1. A wireless electronic device, comprising:
an encapsulation;
a substrate within said encapsulation, said substrate having first and second opposing regions and electronic circuitry formed within said substrate;
a signal chip for generating a signal under the control of said electronic circuit, said signal chip connected to the first region of said substrate; and
a dual-function battery antenna mounted to the second region of said substrate, wherein said dual-function battery antenna supplies electrical power to at least one of said electronic circuitry and said signal chip, and wherein said dual-function battery antenna is configured to operate as an antenna for transmitting and receiving wireless signals.
2. The device of claim 1, wherein said signal chip is bonded to said substrate.
3. The device of claim 2, wherein said signal chip is bonded to said substrate by a flip-chip bond.
4. The device of claim 1, wherein said substrate comprises a printed circuit board.
5. The device of claim 1, wherein said dual-function battery antenna comprises a substantially cylindrically-shaped button dual-function battery antenna.
6. The device of claim 1, wherein said encapsulation has a diameter less than or equal to 3 millimeters and a height less than or equal to 3 millimeters.
7. A wireless sensor comprising:
an encapsulation;
a substrate within said encapsulation, said substrate having first and second opposing regions and electronic circuitry formed within said substrate;
a sensor chip for generating a sensing signal in response to an external stimulus, said signal chip connected to the first region of said substrate, and the sensing signal being processes by said electronic circuit within said integrated circuit substrate; and
a dual-function battery antenna mounted to the second region of said substrate, wherein said dual-function battery antenna supplies electrical power to at least one of said electronic circuitry and said sensor chip, and wherein said dual-function battery antenna is configured to operate as an antenna for transmitting and receiving wireless signals.
8. The device of claim 7, wherein said sensor chip is bonded to said substrate.
9. The device of claim 8, wherein said sensor chip is bonded to said substrate by a flip-chip bond.
10. The device of claim 7, wherein said substrate comprises a printed circuit board.
11. The device of claim 7, wherein said dual-function battery antenna comprises a substantially cylindrically-shaped button dual-function battery antenna.
12. The device of claim 7, wherein said encapsulation has a diameter less than or equal to 3 millimeters and a height less than or equal to 3 millimeters.
13. A wireless RF signaling device comprising:
an encapsulation;
a substrate within said encapsulation, said substrate having first and second opposing regions and electronic circuitry formed within said substrate;
an RF chip connected to the first region of said substrate; and
a dual-function battery antenna mounted to the second region of said substrate, wherein said dual-function battery antenna supplies electrical power to at least one of said electronic circuitry and said RF chip, and wherein said dual-function battery antenna is configured to operate as an antenna for transmitting and receiving wireless RF signals.
14. The device of claim 13, wherein said sensor chip is bonded to said substrate.
15. The device of claim 14, wherein said sensor chip is bonded to said substrate by a flip-chip bond.
16. The device of claim 13, wherein said substrate comprises a printed circuit board.
17. The device of claim 13, wherein said dual-function battery antenna comprises a substantially cylindrically-shaped button dual-function battery antenna.
18. The device of claim 13, wherein said encapsulation has a diameter less than or equal to 3 millimeters and a height less than or equal to 3 millimeters.
19. The device of claim 13, wherein said RF chip is configured to generate a signal that is transmitted as a wireless RF signal by said dual-function battery antenna.
20. The device of claim 13, wherein said electronic circuitry is configured to process a wireless RF signal received by said dual-function battery antenna.
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 packaging machine comprising:
a cylindrical chute;
means for bending an elongated bag-making film into a tubular form around said chute by mutually overlapping side edges of said film;
a heater unit for longitudinally sealing said mutually overlapping side edges of said film;
heater driving means for moving said heater unit between a sealing position at which said heater unit contacts said film and a retracted position at which said heater unit is separated from said chute; and
an air cylinder for controlling compressive force with which said heater unit at said sealing position compresses said film against said chute by having air of a specified pressure supplied thereto.
2. The packaging machine of claim 1 further comprising pressure regulating means for regulating air pressure supplied to said air cylinder to a specified pressure level and a controller for controllingly varying said specified pressure level.
3. The packaging machine of claim 1 wherein said heater driving means includes another air cylinder.
4. The packaging machine of claim 1 further comprising a support unit which supports said heater unit and is slidable towards and away from said chute, said heater driving means operating to move said heater unit between said sealing position and said retracted position by moving said support unit, said air cylinder acting only on said heater unit to control said compressive force.
5. The packaging machine of claim 4 further comprising support unit moving means for moving said support unit between a work area which includes both said sealing position and said retracted position and a non-working area which is farther away from said chute than said work area.
6. A packaging machine comprising:
a cylindrical chute;
means for bending an elongated bag-making film into a tubular form around said chute by mutually overlapping side edges of said film;
a heater unit for longitudinally sealing said mutually overlapping side edges of said film;
an air cylinder both for moving said heater unit between a sealing position at which said heater unit contacts said film and a retracted position at which said heater unit is separated from said chute and for controlling compressive force with which said heater unit at said sealing position compresses said film against said chute;
air-pressure generating means for generating from a single air source having an initial air pressure both a higher air pressure for moving said heater unit and a lower air pressure, lower than said higher air pressure, for controlling said compressive force; and
switching means for supplying to said air cylinder selectively either said higher pressure to thereby move said heater unit with respect to said film or said lower pressure to thereby control said compressive force.
7. The packaging machine of claim 6 further comprising control means for serving to additionally supply said higher pressure to said air cylinder for a specified length of time while said lower pressure is being supplied to said air cylinder by said switching means.
8. The packaging machine of claim 6 wherein said air-pressure generating means includes a higher air-pressure generating means for generating said higher air pressure from said single air source and a lower air-pressure generating means for generating said lower air pressure from said single air source, and wherein said switching means serves to supply said higher pressure generated by said higher air-pressure generating means to said air cylinder when said heater unit is moved with respect to said chute and to supply said lower pressure generated by said lower air-pressure generating means to said air cylinder when said compressive force is controlled.
9. The packaging machine of claim 8 further comprising control means for serving to additionally supply said higher pressure to said air cylinder for a specified length of time while said lower pressure is being supplied to said air cylinder by said switching means.
10. The packaging machine of claim 8 wherein said air cylinder has a first chamber and a second chamber, and wherein said switching means serves to supply said high pressure to said first chamber to thereby move said heater unit to said retracted position, to supply said high pressure to said second chamber to thereby move said heater unit to said sealing position, and to supply said low pressure to said second chamber to thereby control said compressive force.
11. The packaging machine of claim 10 further comprising control means for serving to additionally supply said higher pressure to said second chamber for a specified length of time while said lower pressure is being supplied to said second chamber by said switching means.
12. The packaging machine of claim 6 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.
13. The packaging machine of claim 7 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.
14. The packaging machine of claim 8 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.
15. The packaging machine of claim 9 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.
16. The packaging machine of claim 10 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.
17. The packaging machine of claim 10 further comprising means for controllingly varying said lower pressure while said lower pressure is being supplied to said air cylinder.