Source: https://insight.rpxcorp.com/pat/US6345839B1
Timestamp: 2019-08-25 16:13:30
Document Index: 414756754

Matched Legal Cases: ['art 1', 'art 2', 'art 1', 'art 2', 'art 3', 'art 1', 'art 2', 'art 1', 'art 2', 'art 1', 'art 2', 'art 1', 'art 31', 'art 31', 'art 31', 'art 51', 'art 51', 'art 51', 'art 51', 'art 51', 'art 61']

Patent US 6,345,839 B1
Safety system for seat belt securement
US 20090082926A1
Klein Larry W.
US 20070144273A1
US 7,135,645 B2
US 20040226756A1
US 20140297132A1
US 9,073,505 B2
US 20170232868A1
US 10,118,514 B2
US 20180321095A1
<FGREF>FIG. 1</FGREF> is a partially sectional perspective view showing a vehicle seat with a seating sensor in first and second embodiments according to the present invention;
<FGREF>FIG. 2</FGREF> is a plan view of the seating sensor;
<FGREF>FIG. 3</FGREF> is a cross-sectional view showing an internal construction of a pressure sensitive section of the seating sensor;
<FGREF>FIGS. 4A and 4B</FGREF> are graphic illustrations of visual representation which are displayed as a result of an image processing of values and positions of pressures, FIG. 4(A) showing an example of the image processing of values and positions of pressures detected by the seating sensor of a seat cushion part and FIG. 4(B) showing an example of the image processing of values and positions of pressures detected by the seating sensor of a seat back part;
<FGREF>FIG. 5</FGREF> is a partially sectional perspective view of the seat with a seating sensor in a third embodiment according to the present invention, which is illustrated in a disassembled state;
<FGREF>FIG. 6</FGREF> is a vertical sectional view of the seat with a seating sensor in the third embodiment according to the present invention;
<FGREF>FIG. 7</FGREF> is a side elevational view showing an arrangement of a seating detection device in a fourth embodiment according to the present invention;
<FGREF>FIG. 8</FGREF> is a plan view of a pressure sensitive sensor which can be used as a hip sensor and a foot sensor;
<FGREF>FIG. 9</FGREF> is a side elevational view showing a condition in that a child, whose feet do not reach a vehicle floor, is seated on a vehicle seat provided with the seating detection device of the fourth embodiment;
<FGREF>FIG. 10</FGREF> is a side elevational view showing a condition in that a child, whose feet can reach the vehicle floor, is seated on the seat provided with the seating detection device of the fourth embodiment;
<FGREF>FIG. 11</FGREF> is a side elevational view showing a condition in that a child seat, on which an infant is seated, is placed on the seat provided with the seating detection device of the fourth embodiment;
<FGREF>FIG. 12</FGREF> is a side elevational view showing a condition in that a child seat, which is oriented in a direction opposite to that in FIG. 11, is placed on the seat provided with the seating detection device of the fourth embodiment;
<FGREF>FIG. 13</FGREF> is a side elevational view showing a condition in that an object is placed on the seat provided with the seating detection device of the fourth embodiment;
<FGREF>FIG. 14</FGREF> is a graphical representation showing variations of output signals of the sensor in relation to variations of body weight of a person on the seat;
<FGREF>FIG. 15</FGREF> is a side elevational view schematically showing the seating detection device of a fifth embodiment according to the present invention;
<FGREF>FIG. 16</FGREF> is a plan view schematically showing a pressure sensitive section of the seating detection device of the fifth embodiment;
<FGREF>FIGS. 17</FGREF>a, 17b and 17c include diagrams, each illustrating a variation with time in a condition that an occupant is normally seated on the seat cushion part provided with the seating detection device of the fifth embodiment, wherein FIG. 17(a) shows a variation of loads imposed on an upper surface of the seat, FIG. 17(b) shows a variation on coordinates of the center of gravity, and FIG. 17(c) shows a variation on the number of the pressed sensors;
<FGREF>FIGS. 18</FGREF>a, 18b and 18c include diagrams, each illustrating a variation with time in a condition that a baggage is seated on the seat cushion part provided with the seating detection device of the fifth embodiment, wherein FIG. 18(a) shows a variation of loads imposed on the upper surface of the seat, FIG. 18(b) shows a variation on coordinates of the center of gravity, and FIG. 18(c) shows a variation on the number of the pressed sensors;
<FGREF>FIGS. 19</FGREF>a, 19b and 19c include diagrams, each illustrating a variation with time in a condition that an occupant is slowly seated on the seat cushion part provided with the seating detection device of the fifth embodiment, wherein FIG. 19(a) shows a variation of loads imposed on the upper surface of the seat, FIG. 19(b) shows a variation on coordinates of the center of gravity, and FIG. 18(c) shows a variation on the number of the pressed sensors;
<FGREF>FIG. 20</FGREF> is a pressure distribution chart depicted in a three dimensional manner, which is taken in a condition that an infant is seated on the seat cushion part provided with the seating detection device of the fifth embodiment;
<FGREF>FIG. 21</FGREF> is a pressure distribution chart depicted in a three dimensional manner, which is taken in a condition that a child is seated on the seat cushion part provided with the seating detection device of the fifth embodiment;
<FGREF>FIG. 22</FGREF> is a pressure distribution chart depicted in a three dimensional manner, which is taken in a condition that an adult is seated on the seat cushion part provided with the seating detection device of the fifth embodiment;
<FGREF>FIG. 23</FGREF> is a schematic diagram illustrating an arrangement of an air bag apparatus of a sixth embodiment according to the present invention;
<FGREF>FIG. 24</FGREF> is a schematic plan view of the pressure sensitive sensor constituting the air bag apparatus of the sixth embodiment;
<FGREF>FIG. 25</FGREF> is a cross-sectional view of the pressure sensitive sensor constituting the air bag apparatus of the sixth embodiment;
<FGREF>FIG. 26</FGREF> is an explanatory diagram showing a pressure distribution of a bench part of the seat in a three-dimensional manner;
<FGREF>FIG. 27</FGREF> is a graphic representation showing the relationship between a spaced distance of pressure peaks and a body height;
<FGREF>FIG. 28</FGREF> is a graphic representation showing the relationship between a load imposed on the sensor element (total amount of output signals of a seated surface sensor) and a body weight.
<FGREF>FIG. 1</FGREF> is a partially sectional perspective view showing a vehicle seat with a seating sensor in a first embodiment according to the present invention. As shown in <FGREF>FIG. 1</FGREF>, the seat with a seating sensor A is used for a seat in a vehicle, such as an automobile vehicle. A vehicle seat includes a seat cushion part 1 and a seat back part 2 pivotally mounted on the seat cushion part 1. The seat back part 2 is provided at an upper portion thereof with a head rest part 3.
<FGREF>FIG. 2</FGREF> is a plan view of the seating sensor and <FGREF>FIG. 3</FGREF> is a cross-sectional view showing an internal construction of a pressure sensitive section of the seating sensor.
As shown in <FGREF>FIGS. 2 and 3</FGREF>, the seating sensors 4,5 are generally formed in a trapezoidal formation having dimensions of approximately 35 cm in length and 30 cm in width. The seating sensor 4,5 comprise transparent polyethylene-terephthalate (PET) films 10,11 extending in parallel on upper and lower sides thereof, seven electrodes 12 arranged in a direction of rows and printed on the upper PET film 10, five electrodes 13 arranged in a direction of lines and printed on the lower PET film 11, and thirty-five pressure sensitive sections 14 which are positioned at respective intersections of the electrodes 12,13 and which are arranged in a row of seven elements and in a line of five elements. In the present embodiment, the number of electrodes is set to be twelve. The total number of electrodes is preferably limited to be no greater than twenty, taking the electrode number of the joint connectors into consideration.
As shown in <FGREF>FIG. 3</FGREF>, each of pressure sensitive sections 14 comprises a pressure sensitive ink 15 applied or printed on the row electrode 12 which is printed on the upper PET film 10, and a pressure sensitive ink 16 applied or printed on the line electrode 13 which is printed on the lower PET film 11. A substance is adopted as the pressure sensitive ink 15,16, which indicates a high electric resistance ( nonconductivity ) under a condition in that no pressure is imposed thereon, whereas the electric resistance varies in response to the increased pressure as it is pressurized, and which contains conductive particles or semi-conductive particles. Since the surfaces of the pressure sensitive ink 15,16 has irregularity, a cavity 17 of a constant distance is provided therebetween, so that mutual adhesion thereof is prevented from occurring.
<FGREF>FIGS. 4A-C</FGREF> are a graphic illustration of a visual representation which is displayed as a result of an image processing of values and positions of pressures, FIG. 4(A) showing an example of the image processing of values and positions of pressures detected by the seating sensor 4 of a seat cushion part 1 and FIG. 4(B) showing an example of the image processing of values and positions of pressures detected by the seating sensor 5 of a seat back part 2. In <FGREF>FIG. 4</FGREF>, numerals shown on its lower and right sides are coordinate values for indicating the positions of the pressure sensitive sections 14 of the seating sensor 4 (5), wherein modules corresponding to the regions of the seating sensor 4(5) are presented in representations of hexagonal formations H. Further, colored indications are made in a form of contour line representation in accordance with pressure values.
A third embodiment of the seat with sensing sensor according to the present invention is described hereinafter. <FGREF>FIG. 5</FGREF> is a partially sectional perspective view of the seat with seating sensor in the third embodiment according to the present invention, and <FGREF>FIG. 6</FGREF> is a vertical sectional view of the seat with seating sensor therein.
As shown in <FGREF>FIGS. 5 and 6</FGREF>, surface portions 1a, 2a of the seat cushion part 1 and the seat back part 2 are made of fabric or cloth in the third embodiment of the seat with seating sensor according to the present invention. Pads 20, 21 for shaping the general profile are contained in the seat cushion part 1 and the seat back part 2. The seating sensor 4 is interposed between the surface portion 1a and the pad 20 of the seat cushion part 1, and the seating sensor 5 is interposed between the surface 2a and the pad 21 of the seat back 2.
Each of the pads 20, 21 is provided with protrusions 20a, 21a in positions corresponding to the respective pressure sensitive sections 14 of the seating sensors 4,5. The protrusions 20a, 21a are configured in a form of semi-sphere or semi-cylindrical form, which has a height to the extent that the occupant on the seat does not feel an uncomfortable impression therefrom. The protrusions 20a, 21a may be integrally formed on the pads 20, 21 or made from elastic materials adhered to the pads 20, 21.
According to the third embodiment of the seat with seating sensor, the protrusions 20a, 21a in contact with the pressure sensitive sections 14 of the sensors 4,5 are provided on the surfaces of the pads 20, 21 so that the pressing force transmitted to the pressure sensitive section 14 upon pressed is enhanced, and therefore, the pressure transmitted from the occupant is surely sensed even if the pressure is weak. Thus, the height and weight of the occupant can be correctly detected without increasing the number of the pressure sensitive sections 14.
A seating detection device of a fourth embodiment according to the present invention is described with reference to <FGREF>FIG. 7</FGREF>, which is a side elevational view of the seating detection device of the fourth embodiment. As shown in <FGREF>FIG. 7</FGREF>, the seating detection device according to the present invention comprises a hip sensor 32 attached to the bench part 31a of a vehicle seat 31, a foot sensor 34 located on a floor portion 33 forward of the seat 31, and subject determination means 35 for recognizing the subject T on the basis of the pressure detected by the hip sensor 32 and the foot sensor 34.
The hip sensor 32 is interposed between a surface portion of the bench part 31a and a pad (not shown) contained in the bench part 31a, and the foot sensor 34 is positioned beneath a carpet placed on the floor 33.
<FGREF>FIG. 8</FGREF> is a plan view showing the pressure sensitive sensor used as the hip sensor 32 and the foot sensor 34. As illustrated on <FGREF>FIG. 8</FGREF>, this pressure sensitive sensor 40 comprises transversely extending row electrodes 41, longitudinally extending line electrodes 42, and pressure sensitive sections 43 located at intersections of the row and line electrodes 41, 42. The row and line electrodes 41, 42 are printed on transparent PET films or the like, respectively. The pressure sensitive section 43 is made of a material which is variable in its electric resistance in response to the applied pressure value, so that the pressure value can be detected, based on the change of the electric resistance value.
A procedure of determining the seated subject T with use of the seating detection apparatus according to the present invention is described hereinafter. In general, a foot is completely placed on the foot sensor 34 as shown in <FGREF>FIG. 7</FGREF>, if the subject T is an adult (the weight is heavier than or equal to 30 kg). If the subject T is a child (lighter than 30 kg), the foot does not reach the foot sensor 34 as shown in <FGREF>FIG. 9</FGREF>; otherwise, the foot is merely in slight contact with the foot sensor 34 as shown in <FGREF>FIG. 10</FGREF> even though the child's foot reaches the foot sensor 34. In a case where the subject T is a child seat, nothing is in contact with the foot sensor 34 as shown in <FGREF>FIGS. 11 and 12</FGREF>, regardless of the direction of the child seat T and that of the infant C. Further, only the child seat T may be in contact with the hip sensor 32, and the infant C is not in contact therewith. Still further, if the subject T is a baggage, the baggage T is not in contact with the foot sensor 34, although the baggage T is in contact with the hip sensor 32, as shown in FIG. 13.
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><thead><row><entry></entry><entry>TABLE 1</entry></row></thead><tbody><row><entry></entry><entry></entry></row><row><entry></entry><entry>Subject</entry></row></tbody></tgroup><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><tbody><row><entry></entry><entry></entry><entry>Adult</entry><entry>Child</entry><entry>Object</entry></row><row><entry></entry><entry>Sensor</entry><entry>(≧30 kg)</entry><entry>(<30 kg)</entry><entry>(Childseat)</entry></row><row><entry></entry><entry></entry></row><row><entry></entry><entry>Hip sensor</entry><entry>Middle-High</entry><entry>Middle</entry><entry>Low</entry></row><row><entry></entry><entry>Foot sensor</entry><entry>Middle-High</entry><entry>Zero-Low</entry><entry>Zero</entry></row><row><entry></entry><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><thead><row><entry>TABLE 2</entry></row><row><entry></entry></row><row><entry>Output</entry><entry>Output</entry><entry></entry></row><row><entry>(Hip sensor)</entry><entry>(Foot sensor)</entry><entry>Recognition</entry></row><row><entry></entry></row></thead><tbody><row><entry>Middle-High</entry><entry>Middle-High</entry><entry>Adult</entry></row><row><entry></entry><entry></entry><entry>(≧30 kg)</entry></row><row><entry>Middle</entry><entry>Zero-Low</entry><entry>Child</entry></row><row><entry></entry><entry></entry><entry>(<30 kg)</entry></row><row><entry>Low</entry><entry>Zero</entry><entry>Object</entry></row><row><entry>Zero</entry><entry>Zero</entry><entry>Absence</entry></row><row><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><thead><row><entry>TABLE 3</entry></row><row><entry></entry></row><row><entry>Condition</entry><entry>Human/Object</entry><entry>weight</entry><entry>Height</entry><entry>weight</entry></row><row><entry></entry></row></thead><tbody><row><entry>1</entry><entry>Adult</entry><entry>45 kg</entry><entry>1.54 m</entry><entry>—</entry></row><row><entry>2</entry><entry>Child</entry><entry>30 kg</entry><entry>1.37 m</entry><entry>—</entry></row><row><entry>3</entry><entry>Childseat</entry><entry>—</entry><entry>—</entry><entry>9.6 kg +</entry></row><row><entry></entry><entry></entry><entry></entry><entry></entry><entry>Weight of 10 kg</entry></row><row><entry>4</entry><entry>Child</entry><entry>15 kg</entry><entry> 1 m</entry><entry>—</entry></row><row><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><thead><row><entry>TABLE 4</entry></row><row><entry></entry></row><row><entry></entry><entry>Output</entry><entry>Output</entry></row><row><entry>Condition</entry><entry>(Hip sensor)</entry><entry>(Foot sensor)</entry></row><row><entry></entry></row></thead><tbody><row><entry>1</entry><entry>High</entry><entry>Low-High</entry></row><row><entry>2</entry><entry>Middle-High</entry><entry>Zero</entry></row><row><entry>3</entry><entry>Low-Middle</entry><entry>Zero</entry></row><row><entry>4</entry><entry>Low-Middle</entry><entry>Zero</entry></row><row><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
<FGREF>FIG. 14</FGREF> is a graphic diagram showing relationship between the weight of an occupant on the seat and the intensity of an output signal of the hip sensor 32. As seen from <FGREF>FIG. 14</FGREF>, the intensity of the output signals of the hip sensor 32 increases in proportion with the weight of the occupant on the seat.
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><thead><row><entry></entry><entry>TABLE 5</entry></row><row><entry></entry><entry></entry></row><row><entry></entry><entry>Total</entry><entry></entry><entry></entry><entry>Output (Sensor)</entry></row><row><entry></entry><entry>Weight</entry><entry>weight</entry><entry>Height</entry><entry>(optional unit)</entry></row><row><entry></entry><entry></entry></row></thead><tbody><row><entry></entry></row></tbody></tgroup><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><tbody><row><entry>Childseat +</entry><entry>22.4 kg</entry><entry>—</entry><entry>—</entry><entry>4220</entry></row><row><entry>Weight</entry></row><row><entry>Child</entry><entry>—</entry><entry>22.7 kg</entry><entry>1.17 m</entry><entry>5460</entry></row><row><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
According to the present invention, the hip sensor 32 attached to the seat 31a of the vehicle seat 31, the foot sensor 34 attached to the floor 33 forward of the vehicle seat 31, and the subject determination means 35 for determining the subject T on the basis of the pressures detected by the hip and foot sensors 32, 34 are provided, so that an ensured determination can be made as to whether the subject T on the vehicle seat is a human or an object, and whether the human is an adult or a child.
A seating detection device of a fifth embodiment according to the present invention is described with reference to <FGREF>FIGS. 15 and 16</FGREF>, <FGREF>FIG. 15</FGREF> being a side elevational view schematically showing the seating detection device of the fifth embodiment and <FGREF>FIG. 16</FGREF> being a plan view schematically showing a pressure sensitive section of the seating detection device of the fifth embodiment.
As shown in <FGREF>FIG. 15</FGREF>, the seating detection device is provided with a pressure sensitive sensor 52 located at least on a seat cushion part 51a of the automotive vehicle seat for sensing the pressure of the subject T on the seat, and subject determination means 53 for determining what the subject T is, based variation with time on the pressures sensed by the pressure sensitive sensor 52.
The pressure sensitive sensor 52 is interposed between the surface fabric of the seat cushion part 51a and a urethane foam therein. As illustrated on <FGREF>FIG. 16</FGREF>, the pressure sensitive sensor 52 has a number of sensing elements 55 carried on a pair of elastic members 52a which are shaped in a comb-like form, respectively and oppositely arranged. The sensing elements 55 are spaced apart an equal distance from each other in a formation of a two-dimensional matrix. In response to the physical figures of the occupant on the seat cushion part 51a, or the size and weight of the baggage placed thereon, pressures are applied on the sensing elements 55 arranged in a matrix formation. Each of the sensing elements 55, e.g., made of a material variable in its electric resistance in response to a magnitude of the pressure, detects the pressure in accord with the variation of the electric resistance.
The pressure sensitive sensor 52 may be provided in the seat back part 51b functioning as a backing support, as well as the seat cushion part 51a.
Further, as shown in <FGREF>FIG. 15</FGREF>, a seat belt fastening motion detector 60 for detecting a fastening motion of the seat belt by the occupant may be provided to confirm occupant's use of the seat belt, and the detection device 60 may be connected with the subject determination means 53, whereby determination on the presence or absence of occupant can be more accurately practiced. Still further, the seat position adjusting motion detector 61 for detecting an occupant's motion adjusting the seat position may be provided to be connected with the subject determination means 53, whereby determination on the presence or absence of occupant can be more precisely performed.
<FGREF>FIG. 17</FGREF> shows a case where an occupant is normally seated on the seat cushion part provided with the seating detection device of the present invention. As shown in <FGREF>FIG. 17</FGREF>, variations with time appear, as regards the load on the seated surface, coordinate values of the center of gravity and the number of the pressed sensors, respectively. Therefore, if the load on the seated surface, coordinate values of the center of gravity and the number of the pressed sensor vary with time, the subject can be recognized to be a human.
<FGREF>FIG. 18</FGREF> shows a case where a baggage is placed on the seat cushion part provided with the seating detection device of the present invention. As shown in <FGREF>FIG. 18</FGREF>, all of the load on the seated surface, coordinate values of the center of gravity and the number of the pressed sensors are substantially constant since the beginning of the measuring procedure. In particular, the center of the gravity is entirely stationary. Therefore, if all of the load on the seated surface, positions of the center of gravity and the number of the pressed sensors are substantially constant, the subject can be recognized as being an object.
<FGREF>FIG. 19</FGREF> shows a case where an occupant is slowly seated on the seat cushion part provided with the seating detection device of the present invention. As shown in <FGREF>FIG. 19</FGREF>, slight variations with time appear immediately after the beginning of measuring procedure, as regards all of the load on the seated surface, coordinate values of the center of gravity and the number of the pressed sensors, and thereafter, they are kept substantially constant. However, the coordinate values of the center of gravity apparently vary. Therefore, measurement of variation with respect to the coordinate values of the center of gravity enables determination as to whether the subject is a human, even if the occupant is slowly seated on the seat.
An air bag apparatus according to the sixth embodiment of the present invention is described hereinafter. As shown in <FGREF>FIG. 23</FGREF>, the air bag apparatus of the present invention comprises a sensing device 62 provided within a bench part 61 of a seat and control means 64 for controlling the operation of the air bag 63, such as practice of inflation action, and inflation force, speed and direction of the air bag 63.
The pressure sensitive sensor 65 is positioned slightly below the surface of the bench portion 61. As is illustrated in <FGREF>FIGS. 24 and 25</FGREF>, the pressure sensitive sensor 65 comprises plastic films 70, 71, line electrodes 72 printed on the upper plastic film, row electrodes 73 printed on the lower plastic film and a sensor elements 74 which are located at the intersection of the line and row electrodes 72,73.
<FGREF>FIG. 27</FGREF> is a graph showing the relationship between the height and the distance of the peak points in the pressure distribution of the sensing device 62. It can be understood from <FGREF>FIG. 27</FGREF> that, as interrelationships exist between the height and the distance of the peak points in the pressure distribution, the height can be obtained from the distance between the peak points in the pressure distribution. The differences between the height determined by means of a regression analysis expression prepared from the presently obtained data and the height actually measured by a height meter fell under a range of ±20 cm. Thus, a classification according to the height is made in such a manner as high, middle and low classes, so that it can be determined, under what class the occupant falls.
<FGREF>FIG. 28</FGREF> is a graphic representation showing the relationship between a load imposed on the sensor element (total amount of output signals of the sensor) and a body weight. As seen from <FGREF>FIG. 28</FGREF>, it can be also understood that, as interrelationships exist between the weight of occupant T and the load acting on the sensor elements 74, the weight is obtainable from the load acting on the sensor elements 74. If the angle of the back rest 69 is constant, the load on the bench portion 61 is in proportion with the weight. The gradient of the weight with respect to the total amount of output signals of the sensor changes in an order of approximately 50 kg weight. This is considered to be resulted from the fact that an adult of a weight greater than the order of 50 kg weight has generally the hip width on the seat which is wider than the area having the sensors disposed, and therefore, that the ratio of undetectable load, which the sensors cannot detect, is increased. The functional coefficient are obtained from the data of occupants of adults and children who are not heavier than 50 kg weight, and results indicates R=0.81. This means a substantially direct interrelationship therebetween. The differences between the weight thus determined and the weight measured by a weight meter were no greater than ±7 kg.
<TABLE-US><TABLE-CALS><table><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><thead><row><entry></entry><entry>TABLE 6</entry></row><row><entry></entry><entry></entry></row><row><entry></entry><entry></entry><entry></entry><entry></entry><entry>The back</entry></row><row><entry></entry><entry></entry><entry>The back</entry><entry>The back rest</entry><entry>rest is</entry></row><row><entry></entry><entry></entry><entry>rest is</entry><entry>is inclined for</entry><entry>inclined</entry></row><row><entry></entry><entry>unit</entry><entry>raised fully.</entry><entry>two stages.</entry><entry>fully.</entry></row><row><entry></entry><entry></entry></row></thead><tbody><row><entry></entry></row></tbody></tgroup><tgroup><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><colspec></colspec><tbody><row><entry>Value of load</entry><entry>optional</entry><entry>15100</entry><entry>13200</entry><entry>8800</entry></row><row><entry></entry><entry>unit</entry></row><row><entry>Value of distances</entry><entry>cm</entry><entry>15.0</entry><entry>14.5</entry><entry>14.2</entry></row><row><entry>between peakpoints</entry></row><row><entry></entry></row></tbody></tgroup></table></TABLE-CALS></TABLE-US>
Kondo, Kenji, Nishimoto, Takuya, Kuboki, Naobumi, Arima, Yasuhiro, Miyahara, Masato, Takewaki, Hirokazu
280/734, 280/735, 738/620.46, 738/620.42, 738/621.95, 738/626.32, 738/626.37