l'igure ShowS a side view of the load cell unit of figure 2 with an in legral antenna 13. The antenna is substantially flat in pruhie and is located within a recess of the load cell unit such rhar ihc surface of the antenna is substantially flush with the surFace of the load cell unit. An antenna of this sort may be disc shaped and one or more antennas can be located on any or a liv combination of the front, back or sides of the load cell unit.
The load ccli unit may be self-contained and connected to a remote sensing device through a wireless connection. Thus hardwai:e and software interfaces can be provided to allow weight and/or other data captured by the device to be displayed, pmcessccl and/or stored by a remote device, without the need for a cal)le connection. The load cell unit may include data storage means and the remote devices may be portable or mounted in the cab of the mobile installation and may include, laptop pc's, PDA's, mobile phones, printers or the like.
Furthermore, a vehicle reversing display screen within the cab may usefully employed to display the capture or stored data. ii
\s shown in figure 5, the load ccli unit can be fitted to an ixstInt lifting apparatus such as a crane 14 on a vehicle such as truck 16. The eye 1 a in figure 1 is arranged to receive pin 18 such that the load cell unit is free to rotate about the axis 1 8c of the pin 1$. The engagement between the pin 18 and the eye Ia is shown in further detail in figure 4. A spherical bearing surface I 8a is provided on the pin 18 which sits in relation to the curiespondingly shaped mounting 19 so as to form a FF111111 lOll mounting. In the event that the truck 16 is not on level ground iii that the rear of the truck is disposed either above or bclow the level of the front of the truck, the loadcell unit will pivot about the bearing surface 18a upon application of a load, So as to attain a substantially vertical orientation. The load ccli unit can thus rotate about 2 axes in relation to the pin 1$ as shown by arrows E and F. With an arrangement according to thus invention the stress applied to the ioadcell is limited both in tension and in COlUl)FCSSU)fl whilst maintaining a short overall length. The device can adjust to attain a vertical orientation necessary for Imp i:ovcd accuracy of measurement.
Claims (14)
- \Vhar is claimed is: * *\ load cell unit comprising a housing, said housing having lirst connection means for a lifting apparatus and second conilection means for a load to be lifted, a load cell located within the housing and arranged to receive a load applied across the relevant connection means, the housing iiicludin signal transmission means for transmitting a h L loading measurement recorded by said load cell to a remote receiving device, wherein the signal transmission means includes an antenna and the antenna is substantially in shape.2. .\ load cell unit according to claim 1, wherein the housing includes a recess for reception of the antenna 3. .\ load ccl! unit according to claim 2, wherein the antenna is located within said recess such that a surface of the anrcnna is substantially flush with a surface of the housing.4. *\ load cell unit according to claim 1, wherein the antenna or recess for location of the antenna is located or provided on an interior surface of the housing.5. .\ load cell unit according to claim 1, wherein the antenna or recess for location of the antenna is located or provided on an exterior surface of the housing.6. :\ load cell unit according to claim 1, wherein the housing has two or more sides and an antenna is located with respect to one or more of said sides.Amendments to the claims have been filed as follows \X/hat is claimed is: 1. A load cell unit comprising a load cell, said load cell being located between first and second body members, the first body member with first connection means for a support member and the second body member with second connection means for a load to be lifted, the load cell having one end thereof connected with one body member and the other end thereof connected with rhc other body member, said body members being relatively displaceable when subject to an applied load across the relevant connection means, and the body members including inter-engaging means limiting the relative displacement thereof and wherein the inter-engaging means includes abutment means limiting displacement in each of an extension direction under positive load and a reverse compression direction under negative load. *.SS
- 2. A load cell unit according to claim 1, wherein the first and second body members are telescopically connected. S...S*
- 3. A load cell unit according to claim 1, wherein either of I..rue first or second body members is provided with a * S. groove and the other of the first or second body members is provided with a land.
- 4. A load cell unit according to claim 1, further including a deformable member arranged in the force path between the load cell and either of the first or second body in embers.
- 5. A load cell unit according to claim 4, wherein the deforinable member can be provided with an initial tension by way of adjustable mounting means.
- 6. !\ load cell unit according to claim 1, wherein the unit includes one or more mounting means for adjusting the position and/or orientation of the load cell in relation r:, the applied load.
- 7. A load cell unit according to claim 6, wherein the mounting means is axially adjustable.
- 8. A load cell unit according to claim 7, wherein the mounting means includes a threaded bolt.
- 9. A load cell unit according to claim 6, wherein the mounting means includes locking means for selectively locking the load cell in a required position.
- 1.0. A load cell unit according to claim 6, wherein the mounting means allows adjustment of one of said body members in relation to the other body member. *IS*S
- 1 1. A load cell unit according to claim 6, wherein the mounting means includes a curved bearing surface. 4 *5 4 5 * **4.
- 1 2. A load cell unit according to claim 6, wherein the mounting means is disposed in the force path between the load cell unit and the supporting member.
- 13. A load cell unit according to claim 1, wherein the application of an applied tensile load beyond a predetermined magnitude causes the first and second body members to engage so as to limit the load applied rn the load cell.
- 14. :\ load cell unit according to claim 1, wherein the application of an applied compressive load beyond a predetermined magnitude causes the load cell to disengage with either of the first or second body member so as to isolate the load cell from the applied load. **11. * I. *. I I... * I * ..* III.I II.II * a. I' S * S. * *4IS
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0821565A GB2454993B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0411786A GB0411786D0 (en) | 2004-05-26 | 2004-05-26 | Loadcell for weighing apparatus |
| GB0510680A GB2414562B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
| GB0821565A GB2454993B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2454993A true GB2454993A (en) | 2009-05-27 |
| GB2454993B GB2454993B (en) | 2009-07-08 |
Family
ID=32671117
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0411786A Ceased GB0411786D0 (en) | 2004-05-26 | 2004-05-26 | Loadcell for weighing apparatus |
| GB0510680A Expired - Fee Related GB2414562B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
| GB0821565A Expired - Fee Related GB2454993B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0411786A Ceased GB0411786D0 (en) | 2004-05-26 | 2004-05-26 | Loadcell for weighing apparatus |
| GB0510680A Expired - Fee Related GB2414562B (en) | 2004-05-26 | 2005-05-26 | Load cell unit for weighing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (3) | GB0411786D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901552A (en) * | 2012-10-25 | 2013-01-30 | 梅特勒-托利多(常州)精密仪器有限公司 | Wireless kit for weighing sensor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007017462B4 (en) | 2007-04-10 | 2012-08-30 | Aker Mtw Werft Gmbh | Method for determining focal points in large structures |
| SE1851294A1 (en) * | 2018-10-19 | 2020-04-20 | Indexator Group Ab | A weighing link for a rotator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607926A1 (en) * | 1986-12-09 | 1988-06-10 | Erac Sa | Weighing sensor using an annular strain gauge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2088067B (en) * | 1980-11-06 | 1984-10-17 | Salter & Co Ltd G | Weighing or force measuring apparatus with load cell overload protection arrangement |
| JPH0639310Y2 (en) * | 1989-03-31 | 1994-10-12 | 株式会社寺岡精工 | Scale device |
| US6303882B1 (en) * | 2000-03-10 | 2001-10-16 | Cranium Corporation | Load cell apparatus and method |
-
2004
- 2004-05-26 GB GB0411786A patent/GB0411786D0/en not_active Ceased
-
2005
- 2005-05-26 GB GB0510680A patent/GB2414562B/en not_active Expired - Fee Related
- 2005-05-26 GB GB0821565A patent/GB2454993B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2607926A1 (en) * | 1986-12-09 | 1988-06-10 | Erac Sa | Weighing sensor using an annular strain gauge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901552A (en) * | 2012-10-25 | 2013-01-30 | 梅特勒-托利多(常州)精密仪器有限公司 | Wireless kit for weighing sensor |
| CN102901552B (en) * | 2012-10-25 | 2014-06-04 | 梅特勒-托利多(常州)精密仪器有限公司 | Wireless kit for weighing sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2454993B (en) | 2009-07-08 |
| GB0510680D0 (en) | 2005-06-29 |
| GB0411786D0 (en) | 2004-06-30 |
| GB2414562B (en) | 2009-06-17 |
| GB2414562A (en) | 2005-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20140526 |