All The Claims

1. A chair assembly comprising:
a base frame having two mounting bars and each mounting bar having a front end and a rear end;
a pivot frame mounted pivotally on the rear ends of the mounting bars of the base frame and having two pivoting bars mounted pivotally and respectively on the rear ends of the mounting bars;
a backrest frame mounted securely’ on the pivot bars of the pivot frame;
a seat frame mounted on the base frame and the pivot frame; and
a backrest-adjusting device mounted between the base frame and the pivot frame and having
a mounting bracket mounted securely on the mounting bars of the base frame;
a stopper mounted securely on pivoting bars of the pivot frame;
an adjusting bolt having
a connecting end mounted rotatably on the mounting bracket; and
an adjusting end defined opposite to the connecting end;

an adjusting nut screwed movably around the adjusting bolt; and
a torsion spring mounted on the pivot bars of the pivot frame, biasing the pivot frame and the backrest frame to pivot forward and having
at least one abutment end tightly abutting the stopper; and
a regulating end defined opposite to the abutment end and presses against the adjusting nut;
wherein rotating the adjusting bolt moves the adjusting nut along the adjusting bolt and changes a torque of the torsion spring.
2. The chair assembly as claimed in claim 1, wherein the backrest-adjusting device further has a mounting pin mounted securely on the pivot bars of the pivot frame and the torsion spring is mounted around the mounting pin.
3. The chair assembly as claimed in claim 2, wherein
each mounting bar further has a limiting slot defined in the rear end of the mounting bar and having a top inner surface and a bottom inner surface; and
each pivot bar further has a limiting protrusion formed on the front end of the pivot bar, mounted movably in the limiting slot of one of the mounting bars and selectively abutting the top or bottom inner surface of the limiting slot.
4. The chair assembly as claimed in claim 3, wherein the seat frame is capable of pivoting on the base frame and the pivot frame.
5. The chair assembly as claimed in claim 4, wherein the adjusting bolt further has a wheel handle mounted securely on the connecting end.
6. The chair assembly as claimed in claim 5 further comprising a stand mounted on the base frame.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A point of sale network system including a plurality of point sale terminals connected to a system administrator, each of said terminals comprising:
a cash drawer including a drawer identifier;
a microprocessor incorporated into said cash drawer;
data indicative of changes related to each terminal stored in association with said microprocessor;
a device in each drawer, responsive to a switch in the openclose status of the drawer for transmitting the switch in status of said drawer to said system administrator via a status line; and
an implementation in said microprocessor, responsive to said switch in status, for transmitting said data indicative of changes to said system administrator via said status line.
2. The point of sale system of claim 1 wherein said switch indicates the opening of said drawer.
3. The point of sale system of claim 2 wherein said data indicative of changes is an identifier indicating a new till has been inserted into the drawer.
4. The point of sale system of claim 2 wherein said data indicative of changes is an identifier indicating chat the till of a new user has been inserted into the drawer.
5. The point of sale system of claim 3 wherein the stored data is a readable identifier on said new till.
6. The point of sale system of claim 4 wherein the stored data is a readable user identifier element inserted into the till.
7. The point of sale system of claim 2 wherein:
said plurality of terminals are a set of checkout lane terminals at a retail business;
said system administrator is a controller for correlating said transaction data received from said terminal with said drawer and said till identifiers;
each of said cash drawers has a fixed association with a corresponding terminal; and
each of said tills may be switched from cash drawer to cash drawer.
8. A method for transmitting data in a point of sale network system including a plurality of point sale terminals connected to a system administrator comprising:
storing a drawer identifier in association with a cash drawer in each terminal;
storing data indicative of changes related to each terminal stored in association with said cash drawer;
transmitting a switch in the openclose status of each drawer to said system administrator via a status line in response to said switch in status; and
also transmitting said stored data indicative of changes to said system administrator via said status line in response to said switch in status.
9. The method of claim 8 wherein said switch in status indicates the opening of said drawer.
10. The method of claim 9 wherein said data indicative of changes is an identifier indicating a new till has been inserted into the drawer.
11. The method of claim 9 wherein said data indicative of changes is an identifier indicating a new user associated with said drawer.
12. The method of claim 1 wherein:
said plurality of terminals are a set of checkout lane terminals at a retail business;
said system administrator is a controller for correlating said transaction data received from said terminal with said drawer and said till identifiers;
each of said cash drawers has a fixed association with a corresponding terminal; and
each of said tills is enabled to be switched from cash drawer to cash drawer.
13. A point of sale network system including a set of checkout line terminals at a retail business connected to a controller for correlating said transaction data received from said terminals, each of said terminals comprising:
a cash drawer having a fixed association with said terminal, and including a drawer identifier;
a cash till, including a till identifier of till user removably switchable between cash drawers;
apparatus for reading said drawer identifier;
apparatus for reading said till identifier during the engagement of said till with said drawer including:
an element for reading said till identifier of said user; and
a structure in said till adapted to receive said user identifier element in a position such that the user identifier is read by said apparatus for reading said till identifier during the engagement of said till with drawer;

apparatus for transmitting said read drawer and till identifiers to said controller;
a device for sensing the disengagement of said till; and
apparatus for signalling said controller that said till is disengaged from said drawer.
14. The point of sale system of claim 13 wherein said element for reading said till identifier is removably received in said till structure.

1. A humidifying medium comprising a corrugated board and a linerboard coupled to one or both sides of the corrugated board, the corrugated board and the linerboard having different average pore diameters.
2. The humidifying medium of claim 1, wherein the average pore diameter of the linerboard is larger than that of the corrugated board.
3. The humidifying medium of claim 2, wherein the average pore diameter of the linerboard is 3\u02dc6 times larger than that of the corrugated board.
4. The humidifying medium of claim 1, wherein the linerboard or the corrugated board comprises ceramic paper or glass paper.
5. (canceled)
6. The humidifying medium of claim 1, wherein the humidifying medium is wound to have a honeycomb structure.
7. The humidifying medium of claim 1, wherein the humidifying medium is coated with an inorganic material or organic material comprising a disinfectant material or an antibacterial material.
8. (canceled)
9. The humidifying medium of claim 1, wherein the humidifying medium is coated with TiO2 and alumina.
10. A humidifying medium wherein a linerboard having an average pore diameter of 35\u02dc50 \u03bcm is coupled to one or both sides of a corrugated board having an average pore diameter of 8\u02dc10 \u03bcm.
11. The humidifying medium of claim 10, wherein the linerboard or the corrugated board comprises ceramic paper or glass paper.
12. (canceled)
13. The humidifying medium of claim 10, wherein the humidifying medium is wound to have a honeycomb structure.
14. The humidifying medium of claim 10, wherein the humidifying medium is coated with an inorganic material or organic material comprising a disinfectant material or an antibacterial material.
15. (canceled)
16. The humidifying medium of claim 10, wherein the humidifying medium is coated with TiO2 and alumina.
17. A method of manufacturing a humidifying medium, comprising:
preparing a linerboard and a corrugated board having different average pore diameters; and
coupling the linerboard to one or both sides of the corrugated board.
18. The method of claim 17, further comprising: winding the humidifying medium to have a honeycomb structure.
19. The method of claim 17, further comprising: coating the humidifying medium with an inorganic material or organic material comprising a disinfectant material or an antibacterial material.
20. (canceled)
21. The method of claim 17, wherein the manufactured humidifying medium is dipped into slurry that contains 100 parts by weight of water, 5\u02dc15 parts by weight of ethanol, 1\u02dc5 parts by weight of TiO2, and 5\u02dc15 parts by weight of alumina sol containing 10\u02dc30% by weight of solid, followed by drying at 100\u02dc150\xb0 C.
22-24. (canceled)

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A liquid crystal alignment solution, comprising at least one polymer selected from the group consisting of a polyamide acid-polyamide acid polymer represented by formula (A), a polyimide-polyamide acid polymer represented by formula (B) and a polyimide-polyimide polymer represented by formula (C),
wherein
T1 and T2 are each independently a tetravalent organic group;
m<n;
p<q;
r<s;
D1 and D2 are selected from the group consisting of formula (3)-(6) as a first group and formulae (9)-(11) and (15) as a second group, wherein D1 and D2 are selected from different groups,
in the formulae (3) and (4),
R1, R2, R3, and R4 are each independently a monovalent organic group, a halogen atom or a hydrogen atom;
X is \u2014O\u2014, \u2014SO\u2014 or \u2014SO2\u2014; Y is a divalent organic group, and Y is diphenyl when X is \u2014O\u2014;
a and b are each independently an integer from 0 to 4; and
c and d are each independently an integer from 0 to 3;
in the formulae (5) and (6),
R1, R2, R3, R4, R5 and R6 are each independently a monovalent organic group, a halogen atom or a hydrogen atom;
X is \u2014O\u2014, \u2014S\u2014, \u2014SO\u2014, \u2014SO2\u2014 or \u2014CO\u2014;
Z is a divalent organic group, \u2014O\u2014, \u2014S\u2014, \u2014SO\u2014, \u2014SO2\u2014 or \u2014CO\u2014, and Z is benzene ring when X is \u2014O\u2014, Z is not \u2014S\u2014 when X is \u2014S\u2014;
a, b, e and f are each independently an integer from 0 to 4; and
c and d are each independently an integer from 0 to 3;
in the formulae (9)-(11) and (15),
R7 is a monovalent C4-40 alicyclic group or a monovalent C8-20 aliphatic group;
R8, R11, R12, R13, R14 and R15 are each independently a halogen atom or a monovalent organic group;
R9 is a divalent C4-40 alicyclic group;
X\u2032 and Y\u2032 are each independently a divalent group selected from the group consisting of \u2014O\u2014, \u2014NH\u2014, \u2014S\u2014, \u2014CO\u2014, \u2014COO\u2014, \u2014NHCO\u2014 and \u2014CONH\u2014;
A is a divalent group selected from the group consisting of \u2014O\u2014, \u2014NH\u2014, \u2014S\u2014, \u2014CO\u2014, \u2014COO\u2014, \u2014OCO\u2014, \u2014NHCO\u2014 and \u2014CONH\u2014; and
a\u2032 and b\u2032 are each independently an integer larger than or equal to 1.
2. The liquid crystal alignment solution according to claim 1, wherein p is larger than or equal to 0.2.
3. The liquid crystal alignment solution according to claim 1, wherein D1 is selected from one of a first group consisting of formulae (3) to (6) and a second group consisting of formulae (9)-(11) and (15), and D2 is selected from the other of the first group and the second group.
4. The liquid crystal alignment solution according to claim 1, further comprising an organic solvent.
5. The liquid crystal alignment solution according to claim 4, wherein the organic solvent comprises N-methyl-2-pyrrolidone, N,N-dimethylformamide, N,N-dimethyl acetamide, N-Methylcaprolactam, dimethyl sulfoxide, \u03b3-butyrolactone, \u03b3-butyrolactam, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol n-propyl ether and ethylene glycol monobutyl ether and a combination thereof.
6. The liquid crystal alignment solution according to claim 1, further comprising an organic siloxane compound.
7. The liquid crystal alignment solution according to claim 6, wherein the organic siloxane compound comprises aminopropyl-trimethoxy-silane, aminopropyl-triethoxy-silane, vinyl-methyl-silane, N-(2-aminoethyl)-3-aminopropyl-methyl-dimethoxy-silane, N-(2-aminoethyl)-3-aminopropyl-trimethoxy-silane, vinyl-triethoxy-silane, 3-methacryloxy-propyl-trimethoxy-silane, 3-epoxypropoxy-propyl-trimethoxy-silane, 3-epoxypropoxy-propyl-methyl-dimethoxy-silane, 2-(3,4-epoxycyclohexyl)-ethyl-trimethoxy-silane, 3-ureido-propyl-trimethoxy-silane, 3-ureido-propyl-triethoxy-silane, N-ethoxycarbonyl-3-aminopropyl-trimethoxysilane, N-ethoxycarbonyl-3-aminopropyl-triethoxysilane, N-triethoxysilylpropyl-triethylene-triamine, N-trimethoxysilylpropyl-triethylene-triamine, N-bis(oxyethylene)-3-aminopropyl-trimethoxy-silane, N-bis(oxyethylene)-3-aminopropyl-triethyl-silane, and a combination thereof.
8. The liquid crystal alignment solution according to claim 1, further comprising an epoxy compound.
9. The liquid crystal alignment solution according to claim 8, wherein the epoxy compound comprises ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, glycerine diglycidyl ether, 2,2-dibromoneopentyl glycol diglycidyl ether, N,N,N\u2032,N\u2032-tetraglycidyl-meta-xylene, 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane, N,N,N\u2032,N\u2032-tetraglycidyl-4,4\u2032-diaminodiphenylmethane, 3-(N-propenyl-N-glycidyl)aminopropyl-trimethoxysilane, 3-(N,N-diglycidyl)aminobutyl-trimethoxysilane, and a combination thereof.
10. The liquid crystal alignment solution according to claim 1, wherein the liquid crystal alignment solution comprises a mixture of two polymers selected from the groups of the polyamide acid-polyamide acid polymer represented by formula (A), the polyimide-polyamide acid polymer represented by formula (B) and the polyimide-polyimide polymer represented by formula (C).
11. A liquid crystal alignment solution, comprising a mixture of two polymers selected from the group consisting of a polyamide acid-polyamide acid polymer represented by formula (A), a polyimide-polyamide acid polymer represented by formula (B) and a polyimide-polyimide polymer represented by formula (C),
(A)
wherein
T1 and T2 are each independently a tetravalent organic group;
m<n;
p<q;
r<s;
D1 and D2 are selected from the group consisting of formula (3)-(6) as a first group and formulae (9)-(11) and (15) as a second group, wherein D1 and D2 are selected from different groups,
in the formulae (3) and (4),
R1, R2, R3, and R4 are each independently a monovalent organic group, a halogen atom or a hydrogen atom;
X is \u2014O\u2014, \u2014SO\u2014 or \u2014SO2\u2014; Y is a divalent organic group, and Y is diphenyl when X is \u2014O\u2014;
a and b are each independently an integer from 0 to 4; and
c and d are each independently an integer from 0 to 3;
in the formulae (5) and (6),
R1, R2, R3, R4, R5 and R6 are each independently a monovalent organic group, a halogen atom or a hydrogen atom;
X is \u2014O\u2014, \u2014S\u2014, \u2014SO\u2014, \u2014SO2\u2014 or \u2014CO\u2014;
Z is a divalent organic group, \u2014O\u2014, \u2014S\u2014, \u2014SO\u2014, \u2014SO2\u2014 or \u2014CO\u2014, and Z is benzene ring when X is \u2014O\u2014, Z is not \u2014S\u2014 when X is \u2014S\u2014;
a, b, e and f are each independently an integer from 0 to 4; and
c and d are each independently an integer from 0 to 3;
in the formulae (9)-(11) and (15),
R7 is a monovalent C4-40 alicyclic group or a monovalent C8-20 aliphatic group;
R8, R11, R12, R13, R14 and R15 are each independently a halogen atom or a monovalent organic group;
R9 is a divalent C4-40 alicyclic group;
X\u2032 and Y\u2032 are each independently a divalent group selected from the group consisting of \u2014O\u2014, \u2014NH\u2014, \u2014S\u2014, \u2014CO\u2014, \u2014COO\u2014, \u2014OCO\u2014, \u2014NHCO\u2014 and \u2014CONH\u2014;
A is a divalent group selected from the group consisting of \u2014O\u2014, \u2014NH\u2014, \u2014S\u2014, \u2014CO\u2014, \u2014COO\u2014, \u2014OCO\u2014, \u2014NHCO\u2014 and \u2014CONH\u2014; and
a\u2032 and b\u2032 are each independently an integer larger than or equal to 1,
wherein at least one of D1 and D2 in one of the two polymers is selected from the group consisting of above formulae (3)-(6), and at least one of D1 and D2 in another of the two polymers is selected from the group consisting of formulae (9)-(11) and (15) and formulae (7), (8), (12), (13), and (14),
in the formulae (7)-(8) and (12)-(14),
R7 is a monovalent C4-40 alicyclic group or a monovalent C8-20 aliphatic group;
R8 is a halogen atom or a monovalent organic group;
R9 and R10 are each independently a divalent C4-40 alicyclic group;
X\u2032 and Y\u2032 are each independently a divalent group selected from the group consisting of \u2014O\u2014, \u2014NH\u2014, \u2014S\u2014, \u2014CO\u2014, \u2014COO\u2014, \u2014OCO\u2014, \u2014NHCO\u2014 and \u2014CONH\u2014; and
Z\u2032 is a monovalent group selected from the group consisting of \u2014CF3, \u2014CN, COCH3, \u2014COOH, \u2014NO2, SOCH3, \u2014SO2CH3, \u2014OCF3, \u2014F and \u2014Cl.