1. A tray table assembly for a passenger seat including a seatback and a seat bottom, comprising:
a horizontal rail arranged alongside the passenger seat, the horizontal rail having a length extending from the seatback to a position forward of the seat;
a carriage assembly configured to travel horizontally along the length of the horizontal rail; and
a tray table attached to the carriage assembly, the tray table configured to pivot between a vertical orientation in which the tray table is stowed alongside the seatback and a horizontal orientation in which the tray table is positioned forward of the seatback.
2. The tray table assembly of claim 1, further comprising a second horizontal rail arranged parallel to and continuous with the horizontal rail, the carriage assembly configured to travel simultaneously along both rails.
3. The tray table assembly of claim 1, further comprising a ledge arranged parallel to and vertically below the horizontal rail, the ledge continuous along a portion of the length of the horizontal rail such that the ledge interferes with the carriage assembly to prevent the carriage assembly from lowering until the carriage assembly is forward and clear of the ledge.
4. The tray table assembly of claim 3, further comprising a housing within which the horizontal rail and the ledge are housed.
5. The tray table assembly of claim 1, wherein the carriage assembly includes one of a linear-motion bearing, a rolling element bearing, a roller slide, a plain bearing and a roller for sliding movement along the length of the horizontal rail.
6. The tray table assembly of claim 1, further comprising a support member and a support beam, the support member pivotally attached to the carriage assembly and the support beam, the support beam supporting the tray table in a horizontal cantilevered orientation, and the support beam configured to slide vertically along the carriage assembly such that as the tray table pivots toward horizontal the support beam lowers vertically and pivots to an angle to vertical.
7. The tray table assembly of claim 1, wherein the carriage assembly includes a gas spring arranged to provide a spring force for lifting the tray table for stowing.
8. The tray table assembly of claim 7, wherein the gas spring is sized such that a spring force cancels out force from the tray table’s center of gravity when the tray table is at 45 degrees to horizontal.
9. The tray table assembly of claim 1, further comprising a damper arranged to control tray table rotation during deployment.
10. An aircraft passenger seat, comprising:
a seat including a seat bottom and a seatback; and
a tray table assembly arranged alongside the seat, the tray table assembly comprising a horizontal rail arranged alongside the passenger seat and having a length extending from the seatback to a position forward of the seat, a carriage assembly configured to travel horizontally along the length of the horizontal rail, and a tray table pivotally attached to the carriage assembly configured to pivot between a vertical orientation in which the tray table is stowed alongside the seatback and a horizontal orientation in which the tray table is positioned forward of the seatback.
11. The aircraft passenger seat of claim 10, further comprising a second horizontal rail arranged parallel to and continuous with the first horizontal rail, the carriage assembly configured to travel simultaneously along both rails.
12. The aircraft passenger seat of claim 10, further comprising a ledge arranged parallel to and vertically below the horizontal rail, the ledge continuous along a portion of the length of the horizontal rail such that the ledge interferes with the carriage assembly to prevent the carriage assembly from lowering until the carriage assembly is forward and clear of the ledge.
13. The aircraft passenger seat of claim 10, further comprising a housing positioned alongside the seat within which the horizontal rail and the ledge are housed.
14. The aircraft passenger seat of claim 10, further comprising a support member and a support beam, the support member pivotally attached to the carriage assembly and the support beam, the support beam supporting the tray table in a horizontal cantilevered orientation, and the support beam configured to slide vertically along the carriage assembly such that as the tray table pivots toward horizontal the support beam lowers vertically and pivots to an angle to vertical.
15. The tray table assembly of claim 1, further comprising a gas spring arranged to provide a spring force for lifting the tray table for stowing, and a damper arranged to control tray table rotation during deployment.
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. Process for the preparation of expandable polystyrene comprising the following steps :
-io) heating an aqueous suspension comprising styrene monomer and at least one organic peroxide initiator of formula (I) 1-alkoxy-1-t-alkylperoxycyclohexane in which the alkoxy group contains 1 to 4 carbon atoms, the t-alkyl group contains 4 to 12 carbon atoms, and the cyclohexane ring optionally substituted with 1 to 3 alkyl groups each, independently having 1 to 3 carbon atoms, at a temperature ranging from 100\xb0 C. to 120\xb0 C.,
-iio) adding a blowing agent selected from the group consisting of alkanes having from 4 to 6 carbon atoms and mixtures thereof
2. Process according to claim 1, wherein the at least one organic peroxide initiator is 1-methoxy-1-t-amylperoxycyclohexane (TAPMC).
3. Process according to claim 1, wherein said blowing agent is selected from the group consisting of butane, 2-methylbutane, pentane, cyclohexane and mixtures thereof
4. Process according to claim 1, wherein said blowing agent is pentane.
5. Process according to claim 1, wherein the temperature of step io) ranges from 105\xb0 C. to 115\xb0 C.
6. Process according to claim 1, wherein the aqueous suspension of step io)further comprises at least one second organic peroxide initiator, different from said organic peroxide initiator of formula (I).
7. Process according to claim 6, wherein said second peroxide initiator is selected from the group consisting of compounds having the formula (II), OO-t-alkyl-O-alkyl monoperoxycarbonate, wherein t-alkyl contains from 4 to 12 carbon atoms, and alkyl contains from 3 to 12 carbon atoms, and their mixtures.
8. Process according to claim 1, wherein said organic peroxide initiator of formula (I) is used in the aqueous suspension of step io) in amounts from 4 to 25 milli equivalents of initiator per liter of styrene.
9. Process according to claim 1, wherein the styrene monomer further comprises up to 15 weight %, with respect to the total weight of styrene, of copolymerizable monomers other than styrene monomers.
10. Process according to claim 1, wherein the blowing agent is added in amounts ranging from 5 to 10%, by weight, with respect to the weight of styrene.
11. Process according to claim 1, wherein an additive selected from the group consisting of flame retardant agents, inorganic suspension stabilizers, organic suspension stabilizers, surfactants, chain transfer agents, nucleating agents, expansion aids, lubricants, plasticizers and mixtures thereof, is added to the aqueous suspension at step io) or at step iio).
12. Process according to claim 11, wherein the flame retardant agent is selected from the group consisting of hexabromocyclododecane (HBCD), tetrabromobisphenol A (TBBPA), decabromodiphenyl ether (Deca\u2014BDE), pentabromodiphenyl ether (Penta\u2014BDE), octabromodiphenyl ether (Octa\u2014BDE), tris-(dibromopropyl)phosphate, carbon tetrabromide, beta-dibromopropionate, tetrabromoethylene, 1-2-dibromo-1,1,2,2-tetrachloroethane, 1,1,2,2-tetrabromoethane, dibromodichloroethane, 1,2-dibromo-1,1-dichloroethane, 1,2-dibromo-1,2,2-trichloroethane, 1,2,3,4-tetrabromobutane, 1,2,3-tribromopropane, pentabromoethane, tribromotrichlorocyclohexane, 1,2,4-tribromobutane, tetrabromopentane, hexabromoethane, tetrabromodichlorocyclohexane, pentabromomonochlorocyclohexane, 1,2-di-(dibromomethyl)benzene, alpha,beta-dibromoethylbenzene, alpha,beta-dibromopropionate and mixtures thereof.
13. Process according to claim 12, wherein the flame retardant agent is hexabromocyclododecane.
14. Process according to claim 6, wherein said heating an aqueous suspension of step io) comprises a first stage and a second stages stage, said organic peroxide initiator of formula (I) being the first stage initiator and said at least one additional ether second organic peroxide being the second stage initiator, said suspension being heated at a temperature ranging from 100\xb0 C. to 120\xb0 C. during said first stage, and said suspension being heated at a temperature corresponding to the one hour half life temperature of the at least additional second organic peroxide during the second stage.
15. Process according to claim 1, wherein said blowing agent is added during step io).
16. Process according to claim 14, wherein said blowing agent is added at the end of the first stage of step io).
17. Expandable polystyrene obtainable by a process according to claim 1.
18. Expandable polystyrene according to claim 17, having a molecular weight (Mw) of at least 170, 000 gmol.
19-20. (canceled)
21. Process according to claim 1, wherein said organic peroxide initiator of formula (I) is used in the aqueous suspension of step io) in amounts from 12 to 20 milli equivalents of initiator per liter of styrene.
22. Process according to claim 14 wherein said temperature ranges from 105\xb0 C. to 115\xb0 C.