Source: https://patents.google.com/patent/DE10334526B4/en
Timestamp: 2020-06-04 12:37:12
Document Index: 544514493

Matched Legal Cases: ['art 2', 'art 2', 'art 5', 'art 5', 'art 5', 'art 6', 'art 5', 'art 5', 'art 5', 'art 6', 'art 5', 'art 6', 'art 31', 'art 31', 'art 33', 'art 33', 'art 33', 'art 33', 'art 33', 'art 39', 'art 33', 'art 40', 'art 6', 'art 5', 'art 2', 'art 32', 'art 31', 'art 33', 'art 33', 'art 31']

DE10334526B4 - Coffee brewing device with locked filter carrier - Google Patents
Coffee brewing device with locked filter carrier
DE10334526B4
DE10334526B4 DE10334526.4A DE10334526A DE10334526B4 DE 10334526 B4 DE10334526 B4 DE 10334526B4 DE 10334526 A DE10334526 A DE 10334526A DE 10334526 B4 DE10334526 B4 DE 10334526B4
DE10334526.4A
DE10334526A1 (en
2003-07-29 Application filed by WMF AG filed Critical WMF AG
2003-07-29 Priority to DE10334526.4A priority Critical patent/DE10334526B4/en
2005-02-17 Publication of DE10334526A1 publication Critical patent/DE10334526A1/en
2015-07-02 Publication of DE10334526B4 publication Critical patent/DE10334526B4/en
239000000969 carrier Substances 0.000 title claims description 62
Coffee brewing device (1) with a brewing chamber (18), consisting of an upper and a lower part (2, 3), which are designed to be movable relative to each other between an open position and a closed brewing position, and at least one in the lower part (3) Brewing chamber (18) inserted, filled with ground coffee filter pad (filter pad), and one of the lower part of the brewing chamber (18) covered filter support (3.1), wherein the filter support (3.1) transverse to the brewing chamber axis (A) between an insertion position for insertion or removal a filter pad and an insertion position is designed movable, characterized in that the filter support (3.1) is locked in simultaneous insertion and brewing by means of the filter support (3.1) and the upper part outside the brewing chamber (18) interlocking positioning, and the positioning are disengaged in the open position, and the upper part (2) together with the associated positioning means along the brewing chamber axis (A) between the open position and the closed brewing position is designed to be movable.
The present invention relates to a coffee brewing apparatus having a brewing chamber, comprising an upper and a lower part, which are designed to be movable relative to each other between an open position and a closed brewing position, at least one filled with ground coffee filter pad (Filterpad ) and a filter carrier encompassed by the lower part of the brewing chamber, wherein the filter carrier is movable transversely to the brewing chamber axis between an insertion position for inserting and removing a filter pad and an insertion position.
Such a coffee brewing device is from the EP 1219216 A1 known.
Another coffee brewing device is from the EP 0904718 A1 known. The device described there is a low-pressure coffee machine. In the low-pressure coffee machines usually with a brewing pressure of 1.2 to 2.0 bar, preferably 1.5 to 1.8 bar worked. In the known device, the lower part of the brewing chamber holds a filter carrier into which a filter pad is inserted. The upper part of the brewing chamber is attached to a pivot cover and is pressed in the closed position by latching the pivot cover on the filter support, so that the filter pad is completely received in the brewing chamber. Hot water is introduced from above into the upper part, wets and penetrates the coffee pad. In this prior art, a strong focus is placed on the fact that in the closed position, the brewing chamber is sufficiently sealed. The positive guidance of the upper part of the lid is largely, if not entirely, largely avoided, the filter pad during the closing process unevenly pressurized. Other coffee brewing devices are in the DE 69210484 T2 and the DE 19606735 A1 described.
Such home-use portion coffee brewing devices are becoming more and more popular and, on the whole, have proven quite well. Nevertheless, efforts are being made to further improve the applications of such brewing devices.
The present invention is therefore based on the object to design a coffee brewing device of the type mentioned in terms of closure in the brewing cheaper.
For this purpose, it is provided that the filter carrier is locked in simultaneous insertion and Bühstellung by means of the filter support and the upper part outside the brewing interlocking positioning, and the positioning means are brought out of engagement in the open position, and the upper part together with the associated positioning means along the brewing chamber axis between the open position and the closed brewing position is designed to be movable.
Although is out of the US 3620155 A also a filter carrier known which can be inserted laterally, however, this coffee preparation device does not have a closed brewing chamber, but from above, only a flat downholder is shut down, which favors the wetting of the filter pad with hot water. A locking of the filter support by the hold-down is not provided.
An advantage of the invention is that the filter carrier is transferred as part of the lower brewing chamber in an insertion position and there the insertion of one or more filter pads can be performed. Subsequently, the filter carrier is returned to its insertion position. So that he occupies the position necessary for closing the brewing chamber in this insertion position, the mentioned positioning means are provided which come into engagement during the transfer from the opening into the brewing position. In this context, it would also be conceivable to provide mechanisms (electrical, mechanical, etc.) which prevent starting of the brewing process, if these positioning means were not properly brought into engagement.
A very simple and inexpensive embodiment provides that the positioning of at least one locking pin and at least one locking hole are formed. In coffee brewing devices, plastics are very often used. In this respect, such locking pins and locking holes are very easy to produce by injection molding with the desired accuracy.
So that the displacement of the filter carrier from the insertion position into the insertion position or vice versa can be accomplished very easily, at least one locking pin is preferably arranged on the upper part of the brewing chamber and at least one locking opening on the filter carrier. This does not cause the filter carrier to get caught in this pull-out or displacement process. Rather, the filter carrier can assume a flat shape for this process.
Conveniently, the filter carrier can be configured in an insert receptacle of a housing that is open at least on one side and can be configured to be pushed out and pushed out. This then works like a drawer. This can be a complete or even a partial withdrawal of the filter support for Insertion of the one or more filter pads are provided.
In an advantageous further embodiment, it is provided that the filter carrier has a receptacle for the at least one filter pad, which is designed as a cup-shaped recess and has a peripheral edge step, and the upper part of the brewing chamber has an annular Aufdrücksteg arranged on the front, in the brewing a horizontal section of the marginal stage is pressed. This ensures that in addition to the positioning in the immediate area of the brewing chamber a certain leadership and a seal are available.
At the upper part of the brewing chamber may be arranged an upper annular seal which is pressed onto an upper sealing surface of the filter carrier in the brewing position. The pressing is preferably carried out outside the brewing chamber, so that a complete seal can be effected by simple means.
Furthermore, in the brewing position, the compression of the upper ring seal may be limited by the pressing of the annular Aufdrückstegs on the peripheral edge step of the filter carrier. The Aufdrücksteg thus additionally acts as an overload protection for the ring seal, as this can only be compressed so far until the Aufdrücksteg is firmly seated on the filter carrier. This ensures a durable seal use.
Also at the bottom of the insertion receptacle, a lower annular seal may be provided, on which a lower sealing surface of the filter support is pressed in the brewing position. This ensures a seal of the removable cassette in the lower area in the brewing position, so that resulting coffee extract flows only to the appropriate outlet openings.
In this connection, the lower ring seal can be arranged in a recess of the bottom of the insertion receptacle and partially project beyond the bottom in the open position, wherein the filter support in the brewing position is in contact with the ground and the lower ring seal is pressed against the lower sealing surface of the filter support , As a result, an overload protection of the lower ring seal is created because the cartridge is from a certain pressure with the bottom of the insertion receptacle in touch and so can not increase the force on the ring seal further.
Furthermore, the invention relates to a coffee brewing apparatus having a brewing chamber, comprising an upper and a lower part, which are designed to be movable relative to one another between an open position and a closed brewing position, with a filter carrier encompassed by the lower part of the brewing chamber. Furthermore, the filter carrier is configured movable transversely to the brewing chamber axis between an insertion position for inserting and removing a filter pad and an insertion position, wherein the filter carrier is locked at the same insertion and brewing position by means of the filter carrier and the upper part outside the brewing interlocking positioning, and the positioning means are disengaged in the open position. The upper part is designed to be movable together with the associated positioning means along the brewing chamber axis between the open position and the closed brewing position. The associated advantages result from the above.
In addition, the invention relates to the use of a filter holder of a coffee brewing device according to one of claims 1 to 11. The filter carrier has positioning means which engageable with positioning means at the upper part of the brewing chamber with simultaneous insertion and brewing engaged and disengaged in the open position are made engageable. The use of such positioning means is particularly suitable for filter carriers, which can be transferred by the drawer principle of an insertion position into an insertion position. A pivoting in an insertion and in an insertion position is possible.
In the following, an embodiment of the present invention is explained in more detail with reference to a drawing. Show it:
1 a side sectional view of the brewing device in a brewing position,
2 a perspective side view of the upper part of the brewing chamber,
3 a front perspective view of the filter support 1 and
4 a sectional view of the filter carrier 3 ,
In the 1 Brewing device shown is part of a low-pressure coffee machine, which includes in known manner not known units, such as water storage tank, boiler device, water pump and required for the brewing and pumping electricity. For this purpose, there are sufficient examples in the prior art, which is why reference is made to this.
1 shows a section through a brewing device according to the invention 1 with an upper brewing chamber part 2 and one as a removable cassette designed filter carrier 3.1 in a housing 4 are arranged. The upper brewing chamber part 2 consists of an internal valve part 5 , a cover 6 and a printing plate 7 , Here is the cover 6 formed such that it is the inner valve part 5 absorbs itself, with only one water connection 8th of the valve part 5 from the cover 6 protrudes. Between the cover part 6 and the valve part 5 are two sealing rings 9 and 10 arranged, wherein the sealing ring 9 at the outlet of the water connection 8th from the cover 6 is placed and the sealing ring 10 , on the outer circumference of the water connection 8th laterally extending valve member 5 , the valve part 5 to the cover 6 seals. At the water connection 8th is at the exposed end a circumferential nose 11 present, which facilitates the connection and attachment of a brewing water line. At the bottom of the water connection 8th leading inlet channel 12 for the brewing water, is a valve ball 13 Arranged with a spring 14 against the pressure plate 7 supported. The valve part 5 lies with its underside on the pressure plate 7 on, with the spring 14 by a projection of the pressure plate 7 to be led. The cover part 6 extends from the lateral sealing ring 10 of the valve part 5 further outward and with its outer edge laterally embodied as a lip seal ring seal 15 between the cover part 6 and the printing plate 7 is placed and in the axial direction down partially over the pressure plate 7 survives. The printing plate 7 has an annular circumferential, in the axial direction downwardly projecting Aufdrücksteg 16 on, as the only part of the pressure plate 7 down and over the lip seal 15 survives.
The printing plate 7 of the upper Brühkammerteils 2 forms together with the filter carrier 3.1 a brewing chamber 18 , For forming the brewing chamber 18 has the filter carrier 3.1 a first designed as a cup-shaped recess recording 17 on, in the middle of the brewing chamber outlet in the form of a nozzle plate 19 located. In the side area, the first shot has a peripheral border 20 on, on the the Aufdrücksteg 16 the printing plate 7 imprints. At this edge level 20 closes in the form of another paragraph, the upper filter support wall 21 on top of which is the upper sealing surface 21.1 to which the sealing ring 10 in the brewing position, provides. The filter carrier 3.1 has a handle on one side 22 on, with which the filter carrier 3.1 in the open position from the brewing device 1 can be pulled out. For this purpose, the housing 4 on the side of the handle 22 a corresponding insertion opening 4.1 on.
The filter carrier 3.1 rests on its underside with its lower filter carrier wall 21 that the lower sealing surface 21.2 provides on one the bottom of the insertion opening 4.1 forming support plate 23 from the side over the housing 4 survives and is connected to it. The support plate 23 has a recess in the form of a radially circumferential groove 24 on, in which a ring seal 25 is arranged in the open position of the brewing device 1 over the support plate 23 protrudes. The support plate 23 has a flow in the middle 26 with a pulled down splash guard 27 on. The support plate 23 points between the contact area of the filter carrier 3.1 and the process 26 a gradient on the safe flow of the brewing chamber 18 coming coffee in the spout 28 allows.
The spout which tapers around in its middle area 28 is in a recess of the support plate 23 disposed through the axially extending annular portion 29 the support plate 23 is formed. The spout 28 directs the coffee to at least one, usually two, not shown, outlet spout (s).
To the upper Brühkammerteil 2 to move in the axial direction, is the cover 6 with a ring-shaped pressing part extending in the axial direction 31 connected. On the outer circumference of the press-on part 31 is a guide bridge 32 formed, which is helical around the outer periphery of the pressing member 31 extends. Around the outer circumference of the press-on part 31 is still the operating part 33 placed above the guide bar 32 extends to the top of the housing. The likewise ring-shaped actuating part 33 is how in 2 clearly recognizable, ramp-shaped, and is rotatable about the press-on 31 arranged. Through an opening slot 35 at the front of the housing 4 is the operating part 33 with a handle 36 connected. This is the handle 36 on the threaded connector 37 bolted coaxially to the upper edge of the operating part 33 is arranged and with a guide section 38 protrudes into the opening slot. The actuating part 33 continues to tick 34 on top of the guide bar 32 embraces. The guide bar 32 has a horizontal web part 39 up in the in 2 shown brewing position with the hook 34 of the operating part 33 communicates in order to forward the pressure forces arising in the brewing in the vertical direction. Furthermore, the guide bar 32 a horizontal web part 40 on, in the lower end of the helical guide bar 32 is arranged and as a stop of the lifting device for the open position of the brewing device 1 serves. At the cover part 6 are two locking pins 41 arranged in the axial direction down over the bridge 16 the printing plate 7 protrude and into corresponding locking holes 43 of the filter carrier 3.1 intervene to get this in to position the brewing position and pulling out the filter carrier 3.1 to prevent.
The back of the filter carrier 3.1 is also with a designed as a cup-shaped recess recording 17.1 Mistake. The recording 17.1 also has a borderline 20.1 on, which is engageable with the Aufdrücksteg, in a suitable position. The recording 17.1 is flatter than the picture 17 and serves to accommodate a single, not shown, filled with ground coffee filter pad (Filterpad). In the recording 17 On the other hand, two filter pads can be arranged one above the other. The filter carrier may vary from the in 1 shown insert position after the drawer principle in an insertion position for inserting the at least one filter pads are pulled out. Of course, this can only be in the open position of the brewing chamber 18 respectively. From the 3 and 4 you can still see that the ground 44 and 44.1 the recordings 17 . 17.1 with overlay brushes 45 . 45.1 are provided, which favor a Aufquillen of the filter pad thereon during the brewing process. This is also the central outlet with a raised rim 46 respectively. 46.1 provided, which has the same height as the support webs 45 respectively. 45.1 ,
For completeness, it should be mentioned that the underside of the filter carrier 3.1 also rectangular locking holes 43 having.
In the following, the operation and operation of the above-described brewing device will now be 1 explained in more detail.
In the in 1 closed brewing position shown are usually in the brewing chamber 18 arranged two superimposed filter pads. A circumferential sealing edge of the upper filter pad is located on the top of the edge step 20 on and is therefore in the brewing position between the edge stage 20 and the push-up bar 16 , In this closed brewing position, hot water from a pump not shown in detail is connected via a connecting line and the water connection 8th the valve part 5 fed. The pressure of the water becomes the spring 14 by means of the valve ball 13 compressed, the valve ball 13 releases from its valve seat and a water inlet to the brewing chamber 18 allows. Depending on the design of the nozzle plate 19 and the pump can be in the brewing chamber closed to the environment 18 in a brewing device used in a low-pressure coffee machine 1 a Brühdruck between 1.2 and 2.0 bar, preferably 1.5 to 1.8 bar, are constructed. The coffee pads are first moistened by the water and in the further course flows through the brewing water, which at the nozzle plate 19 from the brewing chamber 18 exit and over the expiration 26 and the spout 28 from the outlet or spouts from the brewing device 1 is delivered. The support plate 23 is in the area under the brewing chamber 18 the end 26 tilted to ensure a safe and complete flow of coffee. After a certain, adjustable period or a funded amount of water, the pump is switched off again and thus the brewing process ended.
After the end of the brewing process, the brewing chamber 18 by pivoting back the handle 36 be opened again. When swinging back the handlebar 36 becomes the upper brewing chamber part 2 moved upwards in the axial direction because of the guide bar 32 from the hook 34 is encompassed. The hook 34 transmits the by the rotational movement of the operating part 32 induced axial movement in the direction of the open position over the guide bar 32 on the press-on part 31 and thus on the upper Brühkammerteil 2 , It is therefore the pivoting movement of the handle 36 about the axis A and the associated rotational movement of the operating part 33 an axial lifting of the pressure plate 7 caused.
In the open position, not shown, the conical locking pins are 41 from the locking holes 43 of the filter carrier 3.1 moved out and release this. The printing plate 7 is also so far moved up that the Aufdrücksteg 16 above the lower edge of the insertion opening 4.1 located. In this open position, the filter carrier 3.1 along with the used, moistened by the brewing water coffee pads with the help of the handle 22 like a drawer from the slot 4.1 be pulled out. After removal of the coffee pads from the recording 17 can the filter carrier 3.1 for another brewing be refilled with coffee pads, or unfilled in the insertion opening 4.1 be pushed back.
But in the following a simple coffee portion, z. B. with a different type of coffee or a decaffeinated coffee, are produced, so the filter carrier 3.1 be turned around so that the recording 17.1 now at the top. In the recording 17.1 Then a single coffee pad is inserted so that the sealing edge of the coffee pad on the edge stage 20.1 rests. Now the filter carrier 3.1 back into the slot 4.1 inserted. Subsequently, with the help of the handle 36 the actuating part 33 moves, causing the pressure plate 7 together with the press-on part 31 is moved down until the Aufdrücksteg 16 on the sealing edge and the marginal stage 20.1 imprints. At the same time drive the locking pin 41 in the locking holes 43 that also on this side of the filter carrier 3.1 are arranged. The conical design of the locking pin 41 ensures that even when not fully inserted filter carrier 3 the locking pins 41 nevertheless in the locking openings 43 engage and during the closing process the filter carrier 3.1 Pull or press in the correct position. The force generated by the operation of the handle 36 and the lifting mechanism is applied is so large that a sufficient seal of the brewing chamber 18 by pressing on the ring seals 15 and 25 brought about.
Coffee brewing device ( 1 ) with a brewing chamber ( 18 ), consisting of an upper and a lower part ( 2 . 3 ), which are designed to be movable relative to one another between an open position and a closed brewing position, and at least one into the lower part (FIG. 3 ) of the brewing chamber ( 18 ), filled with ground coffee filter pad (filter pad), and one from the lower part of the brewing chamber ( 18 ) included filter carriers ( 3.1 ), wherein the filter carrier ( 3.1 ) is arranged movable transversely to the brewing chamber axis (A) between an insertion position for inserting or removing a filter pad and an insertion position, characterized in that the filter carrier ( 3.1 ) with simultaneous insertion and brewing by means of the filter carrier ( 3.1 ) and the upper part outside the brewing chamber ( 18 ) is interlocked in positioning positioning means, and the positioning means are disengaged in the open position, and the upper part ( 2 ) along with the associated positioning means along the Brühkammerachse (A) between the open position and the closed brewing position is designed to be movable.
Contraption ( 1 ) according to claim 1, characterized in that the positioning means of at least one locking pin ( 41 ) and at least one locking opening ( 43 ) are formed.
Contraption ( 1 ) according to claim 2, characterized in that the locking pin ( 41 ) is tapered to its free end.
Contraption ( 1 ) according to claim 2 or 3, characterized in that the at least one locking pin ( 41 ) at the upper part ( 2 ) of the brewing chamber ( 18 ) and the at least one locking opening ( 43 ) on the filter carrier ( 3.1 ) are arranged.
Contraption ( 1 ) according to one of the preceding claims, characterized in that the filter carrier ( 3.1 ) in an at least one side open insertion receptacle ( 4.1 ) of a housing ( 4 ) is configured on and pushed out.
Contraption ( 1 ) according to one of the preceding claims, characterized in that the filter carrier ( 3.1 ) a recording ( 17 . 17.1 ) for the at least one filter pad, which is designed as a cup-shaped depression and a peripheral edge step ( 20 . 20.1 ) and the upper part of the brewing chamber ( 18 ) an end face arranged annular Aufdrücksteg ( 16 ) in the brewing position on a horizontal portion of the edge stage ( 20 . 20.1 ) is pressed.
Contraption ( 1 ) according to one of the preceding claims, characterized in that at the upper part ( 2 ) of the brewing chamber ( 18 ) an upper ring seal ( 15 ) arranged on an upper sealing surface ( 21.1 ) of the filter carrier ( 3.1 ) is pressed in the brewing position.
Contraption ( 1 ) according to claim 7, characterized in that in the brewing position, the compression of the upper ring seal ( 15 ) by pressing the annular Aufdrückstegs ( 16 ) on the peripheral edge of the filter carrier ( 3.1 ) is limited.
Contraption ( 1 ) according to one of the preceding claims, characterized in that at the bottom of the insertion receptacle ( 4.1 ) a lower ring seal ( 25 ) is provided, to which a lower sealing surface ( 21.2 ) of the filter carrier ( 3.1 ) is pressed in the brewing position.
Contraption ( 1 ) according to claim 9, characterized in that the lower ring seal ( 25 ) in a recess ( 24 ) of the bottom of the insertion receptacle ( 4.1 ) is arranged and in the open position partially projects beyond the bottom, wherein the filter carrier ( 3.1 ) is in contact with the ground in the brewing position and the lower ring seal ( 25 ) to the lower sealing surface ( 21.2 ) of the filter carrier ( 3.1 ) is pressed.
Coffee brewing device ( 1 ) with a brewing chamber ( 18 ), consisting of an upper and a lower part, which are designed to be movable relative to each other between an open position and a closed brewing position, and with a from the lower part of the brewing chamber ( 18 ) included filter carriers ( 3.1 ), wherein the filter carrier ( 3.1 ) is arranged movable transversely to the brewing chamber axis (A) between an insertion position for inserting or removing the at least one filter pad and an insertion position, characterized in that the filter carrier ( 3.1 ) with simultaneous insertion and brewing by means of the filter carrier ( 3.1 ) and the upper part outside the brewing chamber ( 18 ) is interlocked in positioning positioning means, and the positioning means are disengaged in the open position, and the upper part ( 2 ) together with the associated positioning means along the Brühkammerachse (A) between the Opening position and the closed brewing position is designed to be movable.
Use of a filter carrier ( 3.1 ) in a coffee brewing device ( 1 ) according to one of claims 1 to 11, characterized in that this positioning means, which in the insertion and brewing position outside of the brewing chamber ( 18 ) with positioning means on the upper part ( 2 ) of the brewing chamber ( 18 ) are interlocking and in the open position out of engagement engageable configured.
DE10334526.4A 2003-07-29 2003-07-29 Coffee brewing device with locked filter carrier Expired - Fee Related DE10334526B4 (en)
DE10334526.4A DE10334526B4 (en) 2003-07-29 2003-07-29 Coffee brewing device with locked filter carrier
DE10334526A1 DE10334526A1 (en) 2005-02-17
DE10334526B4 true DE10334526B4 (en) 2015-07-02
ID=34071968
DE10334526.4A Expired - Fee Related DE10334526B4 (en) 2003-07-29 2003-07-29 Coffee brewing device with locked filter carrier
DE (1) DE10334526B4 (en)
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DE69210484T2 (en) * 1991-07-05 1996-09-12 Nestle Sa Device for extracting cartridges
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DE69321209T2 (en) * 1992-07-20 1999-02-18 Nestle Sa Method and device for the extraction of imperperable, deformable portion packs
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2003-07-29 DE DE10334526.4A patent/DE10334526B4/en not_active Expired - Fee Related
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DE10334526A1 (en) 2005-02-17
DE60218980T2 (en) 2007-11-29 Apparatus for injecting water into a device for preparing a drink from a capsule
CN101754704B (en) 2012-09-26 Improvements in or relating to beverage preparation machines
US8443718B2 (en) 2013-05-21 Device for preparing a beverage with removable injection member
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Owner name: WMF WUERTTEMBERGISCHE METALLWARENFABRIK AKTIEN, DE
Free format text: FORMER OWNER: PAV PATENTVERWERTUNG KG, 83395 FREILASSING, DE
Free format text: FORMER OWNER: WMF WUERTTEMBERGISCHE METALLWARENFABRIK AKTIENGESELLSCHAFT, 73312 GEISLINGEN, DE
2015-03-12 R018 Grant decision by examination section/examining division