IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0973702
(2001-10-11)
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발명자
/ 주소 |
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출원인 / 주소 |
- Packaging Technologies & Inspection LLC
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
7 |
초록
▼
A method and apparatus for testing seals of packages or containers incorporating gas permeable materials wherein the packages are placed between opposing components of a vacuum test chamber such that the seals of the packages are open to a pressure testing system. A flexible bladder backed by a foam
A method and apparatus for testing seals of packages or containers incorporating gas permeable materials wherein the packages are placed between opposing components of a vacuum test chamber such that the seals of the packages are open to a pressure testing system. A flexible bladder backed by a foam material or pressurized fluid seal the gas permeable material afterwhich at least a partial vacuum is drawn to create pressure differential between interior sealed spaces of the packages and the exterior of the package seals. In some embodiments, flexible bladders are provided to initially seal opposite surfaces of packages having opposite gas permeable material covering layers.
대표청구항
▼
A method and apparatus for testing seals of packages or containers incorporating gas permeable materials wherein the packages are placed between opposing components of a vacuum test chamber such that the seals of the packages are open to a pressure testing system. A flexible bladder backed by a foam
A method and apparatus for testing seals of packages or containers incorporating gas permeable materials wherein the packages are placed between opposing components of a vacuum test chamber such that the seals of the packages are open to a pressure testing system. A flexible bladder backed by a foam material or pressurized fluid seal the gas permeable material afterwhich at least a partial vacuum is drawn to create pressure differential between interior sealed spaces of the packages and the exterior of the package seals. In some embodiments, flexible bladders are provided to initially seal opposite surfaces of packages having opposite gas permeable material covering layers. e transport vehicle in the reverse direction causing the carrier to simultaneously move in the reverse direction over a distance corresponding at least to the length of the bale. 2. A bale sheathing system comprising: a tubular plastic film forming a sheath for sheathing bales of plants; a movable carrier for carrying said bales; a transport vehicle for transporting said bales; a handling tool carried by said transport vehicle, said handling tool comprising: a frame having means for fastening to one of a three point coupling system of the transport vehicle and a loading arm arranged at a front of the transport vehicle; at least one pair of spindles mounted on the frame; a pusher-ejector device integral with the frame, said pusher-ejector device having a pusher and being upstream, in a direction of forward movement of the transport vehicle, of the at least one pair of spindles; and means for moving said pusher from a first position so that the pusher is immediately adjacent a first end of said at least one pair of spindles, to a second position so that the pusher is immediately adjacent a second end of said at least one pair of spindles, movement of the pusher being in a direction of forward movement of the transport vehicle, so that movement of said pusher to said second position causes said pusher to push a first bale inside the sheath against a stationary second bale previously pushed into the sheath, so that the first bale rests against the second bale, movement of the first bale against the second bale causes a simultaneous reactionary movement of the transport vehicle in a reverse direction, said movement of the transport vehicle in the reverse direction causes the carrier to simultaneously move in the reverse direction over a distance corresponding at least to a length of one of said bales. 3. The bale sheathing system according to claim 2, wherein the movable carrier further comprises: a base plate having a plurality of rails that extend over a length equal to at least twice a length of one of said bales, each said plural rails having a rail extension, each said rail extension having a first end connected to one of said plural rails; an articulated stop between said plural rail extensions, said stop being articulated at a second end of said plural rail extensions about a horizontal and transverse axis; an elastic member maintaining said stop in a protruding first position and enabling said stop to automatically retract to a second position when a bale is placed on the base plate, wherein said stop has a first end downstream, in a direction of forward movement, of said horizontal and transverse axis, and wherein said handling tool further comprises a crosspiece beneath the frame, said first end of said stop engages said crosspiece when a bale is ejected by the pusher so that the carrier and the transport vehicle are simultaneously moved in the reverse direction. 4. The carrier according to claim 3, further comprising a second removable stop between the plural rails, upstream of the sheath, that enables sheathing of a last placed bale. 5. The carrier according to claim 3, wherein an upstream section of the base plate forms a second frame articulated around a transversal horizontal axis, said second frame is retractable and lockable using tension rods and comprises, a chassis of said carrier and anchoring means cooperating with the three-point coupling system of the transport vehicle. 6. The carrier according to claim 3, further comprising: a drawing frame having supports for storing the sheath; and guides for centering and guiding the bale during insertion into the drawing frame in order not to damage the sheath stretched between the supports of said drawing frame, said guides being upstream of an inlet of the drawing frame, at the plural rails of the carrier. 7. The carrier according to claim 3, wherein when said carrier is in an active sheathing position, a chassis of the carrier is config ured in order to place the rails used for supporting and guiding the bales on a tilted plane situated close to the ground, at a height compatible, upstream, with the lifting capacity of the bales of the transport vehicle when the transport vehicle is fitted with a handling tool fixed directly on the three-point lifting system, and downstream, at less than ten centimeters above the ground. 8. The carrier according to claim 3, wherein a length LS of the base plate of the carrier extending between an inlet of a drawing frame for storing the sheath and an active face of the stop is substantially greater than a length of a bale increased by a distance between the pusher and an active face of the crosspiece situated below the frame of said tool and that co-operates with said active face of the stop. 9. The carrier according to claim 8, wherein a length LR of the quiding rails is approximately twice and a third of the length of said bale, said rails extending downstream of a middle axis of the drawing frame, over a length equal to approximately one third of said length LR. 10. The handling tool according to claim 2, wherein the pusher-ejector device comprises a pair of compasses and a hydraulic actuator for extending the pair of compasses, causing the pusher-ejector device to move over a distance that is at least equal to the length of the bale, in order to eject the bale from the at least one pair of spindles, and to simultaneously move, in the reverse direction, the transport vehicle and the sheathing carrier by the distance that is at least equal to the length of the ejected bale. 11. The handling tool according to claim 10, wherein the pair of compasses comprise: a first leg having a length approximately equal to a width of the bale, the first leg is articulated at a first end on an axle integral with the frame; and a second leg having first and second ends, the first end of the second leg being articulately connected to a second end of the first leg, the second end of the second leg being connected to the pusher-ejector device, the pusher-ejector device being centered with respect to a middle vertical plane of the at least one pair of spindles, the actuator moving the first leg causing the second leg to pivot and extend so that the pusher-ejector device remains approximately centered on a longitudinal axis of the transport vehicle throughout a movement of the pusher-ejector device. 12. The handling tool according to claim 11, further comprising a chain that reels around a circular sector of a pulley-pinion and that extends around an articulation axis at the second end of the first leg, the circular sector being connected to the first end of the second leg, a first end of the chain being integral with the frame at a point that enables the displacement of the pusher-ejector device along a line that corresponds to the longitudinal axis of the transport vehicle. 13. The handling tool according to claim 12, wherein the chain is a roller chain. 14. The handling tool according to claim 2, wherein the frame further comprises a cross piece that serves as a marker with respect to the ground to enable positioning of the frame during spindling of a bale to be spindled, in order to place said bale to be spindled with respect to the frame, the cross piece in cooperation with a stop provided on the carrier being a means for pulling and driving the carrier during ejection of the bale. 15. The handling tool according to claim 2, wherein the transport vehicle is a farming tractor. 16. The handling tool according to claim 13,
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