1. A keypad module for a portable communication device including a plurality of keys and housing having a left side, a right side, a front side, the keypad comprising:
a. a keypad inlay having a left side and a right side;
b. means for securing the keypad inlay to the front side of the housing; and
c. means for releasing the keypad inlay from the housing;
d. wherein the means for releasing the keypad inlay enables the keypad inlay to be removed from the housing by simultaneously depressing at least two of the plurality of keys and each of the at least two of the plurality of keys actuates an electronic switch when depressed.
2. The keypad module of claim 1, wherein the means for securing the keypad inlay to front side of the housing comprises a first latch that engages a first catch.
3. The keypad module of claim 2, wherein the means for releasing the keypad inlay from the housing comprises disengaging the first latch from the first catch by depressing a first key of the plurality of keys.
4. The keypad module of claim 3, wherein the means for securing the keypad inlay to front side of the housing comprises a second latch that engages a second catch.
5. The keypad module of claim 4, wherein the means for releasing the keypad inlay from the housing comprises disengaging the second latch from the second catch by depressing a second key of the plurality of keys.
6. The keypad module of claim 5, wherein the first key comprises a send key and the second key comprises an end key.
7. The keypad module of claim 5, wherein the first and second latches are located on the keypad inlay and the first and second catches are located on the housing.
8. The keypad module of claim 1, wherein the at least two of the plurality of keys comprises a left side button located on either the left side of the housing or the left side of the keypad inlay and a right side button on either the right side of the housing or right side of the keypad inlay and the means for releasing the keypad inlay from the housing comprises simultaneously depressing the left and right side buttons.
9. The keypad module of claim 8, wherein the means for releasing the keypad inlay from the housing comprises simultaneously depressing the left and right side buttons using an off-center keystroke on both the left and right side buttons, and wherein a non-off-center keystroke on either or both of the left and right side buttons will not release the keypad inlay when the left and side buttons are simultaneously depressed.
10. The keypad module of claim 8, wherein the means for securing the keypad inlay to the housing comprises a first arm that engages a first catch and a second arm that engages a second catch.
11. The keypad module of claim 10, wherein the means for releasing the keypad inlay from the housing comprises disengaging the first arm from the first catch by depressing the left side key and disengaging the second arm from the second catch by depressing the right side key.
12. The keypad module of claim 11, wherein the means for releasing the keypad inlay from the housing comprises releasing the first arm from the first catch by depressing the left side key using an off-center keystroke and releasing the second arm from the second catch by depressing the right side key using an off-center keystroke, and wherein a non-off-center keystroke on the left side key will not release the first arm from the first catch and a non-off-center keystroke on the right side key will not release the second arm from the second catch.
13. The keypad module of claim 1, wherein the means for securing the keypad inlay to the front side of the housing are not visible when the keypad inlay is attached to the housing.
14. The keypad module of claim 1, wherein the at least two of the plurality of keys are located on the keypad inlay.
15. The keypad module of claim 1, wherein the at least two of the plurality of keys are built into the housing.
16. A keypad module for a portable communication device including a plurality of keys and a housing having a left side, a right side, a front side, the keypad module comprising:
a. a keypad configured to be attached to the housing and having a left side and a right side; and
b. first and second latches that engage first and second catches located on the housing, respectively, when the keypad inlay is attached to the housing, thereby securing the keypad inlay to the housing;
c. wherein the first and second latches are released from the first and second catches, respectively, when at least two of the plurality of keys are simultaneously depressed, thereby releasing the keypad inlay from the housing, and wherein each of the at least two of the plurality of keys actuates an electronic switch when depressed.
17. The keypad module of claim 16, wherein the at least two of the plurality of keys comprise a left side button located on either the left side of the housing or the left side of the keypad inlay and a right side button on either the right side of the housing or right side of the keypad inlay.
18. The keypad module of claim 17, wherein the first and second latches are released from the first and second catches, respectively, when the left and right side buttons are simultaneously depressed using an off-center keystroke on both the left and right side keys, and wherein a non-off-center keystroke on the left side key will not release the first latch from the first catch and a non-off-center keystroke on the right side key will not release the second latch from the second catch.
19. A portable communication device comprising:
a. a plurality of keys;
b. a housing having a left side, a right side, a front side:
c. a keypad module configured to be attached to the housing and including a keypad inlay, a left side and a right side; and
d. first and second latches that engage first and second catches, respectively, when the keypad inlay is attached to the housing, thereby securing the keypad inlay to the housing;
e. wherein the first and second latches are released from the first and second catches, respectively, when at least two of the plurality of keys are simultaneously depressed, thereby releasing the keypad inlay from the housing, and wherein each of the at least two of the plurality of keys actuates an electronic switch when depressed.
20. A method of detaching a keypad module from a portable communication device having a housing plurality of keys, the keypad module including a keypad inlay, the method comprising:
a. releasing the keypad inlay from the housing by simultaneously depressing at least two of the plurality of keys, each of the at least two of the plurality of keys actuating an electronic switch when depressed; and
b. separating the keypad inlay from the housing.
21. The method of claim 20, wherein the plurality of keys comprises a send key and an end key and releasing the keypad inlay from the housing by simultaneously depressing at least two of the plurality of keys, comprises simultaneously depressing the send key and the end key.
22. The method of claim 21, wherein releasing the keypad inlay from the housing by simultaneously depressing at least two of the plurality of keys, comprises disengaging at least one latch from a respective at least one catch by simultaneously depressing at least two of the plurality of keys.
23. The method of claim 20, wherein releasing the keypad inlay from the housing by simultaneously depressing at least two of the plurality of keys, comprises simultaneously depressing at least two of the plurality of keys using an off-center keystroke on each of the at least two of the plurality of keys, and wherein a non-off-center keystroke on either or both of the left and right side buttons will not release the keypad inlay when the left and side buttons are simultaneously depressed.
24. A keypad module for a portable communication device including a plurality of keys and housing having a left side, a right side, a front side, the keypad comprising:
a. a keypad inlay having a left side and a right side;
b. means for securing the keypad inlay to the front side of the housing; and
c. means for releasing the keypad inlay from the housing;
d. wherein the means for releasing the keypad inlay enables the keypad inlay to be removed from the housing by simultaneously depressing at least two of the plurality of keys using an off-center keystroke, and wherein a non-off-center keystroke on either or both of the at least two of the plurality of keys will not release the keypad inlay when the at least two of the plurality of keys are simultaneously depressed.
25. The keypad module of claim 24, wherein the at least two of the plurality of keys comprises a left side button located on either the left side of the housing or the left side of the keypad inlay and a right side button on either the right side of the housing or right side of the keypad inlay and the means for releasing the keypad inlay from the housing comprises simultaneously depressing the left and right side buttons.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A fuel hose comprising a single-layered or multilayered rubber tube and a fluororesin layer formed wholly or partially on the inner surface of the single-layered rubber tube or the inner surface of the innermost layer of the multilayered rubber tube, wherein the fluororesin layer is of a copolymer of vinylidene fluoride (VDF) and chlorotrifluoroethylene (CTFE) containing a metal salt in an amount not exceeding 0.3% by weight relative to the copolymer.
2. The fuel hose according to claim 1, wherein the metal salt is of a monovalent or divalent metal.
3. The fuel hose according to claim 2, wherein the metal salt is at least one inorganic salt selected from the group consisting of a halide, a hydroxide, a carbonate and a sulfate of the monovalent or divalent metal.
4. The fuel hose according to claim 3, wherein the metal salt is potassium chloride.
5. The fuel hose according to claim 1, wherein the content of the metal salt is 0.05 to 0.3% by weight.
6. The fuel hose according to claim 1, wherein the fluororesin layer has a thickness not exceeding 0.5 mm.
7. The fuel hose according to claim 1, wherein the fluororesin layer has a thickness of 0.05 to 0.2 mm.
8. The fuel hose according to claim 1, wherein the fluororesin layer is formed by powder coating.
9. The fuel hose according to claim 1, wherein the fluororesin layer is formed on the inner surface of the rubber tube or the innermost layer thereof except that portion thereof at which the hose is to be connected to a pipe.
10. The fuel hose according to claim 1, wherein the copolymer contains VDF and CTFE in a molar ratio of 98:2 to 85:15.
11. The hose according to claim 1, wherein the single-layered rubber tube or at least the innermost layer of the rubber tube is of any of epichlorohydrin rubber, NBR, fluororubber and NBR-PVC.
12. The hose according to claim 11, wherein the epichlorohydrin rubber is an epichlorohydrin polymer, a copolymer of epichlorohydrin and ethylene oxide, or a copolymer or terpolymer thereof with allyl glycidyl ether.
13. The hose according to claim 11, wherein the NBR has a combined acrylonitrile content of 15 to 45%.
14. The hose according to claim 11, wherein the fluororubber is a copolymer of vinylidene fluoride and hexafluoropropylene, a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene, a copolymer of tetrafluoroethylene and propylene, or a mixture of polyvinylidene fluoride and acrylic rubber.
15. The hose according to claim 11, wherein the NBR-PVC has a combined acrylonitrile content of 25 to 45%.
16. A fuel hose comprising a single-layered or multilayered rubber tube and a fluororesin layer formed wholly or partially on the inner surface of the single-layered rubber tube or the inner surface of the innermost layer of the multilayered rubber tube, wherein the fluororesin layer is of a copolymer of VDF and CTFE and the rubber tube is of a rubber mixture containing acrylic rubber in an amount of 5 to 35 phr relative to a base material of the rubber tube.
17. The fuel hose according to claim 16, wherein the rubber mixture contains the acrylic rubber in an amount of 5 to 25 phr, andor contains an alkyl or alkoxy acrylate having a cure site as the acrylic rubber.
18. A fuel hose comprising a single-layered or multilayered rubber tube and a fluororesin layer formed wholly or partially on the inner surface of the single-layered rubber tube or the inner surface of the innermost layer of the multilayered rubber tube, wherein the fluororesin layer is of a copolymer of VDF and CTFE containing not more than 0.3% by weight of a metal salt relative to the copolymer and the rubber tube is of a rubber mixture containing 5 to 35 phr of acrylic rubber relative to a base material of the rubber tube.
19. The fuel hose according to claim 16, wherein the rubber tube contains at least one of an organic ammonium salt, an organic phosphonium salt and a polyamine additive.
20. The fuel hose according to claim 18, wherein the rubber tube contains at least one of an organic ammonium salt, an organic phosphonium salt and a polyamine additive.