Patent Publication Number: US-2023163008-A1

Title: Load port adapter

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a U.S. National Stage Application of International Application No. PCT/JP2021/009932, filed on Mar. 11, 2021, and claims priority under 35 U.S.C. § 119(a) and 35 U.S.C. § 365(b) from Japanese Patent Application No. 2020-046405, filed on Mar. 17, 2020; the disclosures of which are incorporated herein by reference. 
    
    
     FIELD 
     Various embodiments of the present disclosure relate] to a load port adapter. 
     BACKGROUND 
     A load port is known as an apparatus for opening and closing a lid of a substrate storage container storing a substrate. There is known a load port including a stage on which a Front Opening Unified Pod (FOUP) serving as a substrate storage container can be mounted, a clamping means capable of clamping a bottom surface of the FOUP, a suction means that sucks and holds a lid of the FOUP, and a door that opens and closes the lid held by the suction means. 
     In the load port, an open cassette can be mounted in addition to the FOUP. Additionally, the load port determines which one of the FOUP and the open cassette is mounted, based on determination as to whether the suction means completes a suction operation at the same time with performing the suction operation. 
     Incidentally, the configuration, dimensions, and the like of the load port as described above are determined according to standards. Additionally, the configuration, dimensions, and the like of the FOUP to be mounted on the load port are also determined according to standards. Therefore, unless a storage container has the same configuration and dimensions as those of the FOUP, the storage container cannot be mounted on the load port in a stable and positioned state. 
     On the other hand, even a storage container having a configuration, dimensions, and the like different from those of the FOUP is required to be mounted on the load port in a stable and positioned state. 
     SUMMARY 
     A load port adapter according to an embodiment of the present disclosure is a load port adapter fixable on a mounting table of a load port. The load port adapter includes a holder capable of holding a cassette capable of accommodating a plurality of circuit boards. The holder includes a position adjustment mechanism configured to position the cassette at a reference position, and is fixable on the mounting table of the load port. 
     The above and other elements, features, steps, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of the preferred embodiments with reference to the attached drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view illustrating a schematic configuration of a load port according to an embodiment; 
         FIG.  2    is a perspective view illustrating a state where a load port adapter is attached to the load port; 
         FIG.  3    is a perspective view illustrating a schematic configuration of the load port adapter; 
         FIG.  4    is a perspective view illustrating a state where a cover of the load port adapter is removed; 
         FIG.  5    is a perspective view illustrating a schematic configuration of a cassette; and 
         FIG.  6    is a bottom view of the cassette. 
     
    
    
     DETAILED DESCRIPTION 
     At least one embodiment of the present disclosure will be described below in detail with reference to the drawings. Note that, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated. Additionally, the dimensions of constituent members in each drawing do not faithfully represent the actual dimensions of the constituent members, the dimensional ratio of each constituent member, or the like. 
     Note that, in the following description, a vertical direction in a state where a load port  100  is installed is referred to as an “up and down direction”. 
       FIG.  1    is a perspective view illustrating a schematic configuration of the load port  100  to which a load port adapter according to an embodiment of the present disclosure is to be attached. The load port  100  is a table on which a cassette accommodating a circuit board that is an inspection object and is made of resin is to be mounted when the circuit board is supplied to an inspection apparatus (not illustrated). 
     Note that, a cassette  200  is a storage container having a configuration, dimensions, and the like different from those of a Front Opening Unified Pod (FOUP) whose configuration, dimensions, and the like are determined according to standards. 
     The load port  100  includes a supply part  110  and a support  120 . The supply part  110  is a part that supplies a circuit board to the inspection apparatus. The support  120  supports a cassette accommodating the circuit board when the circuit board is supplied from the supply part  110  to the inspection apparatus. The supply part  110  is supported by the support  120 . 
     The support  120  includes a support body  121 , a plurality of wheels  122 , a support base  123 , and a mounting table  124 . The support body  121  is a columnar member extending in the up and down direction. The support body  121  supports the support base  123  and the mounting table  124 . The plurality of wheels  122  are attached to a lower end of the support body  121 . The support base  123  is fixed to an upper end of the support body  121 . The mounting table  124  is fixed on the support base  123 . 
       FIG.  2    is a perspective view illustrating a state where a load port adapter  1  to be described later is fixed on the mounting table  124 . The load port adapter  1  allows the cassette  200  to be clamped to the mounting table  124 . That is, the cassette  200  is clamped on the mounting table  124  of the load port  100  through the load port adapter  1 . Note that, a detailed configuration of the cassette  200  will be described later. Here,  FIG.  2    illustrates, for the sake of explanation, the load port adapter  1  with a cover  60  removed. 
     As illustrated in  FIG.  1   , the mounting table  124  includes a plurality of detection sensors  124   a . The plurality of detection sensors  124   a  are sensors for detecting whether the FOUP is mounted on the mounting table  124 . When the cassette  200  is clamped on the mounting table  124  through the load port adapter  1  as in the present embodiment, only one of the plurality of detection sensors  124   a  is used as a cassette detection sensor that detects whether the cassette  200  is located on the load port adapter  1 . 
     Each of the plurality of detection sensors  124   a  is a displacement detection sensor that outputs a detection signal when a force is applied from above and a detection unit is displaced downward. In the present embodiment, the plurality of detection sensors  124   a  are three detection sensors. When the mounting table  124  is viewed from above, the three detection sensors  124   a  are disposed in a triangular shape. 
     As will be described in detail later, as illustrated in  FIG.  2   , the load port adapter  1  includes an advancing and retracting pin  11   b  that comes into contact with one detection sensor  124   b  of the plurality of detection sensors  124   a . The one detection sensor  124   b  functions as the cassette detection sensor together with the advancing and retracting pin  11   b . Note that, the remaining detection sensors are positioned inside the load port adapter  1  and are not exposed to the outside of the load port adapter  1 . The load port adapter  1  may include two or more advancing and retracting pins  11   b  that come into contact with the detection sensor  124   b.    
     As illustrated in  FIG.  1   , the supply part  110  is a plate-shaped member and has a supply opening  111 . That is, the supply part  110  has a frame shape. Additionally, the supply part  110  includes a lid  112  that opens and closes the supply opening  111 . The lid  112  is movable with respect to the supply opening  111 . 
     When the detection sensor  124   b  of the mounting table  124  detects a state where the cassette  200  is mounted on the mounting table  124 , the lid  112  moves from a position where the supply opening  111  is closed to a position where the supply opening  111  is open. That is, the lid  112  opens the supply opening  111  of the supply part  110  when the circuit board accommodated in the cassette  200  is supplied to the inspection apparatus. 
       FIGS.  3  and  4    are perspective views each illustrating a schematic configuration of the load port adapter  1 .  FIG.  4    is a perspective view illustrating a state where the cover  60  of the load port adapter  1  is removed. The load port adapter  1  includes a holder  10  and a frame  50 . 
     The holder  10  has a flat plate shape and holds the cassette  200 . The frame  50  is a frame-shaped member extending in a direction orthogonal to the holder  10 . The frame  50  covers a part of the supply part  110 . The frame  50  has an opening  51  connected to the supply opening  111  in a state of covering the supply part  110 . 
     As illustrated in  FIG.  2   , in a state where the cassette  200  is clamped to the load port adapter  1  fixed to the load port  100 , the frame  50  covers a gap between the supply opening  111  of the load port  100  connected to an opening  200   b  (described later) of the cassette  200  and an outer periphery of the cassette  200  on an opening  200   b  side. This can prevent an operator from inserting his or her hand, finger, or the like into the gap between the supply opening  111  of the load port  100  and the cassette  200 . Thus, when the cassette  200  is used for the load port  100 , safety can be improved. 
     As illustrated in  FIGS.  3  and  4   , the holder  10  includes a holder body  11 , a plurality of cassette positioning parts  12 , and a plurality of cassette clamping parts  20 ,  30 , and  40 . The position of the cassette  200  with respect to the load port adapter  1  is adjusted by the plurality of cassette positioning parts  12  and the plurality of cassette clamping parts  20 ,  30 , and  40 . That is, the plurality of cassette positioning parts  12  and the plurality of cassette clamping parts  20 ,  30 , and  40  can constitute a position adjustment mechanism  15  in embodiments of the present disclosure. 
     The holder body  11  is a flat plate-shaped member. The plurality of cassette positioning parts  12  are fixed to the holder body  11 . Additionally, the holder body  11  has an accommodating recess  11   a  that accommodates the plurality of cassette clamping parts  20 ,  30 , and  40 . The accommodating recess  11   a  is covered with the cover  60 . 
     The holder body  11  includes the advancing and retracting pin  11   b  with which the detection sensor  124   b  of the load port  100  comes into contact, in a state where the load port adapter  1  is fixed on the mounting table  124  of the load port  100 . A lower portion of the advancing and retracting pin  11   b  is located in a through hole (not illustrated) of the holder body  11 . In the state where the load port adapter  1  is fixed on the mounting table  124  of the load port  100 , a distal end of the detection sensor  124   b  of the load port  100  is located in the through hole. The advancing and retracting pin  11   b  whose lower portion is located in the through hole can advance and retract in a thickness direction with respect to the holder body  11 . 
     When the load port adapter  1  is set on the mounting table  124  of the load port  100 , the detection sensor  124   b  of the load port  100  pushes the advancing and retracting pin  11   b  upward. When the cassette  200  is set on the load port adapter  1 , the cassette  200  pushes the detection sensor  124   b  downward through the advancing and retracting pin  11   b . Thus, seating of the cassette  200  can be detected. 
     The plurality of cassette positioning parts  12  position a bottom of the cassette  200  to be described later with respect to the holder body  11 . That is, each of the plurality of cassette positioning parts  12  includes an L-shaped protruding portion  12   a  when the holder body  11  is viewed from above. The protruding portions  12   a  of the plurality of cassette positioning parts  12  come into contact with outer portions of corners of the bottom of the cassette  200 , thus positioning the cassette  200  with respect to the holder body  11 . 
     Here, in the present embodiment, the plurality of cassette positioning parts  12  are four cassette positioning parts. The four cassette positioning parts  12  position the bottom of the cassette  200  to be described later with respect to the holder body  11 . 
     The plurality of cassette clamping parts include a first cassette clamping part  20 , a second cassette clamping part  30 , and a third cassette clamping part  40 . 
     The first cassette clamping part  20  presses the cassette  200  mounted on the load port adapter  1  against a reference position X. The reference position X is a position of one of two corners located on a frame  50  side of the holder body  11 . In the cassette  200  clamped on the load port adapter  1 , the reference position X is a reference position on a load port adapter  1  side when the circuit board is taken out from the cassette  200 . 
     As will be described in detail later, the reference position X is a position where a corner located on an opening side among the four corners of the cassette  200  is located on the load port adapter  1  in a state where the cassette  200  is clamped to the load port adapter  1 . 
     When the load port adapter  1  is viewed from above, the first cassette clamping part  20  obliquely pushes the cassette  200  from a central portion of the holder body  11  toward the reference position X. 
     The first cassette clamping part  20  includes a contact part  21  and a drive part  22 . The contact part  21  comes into contact with a protrusion (not illustrated) located at the bottom of the cassette  200 . As indicated by solid double arrows in  FIGS.  2  and  4   , the drive part  22  reciprocates the contact part  21  in one direction. That is, when the load port adapter  1  is viewed from above, the drive part  22  moves the contact part  21  from the central portion of the holder body  11  toward the reference position X. 
     Specifically, the drive part  22  includes an actuator  23  and a coupling shaft  24 . A distal end of the coupling shaft  24  is connected to the contact part  21 . The actuator  23  is, for example, a cylinder mechanism or the like that moves the coupling shaft  24  in an axial direction. 
     The second cassette clamping part  30  presses the cassette  200  mounted on the load port adapter  1  against the frame  50 . Similarly to the first cassette clamping part  20 , the second cassette clamping part  30  also includes a contact part  31  and a drive part  32 . 
     The contact part  31  comes into contact with a protrusion (not illustrated) located at the bottom of the cassette  200 . As indicated by solid double arrows in  FIGS.  2  and  4   , the drive part  32  reciprocates the contact part  31  in a direction different from the direction in which the contact part  21  of the first cassette clamping part  20  moves. That is, when the load port adapter  1  is viewed from above, the drive part  32  moves the contact part  31  from the central portion of the holder body  11  toward the frame  50 . 
     Specifically, the drive part  32  includes an actuator  33  and a coupling shaft  34 . A distal end of the coupling shaft  34  is connected to the contact part  31 . The actuator  33  is, for example, a cylinder mechanism or the like that moves the coupling shaft  34  in the axial direction. 
     The third cassette clamping part  40  clamps the cassette  200  mounted on the load port adapter  1  to the load port adapter  1  together with the first cassette clamping part  20  and the second cassette clamping part  30 . When the load port adapter  1  is viewed from above, the third cassette clamping part  40  pushes the cassette  200  in a direction opposite to the second cassette clamping part  30 . That is, the third cassette clamping part  40  pushes the cassette  200  in a direction different from the direction toward the reference position X. 
     Similarly to the first cassette clamping part  20  and the second cassette clamping part  30 , the third cassette clamping part  40  also includes a contact part  41  and a drive part  42 . The contact part  41  comes into contact with a protrusion (not illustrated) located at the bottom of the cassette  200 . As indicated by solid double arrows in  FIGS.  2  and  4   , the drive part  42  reciprocates the contact part  41  in a direction different from the directions in which the contact part  21  of the first cassette clamping part  20  and the contact part  31  of the second cassette clamping part  30  move. That is, when the load port adapter  1  is viewed from above, the drive part  42  moves the contact part  41  from the central portion of the holder body  11  toward the side opposite to the frame  50 . 
     Specifically, the drive part  42  includes an actuator  43  and a coupling shaft  44 . A distal end of the coupling shaft  44  is connected to the contact part  41 . The actuator  43  is, for example, a cylinder mechanism or the like that moves the coupling shaft  44  in the axial direction. 
     The force with which the first cassette clamping part  20  and the second cassette clamping part  20  push the cassette  200  toward the reference position X is larger than the force with which the third cassette clamping part  40  pushes the cassette  200  in a direction different from the reference position X. 
     Here, the plurality of cassette clamping parts  20 ,  30 , and  40  of the load port adapter  1  are driven and controlled by a controller (not illustrated). Additionally, the controller receives a signal output from the detection sensor  124   b . The controller may control driving of the plurality of cassette clamping parts  20 ,  30 , and  40  based on the signal, or may control opening and closing of the lid  112  of the load port  100 . 
       FIG.  5    is a perspective view illustrating a schematic configuration of the cassette  200 . The cassette  200  is a cubic box-shaped member. That is, the cassette  200  has a space  200   a  surrounded by a plurality of flat plate-shaped walls  201  to  205 . The cassette  200  can accommodate a plurality of circuit boards arranged in the thickness direction. The cassette  200  has the opening  200   b  in one surface thereof. The opening  200   b  is located on an opening  51  side of the frame  50  in a state where the cassette  200  is clamped on the load port adapter  1 . 
     The cassette  200  includes a movable wall  210  that moves laterally in the internal space  200   a  in a state of being parallel to the lateral wall  201  constituting the cassette  200 . A moving direction of the movable wall  210  is indicated by a white double arrow in  FIG.  5   . 
     The movable wall  210  and the lateral wall  201  facing the movable wall  210  each have a plurality of slits  220  on their facing surfaces. The plurality of slits  220  extend from an opening  200   b  side toward the wall  203  on a side opposite to the opening  200   b . This allows the plurality of slits  220  of the movable wall  210  and the plurality of slits  220  of the lateral wall  201  facing the movable wall  210  to hold the plurality of circuit boards in a state of being arranged in the thickness direction. 
     In the cassette  200  having such a configuration, by moving the movable wall  210  laterally with respect to the lateral wall  201  facing the movable wall  210 , even when the size of the circuit board is changed, the circuit board can be held, in the state of being arranged in the thickness direction, by the plurality of slits  220  of the movable wall  210  and the plurality of slits  220  of the lateral wall  201  facing the movable wall  210 . 
     In the state where the cassette  200  is clamped on the load port adapter  1 , among the walls  201  to  205  defining the opening  200   b  of the cassette  200 , the lateral wall  201  having the plurality of slits  220  is positioned at the reference position X. In the lateral wall  201  having the plurality of slits  220 , a portion defining the opening  200   b  is a reference position Y on a cassette  200  side. The reference position Y overlaps with the reference position X on the load port adapter  1  side in a state where the cassette  200  is clamped on the load port adapter  1  as illustrated in  FIG.  2   . 
     Note that, the reference positions X and Y are used as a starting point of a conveyance position, for example, when a conveyance device such as a robot arm conveys the circuit board from the cassette  200  clamped on the load port adapter  1  to an inspection apparatus (not illustrated). 
       FIG.  6    is a bottom view of the cassette  200 . In  FIG.  6   , alternate long and short dash lines indicate contact positions of the contact part  21  of the first cassette clamping part  20 , the contact part  31  of the second cassette clamping part  30 , and the contact part  41  of the third cassette clamping part  40  with respect to the cassette  200 . 
     The cassette  200  includes plate-shaped attachment parts  205   a  to  205   d  respectively on four sides of the wall  205  located on the bottom surface thereof. The attachment parts  205   a  to  205   d  are fixed in a state of being separated from the wall  203  in the thickness direction. The cassette  200  further includes diagonal braces  205   e  to  205   h  at four corners of the wall  205 . The diagonal braces  205   e  to  205   h  each connect the attachment parts  205   a  located on adjacent sides of the four sides. 
     When the cassette  200  is clamped on the load port adapter  1 , the contact part  21  of the first cassette clamping part  20 , the contact part  31  of the second cassette clamping part  30 , and the contact part  41  of the third cassette clamping part  40  come into contact with the cassette  200  at the following respective positions. 
     The contact part  21  of the first cassette clamping part  20  is inserted between the wall  205  and the diagonal brace  205   f  located on the opening  200   b  side of the cassette  200 . Thus, the first cassette clamping part  20  comes into contact with the diagonal brace  205   f  of the cassette  200  to clamp the cassette  200 . 
     The contact part  31  of the second cassette clamping part  30  is inserted between the wall  205  and the attachment part  205   a  located on the opening  200   b  side of the cassette  200 . Thus, the second cassette clamping part  30  comes into contact with the attachment part  205   a  of the cassette  200  to clamp the cassette  200 . 
     The contact part  41  of the third cassette clamping part  40  is inserted between the wall  205  and the attachment part  205   c  located on the side opposite to the opening  200   b  of the cassette  200 . Thus, the third cassette clamping part  40  comes into contact with the attachment part  205   c  of the cassette  200  to clamp the cassette  200 . 
     As described above, the load port adapter  1  of the present embodiment is a load port adapter fixable on the mounting table  124  of the load port  100 . The load port adapter  1  includes the holder  10  capable of holding the cassette  200  capable of accommodating a plurality of circuit boards. The holder  10  includes the position adjustment mechanism  15  configured to position the cassette  200  at the reference position X. The holder  10  is fixable on the mounting table  124  of the load port  100 . 
     This allows the cassette  200  capable of accommodating the circuit board to be set on the mounting table of the load port  100 . Thus, versatility of the load port  100  can be improved. 
     Generally, the cassette can accommodate circuit boards of various sizes. Consequently, the cassette has a predetermined reference position serving as reference when the circuit board is taken out from the cassette. Positioning the reference position of the cassette at the reference position of the adapter can determine the position of the cassette with respect to the load port to which the adapter is fixed. 
     As described above, since the holder  10  includes the position adjustment mechanism  15 , the cassette  200  can be positioned at the reference position X of the load port adapter  1 . Thus, the cassette  200  can be easily positioned with respect to the load port  100  to which the load port adapter  1  is attached. Consequently, the cassette  200  can be mounted on the load port  100  in a stable and positioned state. 
     The position adjustment mechanism  15  includes a plurality of cassette clamping parts  20 ,  30 , and  40  that clamp the cassette  200  while pressing the cassette  200  toward the reference position X. 
     This allows the cassette  200  to be clamped to the load port adapter  1  in a state of being positioned at the reference position X of the load port adapter  1 . 
     The plurality of cassette clamping parts  20 ,  30 , and  40  press the cassette  200  in different directions when the holder  10  is viewed in plan view. 
     This allows the cassette  200  to be pressed in different directions when the holder  10  is viewed in plan view. Thus, the cassette  200  can be more reliably held with respect to the holder  10 . 
     The plurality of cassette clamping parts  10 ,  20 , and  30  include the first cassette clamping part  20  and the second cassette clamping part  30  that push the cassette  200  toward the reference position X and the third cassette clamping part  40  that pushes the cassette  200  in a direction different from the direction toward the reference position X when the holder  10  is viewed in plan view. The force with which the first cassette clamping part  20  and the second cassette clamping part  30  push the cassette  200  toward the reference position X is larger than the force with which the third cassette clamping part  40  pushes the cassette  200  in the direction different from the direction toward the reference position X. 
     Among the forces acting on the cassette  200 , which are caused by the plurality of cassette clamping parts  10 ,  20 , and  30 , the force positioning the cassette  200  at the reference position X is larger, so that the cassette  200  can be more reliably positioned at the reference position X. Thus, the cassette  200  can be more accurately positioned with respect to the load port adapter  1 . 
     The cassette clamping parts  20 ,  30 , and  40  include contact parts  21 ,  31 , and  41  that come into contact with the cassette  200 , and drive part  22 ,  32 , and  42  that reciprocate the contact parts  21 ,  31 , and  41 . 
     This can implement the cassette clamping parts  20 ,  30 , and  40  that clamp the cassette  200  to the load port adapter  1  in a state where the cassette  200  is positioned at the reference position X of the load port adapter  1 . 
     The cassette clamping parts  20 ,  30 , and  40  are located between the cassette  200  and the holder  10  in a state where the cassette  200  is held on the holder  10 . 
     As a result, since the cassette clamping parts  20 ,  30 , and  40  are hidden between the cassette  200  and the holder  10  in a state where the cassette  200  is held on the holder  10 , the cassette clamping parts  20 ,  30 , and  40  can be prevented from being exposed. Thus, the safety in the case of supplying the circuit board using the load port  100  can be further improved. 
     The load port adapter  1  further includes the frame  50  configured to cover, in a state where the cassette  200  is clamped to the load port  100  and the load port adapter  1 , a gap between the supply opening  111  of the load port  100  connected to the opening  200   b  of the cassette  200  and the outer periphery of the cassette  200  on the opening  200   b  side. 
     This can prevent an operator from inserting his or her hand, finger, or the like into the gap between the supply opening  111  of the load port  100  and the cassette  200 . Thus, when the cassette  200  is used for the load port  100 , safety can be improved. 
     While at least one embodiment of the present disclosure has been described above, it is merely an example. Thus, the present disclosure is not limited to the at least one embodiment described above, and the at least one embodiment described above may be appropriately modified and implemented without departing from the scope of the present disclosure. 
     In the at least one above embodiment, the plurality of cassette clamping parts include the first cassette clamping part  20 , the second cassette clamping part  30 , and the third cassette clamping part  40 . However, the plurality of cassette clamping parts may include two cassette clamping parts or may include four or more cassette clamping parts. 
     Additionally, the direction in which each cassette clamping part clamps the cassette is not limited to the direction described in the above embodiment. 
     In the at least one above embodiment, the drive parts  22 ,  32 , and  42  of the plurality of cassette clamping parts  20 ,  30 , and  40  reciprocate the contact parts  21 ,  31 , and  41  in different directions. However, the plurality of drive parts may reciprocate at least some of the plurality of contact parts in the same direction. Additionally, the cassette clamping part may clamp the cassette to the load port adapter using a fastening member such as a bolt instead of clamping the cassette to the load port adapter by the drive part pressing the contact part against the protrusion located at the bottom of the cassette. The cassette clamping part may have any configuration as long as the cassette can be clamped in a state of being positioned on the load port adapter. 
     In the above embodiment, the load port adapter  1  includes the four cassette positioning parts  12 . However, the load port adapter may include two or three cassette positioning parts as long as the cassette can be positioned. Additionally, the load port adapter may include five or more cassette positioning parts. 
     In the above embodiment, the load port adapter  1  includes the frame  50 . However, the load port adapter may not include the frame. 
     The present disclosure is applicable to, for example, a load port adapter fixable on a mounting table of a load port. 
     Features of the above-described embodiments and the modifications thereof may be combined appropriately as long as no conflict arises. 
     While embodiments of the present disclosure have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present disclosure. The scope of the present disclosure, therefore, is to be determined solely by the following claims.