CA1105417A - Ice dispenser - Google Patents
Ice dispenserInfo
- Publication number
- CA1105417A CA1105417A CA298,627A CA298627A CA1105417A CA 1105417 A CA1105417 A CA 1105417A CA 298627 A CA298627 A CA 298627A CA 1105417 A CA1105417 A CA 1105417A
- Authority
- CA
- Canada
- Prior art keywords
- ice
- bin
- rotor
- dispenser
- scoop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C5/00—Working or handling ice
- F25C5/20—Distributing ice
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Confectionery (AREA)
- Vending Machines For Individual Products (AREA)
Abstract
ABSTRACT
An ice dispenser is disclosed for dispensing ice from a storage bin by means of a rotor.
An ice dispenser is disclosed for dispensing ice from a storage bin by means of a rotor.
Description
¦' S P E C I F I C A T I O M
BACKGROUND OF THE INVENTION
1. Field of the Invention ! In one aspect, this invention relates to ice dispensers.
S i In a further aspect, this invention relates to ice storage and dispensing in home refrigerators.
BACKGROUND OF THE INVENTION
1. Field of the Invention ! In one aspect, this invention relates to ice dispensers.
S i In a further aspect, this invention relates to ice storage and dispensing in home refrigerators.
2. DescriPtion of the Prior Art I
Ice dispensers for dispensing ice through a chute on a refrigerator door are known. Such devices will dispense ice on demand and have gained acceptance in the marketplace. One such known dispenser has an ice container with a fixed dispensing ; chute. A screw auger is disposed longitudinally within the con-` tainer and moves the cubes to the dispensing chute when activatedE
I One example of an ice dispenser is shown in U. S.
Patent 3,798,923 issued to Pink, et al. This patent discloses I a dispenser having a mullion which forms a part of the storage ¦ compartment of the ice dispenser.
A further example of a prior art system is exemplified by U. S. Patent 3,968,906 issued to Kochendorfer, et al. This I ice dispenser has a storage bin with a chute and dispensing ¦ opening. An elongated ram is positioned withi~ the bin and ¦ adapted for reciprocal motion along the longitudinal axis of the ¦ bin to move ice within the bin to the dispensing area. Howe~er it is possible in certain of the prior art dispensers to activate the unit while the operator's hand is in the storage bin, such as ~ 54~7 76-CON-416 l l¦ during cleaning. The operator's hand could then be injured by exposed fast moving parts. This is particularly true of auger type dispensers because the augers often have sharp edges which I can pinch or cut fingers. Also, the fast-moving parts result 1 in a substantial amount of noise when the dispenser is operated.
I A further problem is a failure on the part of prior art ¦, devices to insure that ice in the bin is properly recycled within the storage bin. Therefore, the ice cubes can fuse together and I grow stale. This failure to recycle has necessitated cleaning ¦¦ of the bin from time to time to remove ice which is old, or breaking up the frozen cubes and mixing them with other ice in the storage bin.
Yet a further problem is the formation of ice chips ~ in cube dispensers. Ice chips from the cubes are produced in 1 substantial quantities during dispensing of ice cubes due to rapid movement of the cubes caused by the ice dispenser operating I at a high speed, and are dispensed by the dispenser even when j not desired.
SUMMAR~ OF THE INVENTIO~
I It is an object of this invention to provide an ice I dispenser which quickly dispenses ice with a minimum of chip ~ formation.
j It is a further object of this invention to provide an ice dispenser which will dispense ice on a rotating basis from a bin so as to prevent the cubes from freezing into a solid mass~
According to the present invention there is provided a dispenser for dispensing ice, the dispenser having bin means suitable for receiving and holding ice, the bin means including means defining a discharge port ~or delivering ice therethrough and scoop means operable to receive and direct the ice into the discharge port.
Rotor means is rotatably mounted in the bin means, the rotor means having gripping means operative upon rotation of the rotor means to receive ice from the bin means and move the ice circumferentially therewith and into the scoo~
m~ans. The rotor means includes hub means with flange means extending generally radially outwardly fxo~ the base of the hub means. Drive means is adapted for connection to a source of power and is operable upon activation to rotate the rotor means. Activation means is operable upon selective actuation by the user to activate the drive means.
According to one aspect of the invention, the scope means includes a deflecting member having an edge spaced closely adjacent and conforming to the hub means.
Another portion is spaced closely adjacent the gripping means and the deflecting member is effective for channelling ice into the discharge port and preventing ice from bypassing ~the scoop means.
According to ano-ther aspect of the present invention, the scoop means includes an upper panel member connected to the upper edge of the deflecting member and extending to the bin means for shielding and isolating the ice therein from the ice located immediately above the upper panel member.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings:
FIGURE 1 is a top view of one embodiment of this cbr/~ C
invention;
FIGURE 2 is a side view, in section, of FIGURE 1 taken along line 2-2; and FIGURE 3 is a second embodiment of this invention.
--3~--$~ cbr/~ ~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the accompanyi~g drawing and initially to FIGURES 1 and 2, an icemaker dasignated generally 10 has a ~ storage bin 12 firmly attached to a base member 14 which will i generally be a solid freezer shelf. The bin could be permanently attached by using rails attached to the shelf when such fastening is desired. The storage bin 12 can be placed so as to receive ice produced by an automatic ice maker such as those often found I in home refrigerators.
, The storage bin 12 has a discharge port 16 located at one end. The discharge port 16 is normally closed by a door 18 which is biased into the closed position by a spring 20, counter balancing a solenoid or other mechanical closure means. The door 1` is shown in a horizontal position; however, it could also be , pivoted at the top and be disposed in a vertical position. In either position, the door would prevPnt warm air from entering the storage bin. This allows the dispenser of this invention ¦ to operate without the use of complex closure mechanisms in the i refrigerator door.
I A removable rotor 22 is rotated by a driven shaft designated 1 24. The shaft rotates a pinion gear 26 engaging a drive gear 28 ¦ which, in the presently preferred practice, is disposed at right ¦ angles to the pinion 26. As gear 28 rotates, it drives a shaft ! 30 to which the removable rotor 22 is attached. The rotor can be I mated to the shaft 30 by various means~ one acceptable means being the provision of flat mating surfaces on the exterior of shaft 30 and the interior of rotor 22 which lock the rotor and shaft.
~ 7 76-CON-416 I .
As shown, the rotor 22 has radially extending vanes 32 I located at the upper end thereof. The lower end of the rotor ~2 ¦ opposite the vaned portion has a radially extending flange or platform 36 shown with a plurality of steps or teeth 38 on the I platform's upper surface. As the rotor ~2 rotates counterclock-1l wise, the teeth 38 grip the ice in the storage bin 12 and move i the ice into a removable scoop 40. The scoop has a guide 42 as shown fully in FIGURE 1, whlch directs ice into the channel 44 I within the scoop. The ice then passes through the door and is ¦I dispensed at the discharge port 16.
The bin 12 has a plurality of apertures 37 therein which allow ice chips to fall on to ~he shelf 14. This prevents ice chips from being dispensed and allows the accumulation of 1 chips until removal is convenient.
1 Attached to the rotor 22 is a removable wiper or spider 46 having four arms 48 extending generally radially therefrom, the spider being held in place by a nut 47. The arm~ 48 also tend to move the ice within the storage bin 12. The arms 48 also provide I a means whereby ice which is not dispensed is moved past the I scoop 40 and back into the storage area for recycling. The arms 48 also tend to break any clumps of ice which may have formed in the storage bin 12. It will be understood that although four arms 48 are shown in the figures, the spider 46 may have from one to eight arms and still function efficiently. The wiper is not necessary but is a preferred embodiment since it helps keep the ice from forming clumps and helps clear the area around the sc~op 40.
'` . ~ 7 6--coN--4 l 6 l i The drive mechanism 24 derives its power from a gear ; reduction train 52 powered by an electric motor 50. The gear reduction train 52 turns a shaft 54 which in turn moves pinion , 26. The shaft 54 has a coupling 55 comprising a male coupling 1 55a and a female coupling 55b. This coupling allows the bin and associated dispensing ports to be separated from the power source , when bin cleaning is indicated. After cleaning, the coupling 55 Z
¦~ is reunited and the dispenser is ready for further operation.
The shaft 54 is supported by two hangers 56 which depend downward ¦ from a slanting surface 58 of bin 12. The motor and speed IZ reduction train 52 determines the speed at which the pinion 26 Z
¦l rotates, the pinion being driven at a xate which turns the rotor at about 3 to 8 rpm, or 6.3 to 16.7 surface feet per minute at 1, the outside edge of the rotor platform.
15 l Shaft 54 also can be used to drive an agitator designated generally 60. The agitator 60 comprises an arm 66 with one end thereof pivotably mounted to the bin wall at 61. A cam 62 mounted on shaft 54 has one or more lobes thereon. The opposite end 63 of ar~ 66 has a cam follower 64 provided thereon which rides on the cam 62. As the shaft 54 .rotates, the cam ollower 64 and flat portion of arm 66 of agitator 60 oscillate in a vertical direction to break any clumps of ice which may form within the storage bin 12.
FI~URE 3 shGws a second embodiment wherein the rotor 22 is driven directly by an electric motor 70 with a gear reduction gear train. In this embodiment, an agitator 72 is moved by an 7~-C0~-416 oscillating lever arm 74 moun~ed intermediate the ends thereof , on a pivot 76 attached to the bin wall 12 structure. The lever ~ arm 74 has a cam follower 78 attached to the right-hand end in ¦ FIGURE 3 which engages a cam 80 on a vertically disposed drive shaft 82. The remainder of the system is structurally similar to the embodiment of FIGURES 1 and 2 and operates as described I hereinabove with reference to FIGURES 1 and 2.
j Further modifications and alterations will become obvious to those skilled in the art without departing from the spirit of ¦ this invention, and it is understood that this invention is not limited to the specific embodiments set forth hereinbefore but eAc mpasses that which i9 defined by the f~ll wing c1aims.
_7_
Ice dispensers for dispensing ice through a chute on a refrigerator door are known. Such devices will dispense ice on demand and have gained acceptance in the marketplace. One such known dispenser has an ice container with a fixed dispensing ; chute. A screw auger is disposed longitudinally within the con-` tainer and moves the cubes to the dispensing chute when activatedE
I One example of an ice dispenser is shown in U. S.
Patent 3,798,923 issued to Pink, et al. This patent discloses I a dispenser having a mullion which forms a part of the storage ¦ compartment of the ice dispenser.
A further example of a prior art system is exemplified by U. S. Patent 3,968,906 issued to Kochendorfer, et al. This I ice dispenser has a storage bin with a chute and dispensing ¦ opening. An elongated ram is positioned withi~ the bin and ¦ adapted for reciprocal motion along the longitudinal axis of the ¦ bin to move ice within the bin to the dispensing area. Howe~er it is possible in certain of the prior art dispensers to activate the unit while the operator's hand is in the storage bin, such as ~ 54~7 76-CON-416 l l¦ during cleaning. The operator's hand could then be injured by exposed fast moving parts. This is particularly true of auger type dispensers because the augers often have sharp edges which I can pinch or cut fingers. Also, the fast-moving parts result 1 in a substantial amount of noise when the dispenser is operated.
I A further problem is a failure on the part of prior art ¦, devices to insure that ice in the bin is properly recycled within the storage bin. Therefore, the ice cubes can fuse together and I grow stale. This failure to recycle has necessitated cleaning ¦¦ of the bin from time to time to remove ice which is old, or breaking up the frozen cubes and mixing them with other ice in the storage bin.
Yet a further problem is the formation of ice chips ~ in cube dispensers. Ice chips from the cubes are produced in 1 substantial quantities during dispensing of ice cubes due to rapid movement of the cubes caused by the ice dispenser operating I at a high speed, and are dispensed by the dispenser even when j not desired.
SUMMAR~ OF THE INVENTIO~
I It is an object of this invention to provide an ice I dispenser which quickly dispenses ice with a minimum of chip ~ formation.
j It is a further object of this invention to provide an ice dispenser which will dispense ice on a rotating basis from a bin so as to prevent the cubes from freezing into a solid mass~
According to the present invention there is provided a dispenser for dispensing ice, the dispenser having bin means suitable for receiving and holding ice, the bin means including means defining a discharge port ~or delivering ice therethrough and scoop means operable to receive and direct the ice into the discharge port.
Rotor means is rotatably mounted in the bin means, the rotor means having gripping means operative upon rotation of the rotor means to receive ice from the bin means and move the ice circumferentially therewith and into the scoo~
m~ans. The rotor means includes hub means with flange means extending generally radially outwardly fxo~ the base of the hub means. Drive means is adapted for connection to a source of power and is operable upon activation to rotate the rotor means. Activation means is operable upon selective actuation by the user to activate the drive means.
According to one aspect of the invention, the scope means includes a deflecting member having an edge spaced closely adjacent and conforming to the hub means.
Another portion is spaced closely adjacent the gripping means and the deflecting member is effective for channelling ice into the discharge port and preventing ice from bypassing ~the scoop means.
According to ano-ther aspect of the present invention, the scoop means includes an upper panel member connected to the upper edge of the deflecting member and extending to the bin means for shielding and isolating the ice therein from the ice located immediately above the upper panel member.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings:
FIGURE 1 is a top view of one embodiment of this cbr/~ C
invention;
FIGURE 2 is a side view, in section, of FIGURE 1 taken along line 2-2; and FIGURE 3 is a second embodiment of this invention.
--3~--$~ cbr/~ ~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the accompanyi~g drawing and initially to FIGURES 1 and 2, an icemaker dasignated generally 10 has a ~ storage bin 12 firmly attached to a base member 14 which will i generally be a solid freezer shelf. The bin could be permanently attached by using rails attached to the shelf when such fastening is desired. The storage bin 12 can be placed so as to receive ice produced by an automatic ice maker such as those often found I in home refrigerators.
, The storage bin 12 has a discharge port 16 located at one end. The discharge port 16 is normally closed by a door 18 which is biased into the closed position by a spring 20, counter balancing a solenoid or other mechanical closure means. The door 1` is shown in a horizontal position; however, it could also be , pivoted at the top and be disposed in a vertical position. In either position, the door would prevPnt warm air from entering the storage bin. This allows the dispenser of this invention ¦ to operate without the use of complex closure mechanisms in the i refrigerator door.
I A removable rotor 22 is rotated by a driven shaft designated 1 24. The shaft rotates a pinion gear 26 engaging a drive gear 28 ¦ which, in the presently preferred practice, is disposed at right ¦ angles to the pinion 26. As gear 28 rotates, it drives a shaft ! 30 to which the removable rotor 22 is attached. The rotor can be I mated to the shaft 30 by various means~ one acceptable means being the provision of flat mating surfaces on the exterior of shaft 30 and the interior of rotor 22 which lock the rotor and shaft.
~ 7 76-CON-416 I .
As shown, the rotor 22 has radially extending vanes 32 I located at the upper end thereof. The lower end of the rotor ~2 ¦ opposite the vaned portion has a radially extending flange or platform 36 shown with a plurality of steps or teeth 38 on the I platform's upper surface. As the rotor ~2 rotates counterclock-1l wise, the teeth 38 grip the ice in the storage bin 12 and move i the ice into a removable scoop 40. The scoop has a guide 42 as shown fully in FIGURE 1, whlch directs ice into the channel 44 I within the scoop. The ice then passes through the door and is ¦I dispensed at the discharge port 16.
The bin 12 has a plurality of apertures 37 therein which allow ice chips to fall on to ~he shelf 14. This prevents ice chips from being dispensed and allows the accumulation of 1 chips until removal is convenient.
1 Attached to the rotor 22 is a removable wiper or spider 46 having four arms 48 extending generally radially therefrom, the spider being held in place by a nut 47. The arm~ 48 also tend to move the ice within the storage bin 12. The arms 48 also provide I a means whereby ice which is not dispensed is moved past the I scoop 40 and back into the storage area for recycling. The arms 48 also tend to break any clumps of ice which may have formed in the storage bin 12. It will be understood that although four arms 48 are shown in the figures, the spider 46 may have from one to eight arms and still function efficiently. The wiper is not necessary but is a preferred embodiment since it helps keep the ice from forming clumps and helps clear the area around the sc~op 40.
'` . ~ 7 6--coN--4 l 6 l i The drive mechanism 24 derives its power from a gear ; reduction train 52 powered by an electric motor 50. The gear reduction train 52 turns a shaft 54 which in turn moves pinion , 26. The shaft 54 has a coupling 55 comprising a male coupling 1 55a and a female coupling 55b. This coupling allows the bin and associated dispensing ports to be separated from the power source , when bin cleaning is indicated. After cleaning, the coupling 55 Z
¦~ is reunited and the dispenser is ready for further operation.
The shaft 54 is supported by two hangers 56 which depend downward ¦ from a slanting surface 58 of bin 12. The motor and speed IZ reduction train 52 determines the speed at which the pinion 26 Z
¦l rotates, the pinion being driven at a xate which turns the rotor at about 3 to 8 rpm, or 6.3 to 16.7 surface feet per minute at 1, the outside edge of the rotor platform.
15 l Shaft 54 also can be used to drive an agitator designated generally 60. The agitator 60 comprises an arm 66 with one end thereof pivotably mounted to the bin wall at 61. A cam 62 mounted on shaft 54 has one or more lobes thereon. The opposite end 63 of ar~ 66 has a cam follower 64 provided thereon which rides on the cam 62. As the shaft 54 .rotates, the cam ollower 64 and flat portion of arm 66 of agitator 60 oscillate in a vertical direction to break any clumps of ice which may form within the storage bin 12.
FI~URE 3 shGws a second embodiment wherein the rotor 22 is driven directly by an electric motor 70 with a gear reduction gear train. In this embodiment, an agitator 72 is moved by an 7~-C0~-416 oscillating lever arm 74 moun~ed intermediate the ends thereof , on a pivot 76 attached to the bin wall 12 structure. The lever ~ arm 74 has a cam follower 78 attached to the right-hand end in ¦ FIGURE 3 which engages a cam 80 on a vertically disposed drive shaft 82. The remainder of the system is structurally similar to the embodiment of FIGURES 1 and 2 and operates as described I hereinabove with reference to FIGURES 1 and 2.
j Further modifications and alterations will become obvious to those skilled in the art without departing from the spirit of ¦ this invention, and it is understood that this invention is not limited to the specific embodiments set forth hereinbefore but eAc mpasses that which i9 defined by the f~ll wing c1aims.
_7_
Claims (6)
- THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
Claim 1. A dispenser for dispensing ice, comprising:
(a) bin means suitable for receiving and holding ice, said bin means including, (i) means defining a discharge port for delivering ice therethrough, (ii) scoop means operable to receive and direct the ice into said discharge port;
(b) rotor means rotatably mounted in said bin means, said rotor means having gripping means operative upon rotation of said rotor means to receive ice from said bin means and move said ice circum-ferentially therewith and into said scoop means, said rotor means including, (i) hub means, (ii) flange means extending generally radially outwardly from the base of said hub means;
(c) said scoop means including a deflecting member having an edge spaced closely adjacent and conforming to said hub means, and another portion spaced closely adjacent said gripping means, said deflecting member effective for channeling ice into said discharge port and preventing ice from bypassing said scoop means;
(d) drive means adapted for connection to a source of power and operable upon activation to rotate said rotor means, and (e) activation means operable upon selective actuation by the user to activate said drive means. - Claim 2. A dispenser for dispensing ice, comprising:
(a) bin means suitable for receiving and holding ice, said bin means including, (i) means defining a discharge port for delivering ice therethrough;
(ii) scoop means operable to receive and direct ice into said discharge port;
(b) rotor means rotatably mounted in said bin means, said rotor means having gripping means operative upon rotation of said rotor means to receive ice from said bin means and move said ice circumferentially therewith and toward said scoop means, said rotor means including, (i) hub means, (ii) flange means extending generally radially outwardly from the base of said hub means;
(c) said scoop means including (i) a deflecting member having a front edge portion spaced closely adjacent and conforming to said hub means, (ii) an upper panel member connected to the upper edge of said deflecting member and extending to said bin means for shielding and isolating the ice therein from the ice located immediately above said upper panel member;
(d) drive means adapted for connection to a source of power and operable upon activation to rotate said rotor means; and (e) activation means operable upon selective actuation by the user to activate said drive means. - Claim 3. The dispenser of claim 1 or 2, wherein said bin means under said flange means defines an opening for permitting ice chips to pass therethrough to a location exteriorly of said bin means.
- Claim 4. The dispenser of claim 1 or 2, wherein said rotor means includes a wiper operable upon movement of said rotor means to move ice which is not directed into said scoop means about said bin means for recycling.
- Claim 5. The dispenser of claim 1 or 2, wherein said bin means includes means operable to aid gravity flow of ice into contact with said rotor means.
- Claim 6. The dispenser as defined in claim 2, wherein said deflecting member includes a bottom edge spaced closely adjacent said gripping means, said deflecting member effective for channeling ice into said discharge port and preventing ice from bypassing said scoop means.
Claim 7. The dispenser of claim 1 or 2, wherein said rotor means is substantially vertically disposed in said bin means.
Claim 8. The dispenser of claim 1 or 2, wherein, (a) said rotor means is substantially vertically disposed in said bin means;
(b) said bin means includes an inclined bottom surface portion which slants downwardly toward said rotor means and further including (c) agitator means disposed in said bin means, said agitator means including an elongated arm pivotally mounted at one end thereof to said inclined bottom surface and operably connected to said drive means at the other end thereof for oscillatory motion of said arm about said pivotal mounting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78422677A | 1977-04-04 | 1977-04-04 | |
| US784,226 | 1985-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1105417A true CA1105417A (en) | 1981-07-21 |
Family
ID=25131748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA298,627A Expired CA1105417A (en) | 1977-04-04 | 1978-03-10 | Ice dispenser |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1105417A (en) |
| DE (1) | DE2812853A1 (en) |
| FR (1) | FR2386790A1 (en) |
| GB (1) | GB1597086A (en) |
| IT (1) | IT1093711B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8606427D0 (en) * | 1986-03-15 | 1986-04-23 | Wagner M | Dispensers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3075363A (en) * | 1960-12-16 | 1963-01-29 | Freez King Corp | Ice dispensing attachment for beverage dispensing machine |
| US3217940A (en) * | 1962-07-25 | 1965-11-16 | Joseph B Fahn | Ice cube dispenser |
| US3881642A (en) * | 1973-09-10 | 1975-05-06 | King Seeley Thermos Co | Ice dispensing apparatus |
-
1978
- 1978-03-10 CA CA298,627A patent/CA1105417A/en not_active Expired
- 1978-03-15 GB GB10308/78A patent/GB1597086A/en not_active Expired
- 1978-03-23 DE DE19782812853 patent/DE2812853A1/en not_active Withdrawn
- 1978-03-31 FR FR7809579A patent/FR2386790A1/en not_active Withdrawn
- 1978-04-04 IT IT21986/78A patent/IT1093711B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| GB1597086A (en) | 1981-09-03 |
| IT1093711B (en) | 1985-07-26 |
| DE2812853A1 (en) | 1978-10-12 |
| FR2386790A1 (en) | 1978-11-03 |
| IT7821986A0 (en) | 1978-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |