IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0419731
(1982-09-20)
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발명자
/ 주소 |
- Rozmus, Walter J.
- Hochstein, Peter A.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
1 |
초록
▼
An assembly for filling and sealing a cavity (14) in a container (10). The assembly includes a fill passage (18) in sealing engagement with the periphery of the receiving passage (12) in the container (10). A vacuum source (24) withdraws gas from the container (10) and the assembly. Powdered materia
An assembly for filling and sealing a cavity (14) in a container (10). The assembly includes a fill passage (18) in sealing engagement with the periphery of the receiving passage (12) in the container (10). A vacuum source (24) withdraws gas from the container (10) and the assembly. Powdered material under a vacuum is supplied to a vibrating platform (44) which dispenses the material while vibrating so that the material passes through a valve (48, 52), the fill passage (18) and into the container (10). A plug magazine (26, 125) stores and delivers one spherical ball (28) at a time to the fill passage (18) for being forced into the receiving passage (12) to seal the container (10). A vacuum valve (48, 52) seals the material supply from the fill passageway (18) to maintain the vacuum in the material supply when the container (10) is received. A probe (74) has a thermistor at the lower end which changes resistance in response to a change in temperature which occurs upon the material level in the container reaching the lower end of the probe (74), in response to which the vibration of the material supply platform (44) is stopped. The probe (74) is retracted and the snout (68) is moved downwardly to force a ball (28) into the receiving passage (12) to seal the container (10). The vacuum valve (52) is closed, the source of vacuum is closed and the sealed container (10) is received and replaced by another empty container.
대표청구항
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1. A filling assembly for filling a container (10) through a receiving passage (12) of a predetermined length therein with material, said assembly including a housing (16) having a fill passage (18) for communicating with the receiving passage (12) of a container (10), a vacuum source (24) for withd
1. A filling assembly for filling a container (10) through a receiving passage (12) of a predetermined length therein with material, said assembly including a housing (16) having a fill passage (18) for communicating with the receiving passage (12) of a container (10), a vacuum source (24) for withdrawing gas from the container (10) and the fill passage (12), material supply means (40) for supplying material to said fill passage (18) for filling the container (10) through the receiving passage (12), delivery control means (38) having an "on" condition for allowing material to flow from said material supply means (40) to said fill passage (18) and an "off" condition for terminating such flow and sealing said material supply means (40) from said fill passage (18), plug magazine means (26, 125) storing a plurality of plugs (28) for delivering one plug at a time to said fill passage (18) so that the plug (28) engages the receiving passage (12) of the container (10) and for maintaining a vacuum seal between said plug magazine means (26, 125) and said fill passage (18) to maintain a vacuum therein, a snout means (56) having a bore (58) extending thereinto from a distal end (60) thereof and movable from an initial position through said fill passage (18) to a ram position to engage a plug (28) and force the plug (28) into the receiving passage (12) of the container (10) to seal the container (10), and probe means (62) disposed in said bore (58) of said snout means (56) and movable between a retracted position and a sensing position extending through said fill passage (18) and into the receiving passage (12) of the container (10) for providing a full signal when the level of material in the container (10) reaches said probe means (62) for controlling said delivery control means (38), probe actuation means (76, 78, 80) for moving said probe means (62) between said retracted position and said sensing position, snout actuation means (84, 86) for moving said snout means (56) between said initial position and said ram position, said probe actuation means (76) being supported (88) by said snout actuation means (86) for movement therewith upon actuation of said snout actuation means and for movement relative to said snout means in moving said probe means between said retracted and sensing positions. 2. An assembly as set forth in claim 1 further characterized by said probe means (62) comprising a thermistor (106) having a resistance which varies with temperature, a constant current source (108, 110, 112) to said thermistor (106) for heating said thermistor (106), and detection means (114, 116, 118, 120, 122) for detecting a change in resistance of said thermistor (106) in response to a change in temperature of said thermistor (106) by contact with a level of material in the container (10) to provide the full signal to place said delivery control means (38) in said "off" condition. 3. An assembly as set forth in any one of claim 1 further characterized by said delivery control means (38) including a platform (44) for receiving material from said material supply means (40) and vibration means for vibrating said platform (44) in said "on" condition to dispense material from said platform (44) as said platform is vibrated by said vibration means. 4. An assembly as set forth in claim 3 further characterized by said delivery control means (38) including a delivery valve means (48, 52) disposed between said platform (44) and said fill passage (18) and movable between an open position allowing material flow therethrough and a closed position to provide a vacuum seal between said material supply means (40) and said fill passage (18). 5. An assembly as set forth in claim 4 further characterized by said vibration means being in said "off" condition in response to said full signal. 6. An assembly as set forth in claim 1 further characterized by said housing (16) including a snout cavity (64) disposed above said fill passage (18), said snout means (56) being slidably supported in said snout cavity (64), first internal seal means (90) disposed between said housing (16) and said snout means (56) for sealing said fill passage (18) from said snout cavity (64). 7. An assembly as set forth in claim 6 further characterized by said snout means (56) including a probe cavity (70) disposed above said bore (58) in said snout means (56), said probe means (62) being slidably supported in said probe cavity (70), second internal seal means (92) disposed between said snout means (56) and said probe means (62) for sealing said bore (58) from said probe cavity (70). 8. An assembly as set forth in claim 7 further characterized by including first external seal means (94) disposed between said snout cavity (64) and said snout means (56) for sealing said snout cavity (64) from the exterior environment. 9. An assembly as set forth in claim 8 further characterized by including second external seal means (98) disposed between said probe cavity (70) and said probe means (62) for sealing said probe cavity (70) from the exterior environment. 10. An assembly as set forth in claim 9 further characterized by including gas supply means (100, 104) for selectively supplying gas to said bore (58) of said snout means (56) below said second internal seal means (92) for relieving the vacuum in said bore (58) and said fill passage (18) prior to removing the container (10) from sealing engagement with said fill passage (18). 11. An assembly as set forth in claim 9 further characterized by including gas supply means (100, 102, 104) for selectively supplying gas to said snout cavity (64) below said first external seal means (94) and to said bore (58) of said snout means (56) below said second external seal means (98). 12. An assembly as set forth in claim 11 further characterized by said snout means (56) including a piston-like portion (66) in sliding engagement with said snout cavity (64) and extending out of said housing (16), and a tubular snout member (68) having said bore (58) therein and of smaller outer diameter than said piston-like portion (66), said tubular snout member (68) extending downwardly from said piston-like portion (66) through said first internal seal means (90) and into said fill passage (18). 13. An assembly as set forth in claim 12 further characterized by said probe means (62) including a cylindrical portion (72) in sliding engagement with said probe cavity (70) and extending out of said piston-like portion (66) of said snout means (56), and a rod-like probe (74) extending downwardly from said cylindrical portion (72) and through said second internal seal means (92) and into said bore (58) of said tubular snout member (68).
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