US3371781A - Apparatus for inspecting sealed containers - Google Patents

Apparatus for inspecting sealed containers Download PDF

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Publication number
US3371781A
US3371781A US447248A US44724865A US3371781A US 3371781 A US3371781 A US 3371781A US 447248 A US447248 A US 447248A US 44724865 A US44724865 A US 44724865A US 3371781 A US3371781 A US 3371781A
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United States
Prior art keywords
container
sensor
cap
containers
conveyor
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Expired - Lifetime
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US447248A
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English (en)
Inventor
George D Armbruster
Walter J Ringel
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OI Glass Inc
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Owens Illinois Inc
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Publication date
Application filed by Owens Illinois Inc filed Critical Owens Illinois Inc
Priority to US447248A priority Critical patent/US3371781A/en
Priority to ES0325299A priority patent/ES325299A1/es
Priority to SE4819/66A priority patent/SE317208B/xx
Priority to FR56892A priority patent/FR1475254A/fr
Priority to BE679268D priority patent/BE679268A/xx
Priority to IL25558A priority patent/IL25558A/xx
Priority to GB15823/66A priority patent/GB1144181A/en
Priority to DE19661573737 priority patent/DE1573737C/de
Application granted granted Critical
Publication of US3371781A publication Critical patent/US3371781A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/24—Special measures for applying and securing caps under vacuum

Definitions

  • Baby food containers conventionally take the form of a glass jar having a metal cap provided with a centrally located flip panel which assumes a con cave configuration when a s'uflicient vacuum exists within the jar and assumes a convex configuration in the absence of a sufficient vacuum.
  • the food is placed in the jar and the head space in the jar is filled with steam before the cap is put on.
  • the steam condenses thereby forming a vacuum in the head space of the container if the container is properly sealed and the formation of this vacuum deflects the flip panel in the container cap to its concave position.
  • the flip panel maintains this position as long as the vacuum exists within the jar, thus providing a continuous indication as to whether or not the jar is properly sealed. Sealing of the jar is of critical importance because an improper seal admits air into the jar, causing spoilage of the food.
  • FIGURE 1 is a side elevational view, with certain parts broken away or omitted, showing one form of apparatus embodying the invention
  • FIGURE 2 is a detail top plan view of a portion of the apparatus of FIGURE 1 with certain parts broken away, omitted or shown in section;
  • FIGURE 3 is a detail cross sectional view taken on line 3-3 of FIGURE 2;
  • FIGURE 4 is a detail cross sectional view taken on line 4-4 of FIGURE 2;
  • FIGURE 5 is a detail cross sectional view taken on line 5-5 of FIGURE 2;
  • FIGURE 6 is a detail cross sectional view of a typical container top or cap which the apparatus of FIGURE 1 is operable to inspect;
  • FIGURE 7 is a partial side elevational view of a baby food jar or the like with the jar finish and cap shown in section;
  • FIGURE 8 is an end elevational view, partially in section, showing a modification of the apparatus of FIG- URE 1;
  • FIGURE 8a is a detail cross sectional view of a container employing another form of cap
  • FIGURE 9 is a cross sectional view taken on line 9-9 of FIGURE 8.
  • FIGURE 10 is a schematic diagram of the control circuit or the embodiment of FIGURE 1;
  • FIGURE 11 is a schematic diagram of a portion of a control circuit employed in the embodiment of FIG- URES 8 and 9, the omitted portions of the FIGURE 11 circuit being identical to the corresponding portions of the circuit of FIGURE 10.
  • one form of apparatus embodying the present invention includes an endless belt conveyor designated generally 20 which is operable to convey containers C to be inspected along its upper run 22 in a direction from right to left as viewed in FIGURE 1.
  • Conveyor 20 is driven in continuous movement by a schematically illustrated drive motor 24 and sealed containers C are fed by suitable mechanism, not shown, onto the right hand end of upper rim 22 and are fed onto a suitable takeout, not shown, at the left hand end of upper run 22. Because of a required high capacity of these units, normally in the range of 1000 containers per minute, the containers passing along conveyor 20 are in an abutted single line.
  • An inspection station designated generally 26 is mounted in operative relationship to the upper run of conveyor 20 and includes a pair of side plates 28 and 30 (FIGURE 2) which form a part of or are fixedly mounted upon fixed elements of the frame of conveyor 20.
  • a pair of opposed guide rails 32 and 34 are mounted upon side plates 28 and 30 respectively to guide containers C during their transit of inspection station 26 to positively locate the containers transversely of the conveyor.
  • Guide rails 32 and 34 are mounted upon side plates 28 and 30 by angle brackets 33 fixedly secured as by bolts to the respective guide rails.
  • Angle brackets 38 are slidably supported upon fixed brackets 42 fixedly secured to side plates 28 and 3t ⁇ and are clamped in adjusted position transversely of the conveyor by bolts 44 which pass through elongate slots and angle brackets 38 and are threaded into fixed brackets 42.
  • a rigid angle member 46 has a vertical arm 43 which is clamped into face-to-face engagement with side plate 28 by a pair of clamping screws 50 which pass through elongate slots 52 in arm 48 to accommodate vertical adjustment of member 46.
  • a positioning screw 54 passes downwardly through a bore 56 in the horizontal arm 58 of member 46 and is threaded through a fixed nut 6t? Welded to arm 48. The lower end 62 of screw 54 bears against the upper surface of plate 23 so that turning of screw 54 can vertically shift angle member 4-6 relative to the fixed member 28 when screws 59 are loosened.
  • a support plate 64 is supported upon the horizontal upper arm 53 of angle member 46 and is clamped to arm 58 in selected adjusted positions transversely of con veyor 20 by clamping screws 66 which pass through elongate slot 68 in plate 64 and are threaded into arm 53.
  • a floating head assembly designated generally 70 is suspended at the underside of plate 64.
  • Head assembly 70 includes a dish shaped support head 72 having an upwardly projecting central boss 72 which projects upwardly through a bore 76 through plate 64.
  • Head 72 is suspended from plate 64 by four symmetrically located headed support pins 78.
  • the shanks of pins 78 are slidably received within bores 80 which extend through plate 64 and the lower ends of pins 78 are fixedly secured, as by threaded engagement, into head 72.
  • a compression spring 82 surrounds each pin 78 and bears between the lower surface of support plate 64 and the upper surface of head 72.
  • Bores 76 and 80 provide sufficient radial clearance between boss 74 and pins 80 so that head 72 can move upwardly freely from its lowermost position as determined by the engagement of the heads of pins 78 with the top of support plates 70, and this clearance also permits a limited tilting movement of head 72 which may be required by conditions to be described below.
  • the apparatus is employed to determine whether or not a sealed container, such as a baby food jar, has a suflicient vacuum in the container.
  • a closure cap frequently used for baby food jars.
  • the particular cap disclosed is described in detail in US. Patent No. 3,152,711 and hence only those features of the cap germane to the present invention will be described in detail.
  • the cap as shown in FIG- URE 6, includes a top panel which is formed with an upwardly projecting annular peripheral rim portion 84 and a centrally located flip panel 86 which normally assumes the convex configuration shown in full line in the cross sectional view of FIGURE 6.
  • the present invention is especially concerned with inspecting jars employing closures of this type to determine Whether or not an adequate vacuum exists within the container, the presence of the vacuum in turn indicating a satisfactory seal. Presence of an adequate vacuum is exhibited by a flip panel 86 in its concave position, while absence of a satisfactory vacuum is exhibited by the convex position of flip panel 86.
  • a proximity sensor 88 is fixedly mounted within the boss of head 72.
  • the particular proximity sensor employed takes the form of a commercially available proximity switch manufactured by the Micro Switch Division of Honeywell, Freeport, 111., and is described in detail in data sheet 213A supplement to Honeywell catalog 85.
  • the sensor is connected to an oscillator which in turn is connected through an amplifier to a monostable flip flop which in turn controls a relay.
  • the sensor is an integral part of the oscillator stage and when an electrically conductive object is located within the detection field of the sensor, the object absorbs oscillator energy which results in an amplitude change. This change controls the state of the monostable flip flop which in turn controls a relay.
  • the sensor generates a signal to act as a switch when a metal object is moved into the field of the sensor.
  • Such devices can be adjusted to an extreme degree of sensitivity.
  • the total range of deflection of the cap between the convex and concave position is approximately .050 inch and commercially available sensors can be adjusted to detect the existence of the concave or convex position of the flip panel of the cap.
  • the underside of head 72 is formed with a downwardly projecting annular ri-m 90 which is adapted to rest upon the peripheral rim portion 84 of the container cap as the container is brought into registry beneath the head.
  • Springs 82 and the floating mounting of head 72 upon support plate 64 permit the head to elevate and depress to compensate for containers of varying heights.
  • the normal rest position of head 72, determined by adjustment of pins 78 and the height adjustment of angle mernber 46 is selected to be such that the lower surface of head 72 is spaced above conveyor 20 by a distance less than the minimum container height.
  • head 72 In order to accurately inspect 'all containers, it is necessary that head 72 further be capable of tilting movement out of a horizontal plane to accurately sense the presence or absence of a satisfactory vacuum in a container in those cases where the container cap may be cocked, as by an improper engagement of the cap with the screw thread on the container finish. Where the cap is not properly threaded onto the container, it is almost inevitable that the vacuum within the container has been lost, and unless the head can tilt, the head is elevated to the highest point of the tilted jar rim, thus spacing the sensor 88 farther from the center of the cap than normal. This leads to the possibility of failing to detect an improperly sealed container.
  • the clearances provided by bores 76 and permit the head to tilt so that full contact through 360 is achieved between rim and head 72 and the peripheral rim portion 84 of the cap even though the cap or container may be tilted during its pass-age beneath the inspection head.
  • a pneumatic differential motor 92 is mounted upon a plate 94 which, as best seen in FIGURES 2 and 5, is mounted for adjustment longitudinally of conveyor 20 by clamping bolts 96 which pass through elongate slots 98 in plate 94 and are threaded into a second plate 100.
  • Plate 100 in turn is mounted for adjustment transversely of conveyor 20 by a dovetail groove 102 engagement with a third plate 104.
  • Plate 104 is an angle member whose horizontal arm is slidably engaged with plate 100 and whose vertical arm is 'adjustably clamped for vertical adjustment of the entire assembly upon plate 28 by clamping screws 106 which pass through an elongate slot 108 in the vertical arm of member 104.
  • a clamping screw 110 passes upwardly through an elongate slot 112 (FIGURE 5) and is threaded into plate 100.
  • motor 92 can be adjustably positioned vertically, transversely, and longitudinally relative to conveyor 20.
  • the purpose of the universal positioning of motor 92 is to enable a precise and accurate location at which the piston rod 114 of motor 92 strikes the container.
  • Piston rod 114 is normally located in a retracted position clear of the path of containers upon conveyor 20.
  • motor 92 is actuated to extend its piston rod, the piston rod tip 116 striking the detected container to eject the container from the conveyor onto a table, not shown, located on the opposite side of the conveyor from motor 92.
  • Vertical adjustment of motor 92 is essential so that tip 116 of piston rod 114 will strike the container in a horizontal plane containing the center of gravity of the container.
  • Adjustment of motor 92 longitudinally of the conveyor is essential in order that the tip 116 will strike the container in line with the vertical center line of the cylindrical container. Because of the inherent delay between the triggering of the sensor and the stroking of piston rod 114, it is'necessary that the longitudinal axis of piston rod 114 be located slightly downstream of the conveyor from the center line of sensor 88. This distance must, of course, be calibrated both in terms of the reaction time delay between the triggering of the sensor and the stroking of the piston rod 114 and the speed of travel of the containers along conveyor 20.
  • Adjustment of motor 92 transversely of the conveyor is likewise related to the speed of travel of the containers along the conveyor.
  • the conveyor speed is such that containers areconveyed past the inspecting head at rates in the order of 1000 containers a minute.
  • the containers are fed along the conveyor in single line in contact witheach other and thus, when a container is to be ejected, it is necessary that the piston rod perform its function of ejecting the dud container and retracting before the next successive container reaches the piston rod.
  • motor 92 is a relatively small pneumatic motor, a motor with a inch bore and a /2 inch stroke having been effectively employed.
  • a full stroke of the motor is employed, and by adjusting the position of motor 92 transversely of the conveyor the piston rod projects into the path of travel of the containers only by a selected distance determined by adjusting the position of the cylinder of motor 92 toward or away from the path of travel of the conveyor.
  • tip 116 is constructed in a conical shape and to cushion the striking of the tip against the container, tip 116 is made of rubber or other suitable resilient material. The ejecting of the container is accomplished by striking and knocking the container out of line rather than merely pushing the container to one side.
  • the cont-r01 circuit is schematically shown in FIGURE 9.
  • Sensor 88 is connected by its output lead 120 to an amplifier 122.
  • Amplifier unit 122 is commercially available from the manufacturer of sensor 88 and suitable units are described in the micro switch data sheet 213A referred to above.
  • sensor 88 and amplifier unit 122 act at a switch to electrically connect a solenoid 124 to electric power supply line L1 and L2 when the sensor detects a dud container.
  • Solenoid 124 forms a part of a solenoid actuated 3-way valve designed generally 126 which is of a commercially available construction. The specific valve disclosed is manufactured and sold by Ross Operating Valve Company of Detroit, Mich., under catalog No.
  • valve 1613A2001 is in essence a normally closed 3-Way valve which alternatively connect.
  • a head end conduit 128 to an atmospheric vent 130 or to a high pressure supply conduit 132 which is connected to a pressure source 134 through a pressure regulator 136.
  • the normal connection of valve 126 is to connect head end conduit 128 to vent 130 as shown in FIGURE 10, when the solenoid is de-energized.
  • solenoid 124 Upon energization of solenoid 124, the connections of valve 126 are switched to connect high pressure conduit 132 to head end conduit 128.
  • the rod end of the cylinder of motor 92 is connected by a rod end conduit 138 to a pressure accumulator 140 which in turn is connected to pressure source 134 via a conduit 142 having a second pressure regulator 144 connected in the conduit.
  • Accumulator 140 (see FIGURE 1) is a simple air chamber whose volume may be adjusted as by an adjusting screw 146.
  • Pressure regulators 136 and 144 are set so that a relatively high pressure, such as 60 p.s.i., exists in conduit 132 while a relatively low pressure of approximately 5 p.s.i., for example, is normally maintained in accumulator 140 and rod end conduit 138.
  • a pressure of 5 p.s.i. is applied to the rod end of the cylinder of motor 92, thereby urging piston rod 114 to its retracted position, the head end of motor 92 being connected to vent.
  • solenoid 124 of valve 126 is energized and the valve connections are shifted to connect head end conduit 128 to high pressure conduit 132, thereby applying 60 p.s.i. to the head end of the cylinder of motor 92. Because of the small internal dimensions of motor 92, the 55 p.s.i. differential pressure applied to the head end of the motor drives piston rod 114 to its fully extended position almost immediately.
  • the pressure in chamber 140 can be built up above its normal 5 p.s.i. pressure to some value well below 60 p.s.i., as for example 20 p.s.i.
  • the time period of energization of solenoid 124 is determined by operating characteristics of sensor 88 and amplifier unit 122.
  • the time delay between actuation of sensor 88 and energization of solenoid 124 is dependent upon the particular sensor-amplifier unit combination chosen, operating response times of commercially available equipment varying between 5 and 40 milliseconds.
  • the release response time or time period between energization and de-energization of solenoid 124 is dependent both on the characteristics of the system and the sensing distance and can be varied between 8 and 120 milliseconds.
  • a further release response delay is encountered in the time required to physically shift valve 126 from its actuated position to its vent position. Shifting movement of the valve from its normal vent position to actuated position, as well as the operating response time of the sensor system, is compensated for by the positioning adjustment of motor 92 longitudinally of the conveyor.
  • valve 126 need be connected to supply pressure to the head end of motor 92 for only an extremely short period of time because the motor strokes to its fully extended position almost instantaneously.
  • the release response time is thus chosen to be as short as possible consistent With a full stroke of piston rod 114.
  • FIG- URES 8, 8a, 9 and 11 A modification of the invention is disclosed in FIG- URES 8, 8a, 9 and 11.
  • the configuration of the top surface of the cap is such that the sensitivity of the sensor can not be adjusted to distinguish between the mass of metal at the cap rim and the flip panel at the center.
  • the configuration of the cap is such that the sensor is actuated both when the leading and trailing edge of the cap pass beneath the sensor.
  • FIGURE 8a having a top panel 200 which in general is perfectly flat except for the depressed flip panel 202 in the center section.
  • a second sensor 204 is added to the previously described embodiment and is mounted upon a bracket 206 attached to support plate 64.
  • Sensor 204 is located with its longitudinal center line in the same vertical plane as sensor 88 and is located to be actuated by the metal of the cap rim when the cap is accurately centered under sensor 88.
  • the two sensors are connected in series so that amplifier unit 122 is triggered only when both sensors 88 and 204 are simultaneously actuated.
  • Sensor 204 will be actuated every time a container cap is centered beneath sensor 88, however at this time sensor 88 will not actuate unless the cap indicates an insufficient vacuum in the container.
  • Sensor 88 will be actuated twice during the passage of each container, once as the leading portion of the cap passes beneath it and once as the trailing portion of the cap passes beneath it. However, at both these times, the spacing between sensor 204 and the cap is such that sensor 204 will not be actuated.
  • FIGURE 11 indicates schematically the electrical connections of the embodiment of FIGURES 8 and 9, the remaining portion of the pneumatic circuit having been omitted from FIGURE 11 since it is identical with the pneumatic circuit of FIGURE 10.
  • the combination comprising conveyor means for moving containers in succession past an inspection station, a floating head element at said inspection station mounted for vertical movement and for tilting movement, a flat support surface on said head element adapted to be supported by the peripheral rim portion of a container top when the container is at said inspection station, sensor means mounted in said head element to be supported at a predetermined level relative to the rim portion of the container top in vertical registry with the flip panel therein when said support surface of said head element is supported by the rim portion of the container top, said sensor means being responsive to the proximity of the flip panel when in vertical registry therewith to generate a signal only when said flip panel is convex to a degree indicating an unsatisfactory vacuum in the container, and means responsive to the generation of a signal by said sensor means for
  • means for ejecting comprises a differential motor having a cylinder and a piston rod moveable transversely of said conveyor means between a normal retracted position clear of the path of containers along said conveying means and an extended position wherein said rod projects into the path of containers on said conveyor means, means for adjustably positioning the motor transversely of said conveyor to regulate the portion of the stroke of said rod into the path of containers, and means for adjustably positioning said motor longitudinally of said conveyor means to accommodate for movement of a container to be ejected along said conveyor means in the time interval between the generation of said signal and the stroking of said piston rod from said normal retracted position.
  • said means for ejecting further comprises a pressure source, and a differential motor having a cylinder and a piston rod, valve means normally connecting the head end of said motor cylinder to vent and operable in response to the generation of a signal by said sensor means to connect said head end to said source, and a pressurized accumulator chamber connected to the rod end of said cylinder, the pressure in said chamber when said piston rod is in its retracted position being substantially less than the pressure applied to said head end when connected to said source.
  • the combination comprising conveyor means for moving containers in succession past an inspection station, a support plate mounted in overlying relationship to said conveying means at said inspection station, a head element having a flat annular bottom surface suspended from said support plate for vertical movement relative thereto to and from a normal rest position at which the bottom surface of said head element is located in a horizontal plane below the minimum height of a container top above said conveying means and for tilting movement in which said bottom surface is inclined from said horizontal plane, said bottom surface being adapted to be supported by the peripheral rim portion of a container top when the container is at said inspection station, sensor means mounted in said head element to be supported at a predetermined level relative to the rim portion of the container top in vertical registry with the flip panel therein when the bottom surface of said head element is supported

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Measuring Fluid Pressure (AREA)
  • Sampling And Sample Adjustment (AREA)
US447248A 1965-04-12 1965-04-12 Apparatus for inspecting sealed containers Expired - Lifetime US3371781A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US447248A US3371781A (en) 1965-04-12 1965-04-12 Apparatus for inspecting sealed containers
ES0325299A ES325299A1 (es) 1965-04-12 1966-04-06 Un aparato para inspeccionar recipientes cerrados.
FR56892A FR1475254A (fr) 1965-04-12 1966-04-07 Procédé et appareil pour vérifier des récipients capsulés
SE4819/66A SE317208B (ja) 1965-04-12 1966-04-07
BE679268D BE679268A (ja) 1965-04-12 1966-04-08
IL25558A IL25558A (en) 1965-04-12 1966-04-10 Apparatus for inspecting sealed containers
GB15823/66A GB1144181A (en) 1965-04-12 1966-04-12 Container inspection
DE19661573737 DE1573737C (de) 1965-04-12 1966-04-12 Vorrichtung zur Vakuumprüfung von verschlossenen Behaltern

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Application Number Priority Date Filing Date Title
US447248A US3371781A (en) 1965-04-12 1965-04-12 Apparatus for inspecting sealed containers

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US3371781A true US3371781A (en) 1968-03-05

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US447248A Expired - Lifetime US3371781A (en) 1965-04-12 1965-04-12 Apparatus for inspecting sealed containers

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US (1) US3371781A (ja)
BE (1) BE679268A (ja)
ES (1) ES325299A1 (ja)
GB (1) GB1144181A (ja)
IL (1) IL25558A (ja)
SE (1) SE317208B (ja)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416360A (en) * 1966-10-19 1968-12-17 Anchor Hocking Glass Corp Dud detector for small diameter caps
US3465878A (en) * 1967-03-07 1969-09-09 Anchor Hocking Glass Corp Vacuum detecting apparatus for sealed containers
US3633742A (en) * 1970-07-01 1972-01-11 Continental Can Co Method and apparatus for classifying and sorting closure caps
US3700101A (en) * 1971-05-18 1972-10-24 Aluminum Co Of America Container inspection apparatus
US3991622A (en) * 1973-11-05 1976-11-16 Hisanao Aihara Apparatus for measuring airtightness of sealed body
US4188819A (en) * 1978-12-15 1980-02-19 Campbell Soup Company Method and apparatus for sensing gas pressure in a container
US4306448A (en) * 1979-12-10 1981-12-22 The West Company Apparatus, method and system for determining the integrity of sealed containers
US4313171A (en) * 1978-07-08 1982-01-26 Toyo Seikan Kaisha, Ltd. Internal pressure determining method and system for hermetically sealed containers using electromagnetic induction
US4315427A (en) * 1980-05-12 1982-02-16 The West Company Apparatus, method and system for determining the integrity of sealed containers
US4510860A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Latching mechanism for manually rotatable carrier in apparatus for processing recyclable containers
US4510857A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Container recycling apparatus having shock mounted manually rotatable carrier
US4512253A (en) * 1983-12-08 1985-04-23 Aluminum Company Of America Apparatus for processing recyclable containers
US4519306A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Process for recycling containers
US4519307A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Container recycling apparatus using scanning means to read code markings on containers
US4526096A (en) * 1983-12-08 1985-07-02 Aluminum Company Of America Apparatus for processing used containers having improved crusher means
US4558775A (en) * 1983-12-08 1985-12-17 Aluminum Company Of America Apparatus for passive analysis of containers to determine acceptability for recycling
FR2596153A1 (fr) * 1986-03-18 1987-09-25 Tronyx Procede et dispositif de controle du vide dans des recipients notamment a conserve
US4901558A (en) * 1988-12-22 1990-02-20 Geo A. Hormel & Co. Seal integrity tester and method
US4922746A (en) * 1988-05-25 1990-05-08 Benthos, Inc. Leak testing
US5033287A (en) * 1988-03-14 1991-07-23 Ajinomoto Co., Inc. Method for inspecting a sealing property of a plastic container
US5111684A (en) * 1990-11-21 1992-05-12 Pack Systems Method and apparatus for leak testing packages
US5226316A (en) * 1992-03-20 1993-07-13 Oscar Mayer Foods Corporation Package leak detection
US5513516A (en) * 1992-05-01 1996-05-07 Visi-Pack, Inc. Method and apparatus for leak testing a container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836296A (en) * 1955-03-28 1958-05-27 Du Pont Detector apparatus
US3206025A (en) * 1963-05-16 1965-09-14 Anchor Hocking Glass Corp Detecting mechanism
US3206027A (en) * 1963-05-27 1965-09-14 Continental Can Co Apparatus for detecting loss of vacuum in sealed containers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836296A (en) * 1955-03-28 1958-05-27 Du Pont Detector apparatus
US3206025A (en) * 1963-05-16 1965-09-14 Anchor Hocking Glass Corp Detecting mechanism
US3206027A (en) * 1963-05-27 1965-09-14 Continental Can Co Apparatus for detecting loss of vacuum in sealed containers

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416360A (en) * 1966-10-19 1968-12-17 Anchor Hocking Glass Corp Dud detector for small diameter caps
US3465878A (en) * 1967-03-07 1969-09-09 Anchor Hocking Glass Corp Vacuum detecting apparatus for sealed containers
US3633742A (en) * 1970-07-01 1972-01-11 Continental Can Co Method and apparatus for classifying and sorting closure caps
US3700101A (en) * 1971-05-18 1972-10-24 Aluminum Co Of America Container inspection apparatus
US3991622A (en) * 1973-11-05 1976-11-16 Hisanao Aihara Apparatus for measuring airtightness of sealed body
US4313171A (en) * 1978-07-08 1982-01-26 Toyo Seikan Kaisha, Ltd. Internal pressure determining method and system for hermetically sealed containers using electromagnetic induction
US4188819A (en) * 1978-12-15 1980-02-19 Campbell Soup Company Method and apparatus for sensing gas pressure in a container
US4306448A (en) * 1979-12-10 1981-12-22 The West Company Apparatus, method and system for determining the integrity of sealed containers
US4315427A (en) * 1980-05-12 1982-02-16 The West Company Apparatus, method and system for determining the integrity of sealed containers
US4510857A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Container recycling apparatus having shock mounted manually rotatable carrier
US4510860A (en) * 1983-12-08 1985-04-16 Aluminum Company Of America Latching mechanism for manually rotatable carrier in apparatus for processing recyclable containers
US4512253A (en) * 1983-12-08 1985-04-23 Aluminum Company Of America Apparatus for processing recyclable containers
US4519306A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Process for recycling containers
US4519307A (en) * 1983-12-08 1985-05-28 Aluminum Company Of America Container recycling apparatus using scanning means to read code markings on containers
US4526096A (en) * 1983-12-08 1985-07-02 Aluminum Company Of America Apparatus for processing used containers having improved crusher means
US4558775A (en) * 1983-12-08 1985-12-17 Aluminum Company Of America Apparatus for passive analysis of containers to determine acceptability for recycling
FR2596153A1 (fr) * 1986-03-18 1987-09-25 Tronyx Procede et dispositif de controle du vide dans des recipients notamment a conserve
US5033287A (en) * 1988-03-14 1991-07-23 Ajinomoto Co., Inc. Method for inspecting a sealing property of a plastic container
US4922746A (en) * 1988-05-25 1990-05-08 Benthos, Inc. Leak testing
US4901558A (en) * 1988-12-22 1990-02-20 Geo A. Hormel & Co. Seal integrity tester and method
US5111684A (en) * 1990-11-21 1992-05-12 Pack Systems Method and apparatus for leak testing packages
US5226316A (en) * 1992-03-20 1993-07-13 Oscar Mayer Foods Corporation Package leak detection
US5513516A (en) * 1992-05-01 1996-05-07 Visi-Pack, Inc. Method and apparatus for leak testing a container

Also Published As

Publication number Publication date
SE317208B (ja) 1969-11-10
DE1573737B2 (de) 1972-11-23
IL25558A (en) 1970-08-19
BE679268A (ja) 1966-10-10
GB1144181A (en) 1969-03-05
DE1573737A1 (de) 1972-01-05
ES325299A1 (es) 1967-02-16

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