CA2070993C - Battery housing assembly with integral limited travel guide rails - Google Patents
Battery housing assembly with integral limited travel guide railsInfo
- Publication number
- CA2070993C CA2070993C CA002070993A CA2070993A CA2070993C CA 2070993 C CA2070993 C CA 2070993C CA 002070993 A CA002070993 A CA 002070993A CA 2070993 A CA2070993 A CA 2070993A CA 2070993 C CA2070993 C CA 2070993C
- Authority
- CA
- Canada
- Prior art keywords
- battery
- battery housing
- disposed
- housing assembly
- guide rails
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3883—Arrangements for mounting batteries or battery chargers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Computer Hardware Design (AREA)
- Computer Networks & Wireless Communication (AREA)
- Battery Mounting, Suspending (AREA)
- Telephone Set Structure (AREA)
- Fodder In General (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
A battery housing base (300) with an integral, sliding channel mechanism (507) for attaching a battery to portable electronic equipment (102) is disclosed. The slide-on battery (105) is captivated by limited travel guide rails (307 through 312) within the sliding channels (507) along each opposite edge of the mating surface (302) of the battery housing base (300). Indentations (313 through 316) are disposed between neighboring limited travel guide rails (307 through 312). The indentations (313 through 316) enable the limited travel guide rails (307 through 312) to be manufactured using a single shot injection, straight pull ejection molding process and to be easily attached to the portable electronic equipment (102). The single shot injection mold process controls all critical interface dimensions on the battery housing base (300) for proper attachment to the portable electronic equipment (102). The critical interface dimensions are disassociated from the attachment of a battery housing base (300) to the battery housing cover (202).
Description
. ~ 1 2070993 BATTERY HOUSING ~ F.MRLy WITH INTEGRAL
LIMITED TRAVEL GUIDE RAILS
Field of the Invention This invention relates generally to battery housing apparatus and more particularly to a battery housing base with an integral, limited travel, sliding ~h~nnel merhs~ni~m 10 having an indentation disposed between neighhoring guide rails.
Background of the Invention Miniature electronic equipment is often portable in nature, and, as such, requires a portable source of power such as a battery. A battery supply may be conveniently ~tt~rhe~l to the housing of the mini~ture electronic equipment and make 2 0 electronic contact by way of a conventional connector. To make battery ~h~n~ing easier, mech~ni~m~ have been devised to enable the user to easily fli~connect the spent battery and replace it with a freshly charged battery. It has been ~ V~ll desirable to securely affix the det~h~ble battery to the 2 5 miniature electronic equipment by way of a sliding channel and l~tching mech~ni~m As the equipment becomes smaller, however, it has become incre?.~ingly difficult to control the dimensions of the features critical to the interface between the battery and the electronic equipment. Critical interface 3 0 features include the sliding ~h~nnel~, latch and battery contacts.
Typically, battery housings are ~semhlies having a housing base and a housing cover which are joined to each other to encomp~cs electrochçmical cells cont~ine~l within the ~ssemhly. The sliding rh~nnel features are often designed into the battery housing Pssemhly as a comhin~tion of features in the housing base and the housing cover. Variation in the 5 ~csemhly process ~tt~rhing the base to the cover sometimes results in variation in the fiimen~ions of the sliding channels.
Variation in the tlimçn~ions of the sliding ch~nnel~ causes the position of the latch and battery contacts on the battery housing to vary relative to the slides. As a result, the battery may not fit 1 0 or function properly when ~ttached to the electronic equipm~nt, Thus, it would be advantageous to m~nllfact~lre all the critical interface features as part of the base so that their ~lim~n~jon~ relative to each other may be controlled.
The difficulty in manufacturing all the critical interface 1 5 features in the battery housing base arises in creating the guide rails for the sliding rh~nnel~. The sliding channel usually has three inside surfaces forming a "U" shape. The guide rails are usually elongated protrusions disposed at intervals on one of the two parallel side surfaces inside the 2 0 ch~nnel. The bottom surface of the channel is usually disposed perpendicularly to the two side surfaces. The guide rails are parallel to the bottom surface. Using conventional molding processes, the sliding channel~, latch and battery cont~ct receptacles are molded into the battery housing base 2 5 anticipating a straight pull ejection from the tooling cavity.
The guide rails in the sliding ch~nnels~ however, are position perpendicularly to the direction of ejection from the tooling cavity.
One approach that has been considered involves insert 3 0 molding. Using this process, the sides of the sliding lh~nnçl~
including the guide rails are molded separately first then inserted into a second mold which forms the rem~ining two sides of the sliding ch~nnel and the complete molded battery 3 207099~
housing base. The problem with this a~loach is that it is both labor and time intensive to complete the two stage molding process.
Another a~,oach which has been considered involves 5 cc~molfling. Using this process, the side of the sliding ch~nnPls including the guide rails are mol~le-1 separately in a first cycle. One part of the tool is removed and replaced with a secQn~l part which has the rçm~ining features of the sliding rh~nnel and the complete battery housing base. A second 1 0 mold cycle is initiated to produce the completed battery housing base. The problem with this approach is that there are no ~llt~m~ted comolding tools available which mold the first stage in a straight pull direction and the second stage in a pull direction perpendicularly to the first stage pull.
1 5 Developing a speci~li7e~l comolding process for a battery housing base would be expensive.
Thus, there is a strong need for a battery housing base with an integral, limited travel, sliding rh~nnel merh?.ni~m having guide rails which can easily be manufactured, has 20 controlled critical interface rlimp~nRions and has its critical interface ~imen~ions disassociated from the att~chment of a battery housing cover.
LIMITED TRAVEL GUIDE RAILS
Field of the Invention This invention relates generally to battery housing apparatus and more particularly to a battery housing base with an integral, limited travel, sliding ~h~nnel merhs~ni~m 10 having an indentation disposed between neighhoring guide rails.
Background of the Invention Miniature electronic equipment is often portable in nature, and, as such, requires a portable source of power such as a battery. A battery supply may be conveniently ~tt~rhe~l to the housing of the mini~ture electronic equipment and make 2 0 electronic contact by way of a conventional connector. To make battery ~h~n~ing easier, mech~ni~m~ have been devised to enable the user to easily fli~connect the spent battery and replace it with a freshly charged battery. It has been ~ V~ll desirable to securely affix the det~h~ble battery to the 2 5 miniature electronic equipment by way of a sliding channel and l~tching mech~ni~m As the equipment becomes smaller, however, it has become incre?.~ingly difficult to control the dimensions of the features critical to the interface between the battery and the electronic equipment. Critical interface 3 0 features include the sliding ~h~nnel~, latch and battery contacts.
Typically, battery housings are ~semhlies having a housing base and a housing cover which are joined to each other to encomp~cs electrochçmical cells cont~ine~l within the ~ssemhly. The sliding rh~nnel features are often designed into the battery housing Pssemhly as a comhin~tion of features in the housing base and the housing cover. Variation in the 5 ~csemhly process ~tt~rhing the base to the cover sometimes results in variation in the fiimen~ions of the sliding channels.
Variation in the tlimçn~ions of the sliding ch~nnel~ causes the position of the latch and battery contacts on the battery housing to vary relative to the slides. As a result, the battery may not fit 1 0 or function properly when ~ttached to the electronic equipm~nt, Thus, it would be advantageous to m~nllfact~lre all the critical interface features as part of the base so that their ~lim~n~jon~ relative to each other may be controlled.
The difficulty in manufacturing all the critical interface 1 5 features in the battery housing base arises in creating the guide rails for the sliding rh~nnel~. The sliding channel usually has three inside surfaces forming a "U" shape. The guide rails are usually elongated protrusions disposed at intervals on one of the two parallel side surfaces inside the 2 0 ch~nnel. The bottom surface of the channel is usually disposed perpendicularly to the two side surfaces. The guide rails are parallel to the bottom surface. Using conventional molding processes, the sliding channel~, latch and battery cont~ct receptacles are molded into the battery housing base 2 5 anticipating a straight pull ejection from the tooling cavity.
The guide rails in the sliding ch~nnels~ however, are position perpendicularly to the direction of ejection from the tooling cavity.
One approach that has been considered involves insert 3 0 molding. Using this process, the sides of the sliding lh~nnçl~
including the guide rails are molded separately first then inserted into a second mold which forms the rem~ining two sides of the sliding ch~nnel and the complete molded battery 3 207099~
housing base. The problem with this a~loach is that it is both labor and time intensive to complete the two stage molding process.
Another a~,oach which has been considered involves 5 cc~molfling. Using this process, the side of the sliding ch~nnPls including the guide rails are mol~le-1 separately in a first cycle. One part of the tool is removed and replaced with a secQn~l part which has the rçm~ining features of the sliding rh~nnel and the complete battery housing base. A second 1 0 mold cycle is initiated to produce the completed battery housing base. The problem with this approach is that there are no ~llt~m~ted comolding tools available which mold the first stage in a straight pull direction and the second stage in a pull direction perpendicularly to the first stage pull.
1 5 Developing a speci~li7e~l comolding process for a battery housing base would be expensive.
Thus, there is a strong need for a battery housing base with an integral, limited travel, sliding rh~nnel merh?.ni~m having guide rails which can easily be manufactured, has 20 controlled critical interface rlimp~nRions and has its critical interface ~imen~ions disassociated from the att~chment of a battery housing cover.
4 2070g9'3 Sllmm~ry of the Invention A battery housing ~ssçmhly for portable electronic eqllipmant having at least first and second mP.t;ng housing 5 portions enclosing electrorhamical cells therebetween. The first housing portion having at least one ~tt~ching surface by which the battery housing ~sçmhly is det~rh~hly connected to the portable electronic equirmsnt. The battery housing assembly comprises at least one rh~nnel disposed in the att~çhing surface 1 0 of the first housing portion.
At least one rh~nnel further comprises a first surface ~lisrosefl; at least one elongated protrusion on the first surface and elrtsn-line along the first surface parallel to the att~rhing surface; and at least one indentation, at least as long as the 1 5 elongated protrusion, disposed in at least a portion of the first surface adjoined to at least one end of the elongated protrusion.
Brief Description of the Drawings FIG. 1 is an isometric drawing of a hand-held portable radiotelephone which may employ the present invention.
FIGS. 2A and 2B are drawings of a battery housing (FIG.
2A) and portable radiotelephone (FIG. 2B) in which the battery 2 5 has been detached from the portable radiotelephone.
FIG. 3 is a view of the m~ting service of the battery housing base of the battery of FIG. 2A showing the integral latch, electrical contacts and reduced travel g~ude rails.
FIG. 4 is a cross sectional view in perspective of a portion 3 0 of the battery housing base shown in FIG 3.
FIG. 5 is a cross-sectional view of the battery housing base and cover of FIG. 2A before they are ~qssemhled to each other.
2(J70993 Description of a Preferred Embodiment A portable radiotelephone adapted to be used in a cellular radiotelephone system is shown in FIG. 1. The present invention may be employed in such a portable radiotelephone as well as in other mini~tllre electronic eq~ipment The illustrated portable unit consists of two external portions, a body portion 102 and a flip elèment portion 104, in addition to a det~- hAhle battery 105. The drawing of FIG. 1 shows the flip 1 0 element 104 in an "open" position such that a user of the portable unit may listen via earpiece 106 and may speak into a microphone 107. A telephone dial, or keypad, 110 consists of a plurality of buttons numbered one through zero, #, and *, in a fAmiliAr telephone arrangement. The keypad 110 also has additional function buttons such as "send", "end", "on/off', and other buttons associated with telephone number recall.
Since the portable radiotelephone of FIG. 1 is indeed portable, some source of electrical energy is necessary to power the electrical functions of this radiotelephone. The source of 2 0 this electrical energy is a battery 105 which is typically implemented as a rechargeable electrochemical cell or cells.
It is ç~pected that the user will be able to either recharge the battery while the battery is att~he-l to the radio or detach the battery from the radio and charge it separately.
2 5 Referring now to FIG. 2A, the configuration of the det~h~ble battery 105 can be apprehçntle~l in the condition where the battery 105 is detached from the portable radiotelephone of FIG. 1. In the preferred embo~3iment of the present invention, the battery housing consists of two halves, a 3 0 base 300 in FIG. 3 and a cover 202 in FIG. 2A, which are perm~nently affixed together. A conventional set of electrochemical battery cells (not shown) may be sandwiched between and captivated by the two plastic housing portions which may be secured together to form an integral battery housing p~k~ee.
An integral latch merhP~ni~m 201 is integrally molded on the battery housing base. The latch meçh~niRm is molded into 5 the inside half of the plastic housing. To disengage the battery 105 from the portable radiotelephone 102, the latch merh~ni~m 201 is pushed at the portion visible in FIG. 2A thereby causing a torsion beam (not shown) to rotate and cause a catch (not shown) to retract from a pocket 212 in the portable 1 0 radiotelephone 102. (The portable radiotelephone 102, in a rear elevation view with the battery removed, is shown in FIG. 2B).
This action rele?.~es the battery from its locked position and enables the battery housing 105 to be removed from the portable radiotelephone 102. The m~tine surface of the portable 1 5 radiotelephone 102 has a pocket or indented slot 212 which is so formed and positioned that it engages the catch portion of latch mel~h~ni~m 201 when the battery housing 105 is located in its fully attached position. The battery housing is thereby locked in place. Guide rails 213 through 218 extend from a surface of 2 0 the portable radiotelephone housing 102 and are disposed opposite simil~r guide rails on the battery housing 105. The guide rails of the battery housing 105 are capt*ated beneath guide rails 213 through 218 of the portable radiotelephone housing 102 when the battery housing 105 is in its operational 2 5 (and locked) position. The optional position is, of course, when elect~cal contacts 225 have contacted mating contacts 325 (not visible) of the battery housing 105.
Lateral slots 233 and 235 in FIG. 2A on opposite sides of the battery housing ~semhly 105 are located in a position such 3 0 that the battery alone or the battery and portable radiotelephone together may slide into a common battery charging unit and be properly oriented relative to the battery charging contacts 239.
At least one rh~nnel further comprises a first surface ~lisrosefl; at least one elongated protrusion on the first surface and elrtsn-line along the first surface parallel to the att~rhing surface; and at least one indentation, at least as long as the 1 5 elongated protrusion, disposed in at least a portion of the first surface adjoined to at least one end of the elongated protrusion.
Brief Description of the Drawings FIG. 1 is an isometric drawing of a hand-held portable radiotelephone which may employ the present invention.
FIGS. 2A and 2B are drawings of a battery housing (FIG.
2A) and portable radiotelephone (FIG. 2B) in which the battery 2 5 has been detached from the portable radiotelephone.
FIG. 3 is a view of the m~ting service of the battery housing base of the battery of FIG. 2A showing the integral latch, electrical contacts and reduced travel g~ude rails.
FIG. 4 is a cross sectional view in perspective of a portion 3 0 of the battery housing base shown in FIG 3.
FIG. 5 is a cross-sectional view of the battery housing base and cover of FIG. 2A before they are ~qssemhled to each other.
2(J70993 Description of a Preferred Embodiment A portable radiotelephone adapted to be used in a cellular radiotelephone system is shown in FIG. 1. The present invention may be employed in such a portable radiotelephone as well as in other mini~tllre electronic eq~ipment The illustrated portable unit consists of two external portions, a body portion 102 and a flip elèment portion 104, in addition to a det~- hAhle battery 105. The drawing of FIG. 1 shows the flip 1 0 element 104 in an "open" position such that a user of the portable unit may listen via earpiece 106 and may speak into a microphone 107. A telephone dial, or keypad, 110 consists of a plurality of buttons numbered one through zero, #, and *, in a fAmiliAr telephone arrangement. The keypad 110 also has additional function buttons such as "send", "end", "on/off', and other buttons associated with telephone number recall.
Since the portable radiotelephone of FIG. 1 is indeed portable, some source of electrical energy is necessary to power the electrical functions of this radiotelephone. The source of 2 0 this electrical energy is a battery 105 which is typically implemented as a rechargeable electrochemical cell or cells.
It is ç~pected that the user will be able to either recharge the battery while the battery is att~he-l to the radio or detach the battery from the radio and charge it separately.
2 5 Referring now to FIG. 2A, the configuration of the det~h~ble battery 105 can be apprehçntle~l in the condition where the battery 105 is detached from the portable radiotelephone of FIG. 1. In the preferred embo~3iment of the present invention, the battery housing consists of two halves, a 3 0 base 300 in FIG. 3 and a cover 202 in FIG. 2A, which are perm~nently affixed together. A conventional set of electrochemical battery cells (not shown) may be sandwiched between and captivated by the two plastic housing portions which may be secured together to form an integral battery housing p~k~ee.
An integral latch merhP~ni~m 201 is integrally molded on the battery housing base. The latch meçh~niRm is molded into 5 the inside half of the plastic housing. To disengage the battery 105 from the portable radiotelephone 102, the latch merh~ni~m 201 is pushed at the portion visible in FIG. 2A thereby causing a torsion beam (not shown) to rotate and cause a catch (not shown) to retract from a pocket 212 in the portable 1 0 radiotelephone 102. (The portable radiotelephone 102, in a rear elevation view with the battery removed, is shown in FIG. 2B).
This action rele?.~es the battery from its locked position and enables the battery housing 105 to be removed from the portable radiotelephone 102. The m~tine surface of the portable 1 5 radiotelephone 102 has a pocket or indented slot 212 which is so formed and positioned that it engages the catch portion of latch mel~h~ni~m 201 when the battery housing 105 is located in its fully attached position. The battery housing is thereby locked in place. Guide rails 213 through 218 extend from a surface of 2 0 the portable radiotelephone housing 102 and are disposed opposite simil~r guide rails on the battery housing 105. The guide rails of the battery housing 105 are capt*ated beneath guide rails 213 through 218 of the portable radiotelephone housing 102 when the battery housing 105 is in its operational 2 5 (and locked) position. The optional position is, of course, when elect~cal contacts 225 have contacted mating contacts 325 (not visible) of the battery housing 105.
Lateral slots 233 and 235 in FIG. 2A on opposite sides of the battery housing ~semhly 105 are located in a position such 3 0 that the battery alone or the battery and portable radiotelephone together may slide into a common battery charging unit and be properly oriented relative to the battery charging contacts 239.
7 2070g93 The surface 302 of the battery housing base 300 which mates to the portable radiotelephone of FIG. 2B i8 shown in the elevation view of the m~ting surface of FIG. 3. The housing base 300 generally includes the latch mech~ni~m 210, sliding chS~nnels 507, battery cont~ct receptacles 325 and in(lçnt~;on~
313 through 316. The latch me~h~nism 201 i8 seen in greater detail in FIG. 3 and it can be perceived how the catch 301 rotates about the torsion bar 303 when the button portion 305 is pressed by the user to remove the battery. Such a button 1 0 pressing in a direction out of the plane of the page of FIG. 3 (and into indented area 227 of the portable radiotelephone housing 102) causes torsion bar 303 to rotate and move catch 301 into the plane of the page of FIG. 3. This motion disengages the catch 301 from slot 212 (shown in FIG.2B) 1 5 thereby unlocking the battery housing and enabling the user to slide the battery along g ude rails 307 through 312. Shortened guide rails 307 through 312, disposed on the parallel surfaces of each rh~nnel facing each other, with gaps in between each, enable secure fastening of the battery housing 105 to the 2 0 portable radiotelephone housing 102 the entire length of the battery housing 105 while allowing a short travel displ~cement of the battery housing before the battery housing may be disengaged and removed from the portable radiotelephone 102. When guide rails 307 through 312 are fully 2 5 disengaged from the portable radiotelephone housing, the battery electrical contacts 325 are disengaged from the battery input electrical contacts 225 on the portable radiotelephone housing. Once guide rails 307 through 312 have moved past the opposing g~ude rails 213 through 218 on the portable 3 0 radiotelephone housing 102, the battery 105 may be lifted clear of the portable radiotelephone 102.
In the preferred embo-liment, the guide rails 307 through 312 are bullet shaped (better illustrated in FIG. 4) but in - 8 20709~3 alternate embo-liment~ they may resemble other shapes to f ccompli~h the same function. The guide rails 307 through 312 must be elongated and parallel to the ~tt~chin~ surface 302 of the battery housing 300 and their m~tin~ surfaces must be 5 coplanar with the m~tin~ surfaces of the opposing guide rails 213 through 218 on the portable radiotelephone housing 102.
A feature of the l"efelled embo~liment of the present invention is an in~ant~tion in the gap between two n~iehhoring guide rails. The battery housing base includes four such 1 0 indentations 313 through 316. In the preferred embo-liment"
the in~l~nt~tions form a slight recessed step in the three surfaces of the sliding ch~nn~l 507. The in-lerlt~tions may not be limited to a recessed step; they may also a recessed slope or any shape which is lower than the plane on which the 1 5 protrusions are disposed. The in~nt~tions have two purposes. The first purpose is to enable the guide rails 307 through 312 to be manllf~rt~lred as an integral part of the housing base 300. The man1lf~ctl-ring process uses a single shot injection, straight pull ejection molding process. This 2 0 manufacturing process is inexpensive and has a fast molding cycle time. An advantage of molding the guide rails 307 through 312 as part of the battery housing base 300 is that critical interface rlimP!n~ions between the battery housing base 300 and the portable radiotelephone 102 can be controlled. It is 2 5 important that the relative dimensions between the guide rails 307 through 312, the latch mPrh~niam 201, and the battery cont~qct receptacles 325 be controlled to ensure proper fit and function of the battery 105 to the portable radiotelephone housing 102. Another advantage of having all critical 3 0 dimensions controlled on the battery housing base 300 is that the critical ~1imen~ions are not affected by the att~hm~nt of the battery housing cover 202.
- 20~0993 g The seconA purpose of the intl~nt~t;onc 313 through 316 on the battery holl~ing base 300 is to enable easy ~csemhly of the battery housing 105 to the portable radiotelephone housing 102.
The indentations 313 through 316 increase the width of the 5 sliding rh~nnel in the gap between the g ude rails on the battery housing base 300. The increased width allows the guide rails 307 through 312 on the portable radiotelephone housing 102 to be inserted into the gap with less restriction.
The guide rails 307 through 312 on the portable radio telephone 1 0 housing 102 have a bullet shape on their le~Aing ends to glide off of the recçsse-l steps in the battery housing çhs3nnel Therefore, a user of a portable radiotelephone can more easily attach a m~t;ng battery.
Now lefel~ g to FIG. 4, there is shown a cross-sectional 1 5 view in perspective of a portion of the battery housing base 300.
This portion shows in more detail one inAent~tion 314 disposed in the sliding channel between two guide rails 308 and 309. As FIG. 4 shows, the indentation is recessed into all three sides of the sliding ch~nnel. The length of the indentation 314 is at 2 0 least as long as the length of the guide rail 309. The depth of the recessed step on all three sides of the slide is typically .07 mm. The flat end of the guide rail 308 adjoins the indentation 314. As previously mentioned, the indentation 314 enables the guide rails 307 through 312 to be molded as an integral part of 2 5 the battery housing base 300. In general, the indentations clear the gap between the guide rails allowing the part of the tool creating the guide rails to slide into the gap. The direction of the sli~ing action is from guide rail 308 to guide rail 309.
Due to the sliding action direction, the guide rail 308 must 3 0 adjoin the in(lent~t;r,n 314 so the sliding tool may clear the guide rail 308. Once the tool is clear of the guide rails, the battery housing base is ejected from the tool cavity. The sliding - 10 207û993 and ejecting steps of the t~oling process is Rimil~r to the battery housing 105 det~rhine from the portable radiotelephone 102.
The integral guide rails are molded using a four step process once the plastic material has been shot into the mold and the mold has cooled down. In the preferred embo~liment the housing portions are molded from polycarbonate plastic or fiimil:~r material. The first step is to remove the part of the tool creating the indentation.` The second step is to slide the part of the tool creating the guide rails appro~im~tçly 22 mm.
1 0 This sli~ing motion positions the part of the tool creating the guide rails 308 and 309 into the gap. The indentation 314 ensures that the sliding action of the sliding tool will not bind or catch a part of the housing base 300 creating the sliding r~h~nnel in the gap. Typically, the sliding tool may bind when 1 5 the plastic shrinks before the tool can slide into the gap. Also, the sliding tool can catch on flash, created by a tool adjacent to the sliding tool, as the tool slides. The indentation çlimin~tes both of these problemR. Once the tool creating the guide rails has slid into the gap, the third step is to open the mold up and 2 0 the fourth step is to eject the battery housing base 300 from the tool cavity.
Now referring to FIG. 5, there is shown a cross-sectional view of the battery housing base 300 and the battery housing cover 202 before their attached to each other. In the ~lefelled 2 5 embodiment of the present invention, the base 300is ~tt?.~hed to the cover 202 using an ultrasonic welding process. Using this process, a pointed protrusion 501 on the battery housing base 300 is inserted into a groove 503 in the battery housing cover 202. Once inserted an ultrasonic horn applies energy to 3 0 the battery housing base 300 which causes the protrusion 501 to fuse to the groove 503. This operation l.elrol-lls a secure and permanent bond between the base 300 and the cover 202. A
feature of the preferred embodiment of the present invention is that the ~tt~r.hm~nt method between the base 300 and the cover 202 does not alter the form, fit or function of the guide rails 309 within the sli~ing ch~nnel 507. For the user of a portable radiotelephone, this feature tr~n~l~t~s into a battery that will 5 always have a proper form, fit and function of the guide rails within the sli(ling rh~nnel~ latch mech~nism and battery cont~rtfi to the portable radiotelephone housing 102.
Therefore, a battery housing base having an integral, limited travel, sliding ch~nnpl mech~niRm with guide rails to 1 0 provide short travel between the engaged and disengaged position of the battery housing on a portable radiotelephone has been shown and described. The housing base is easily manllf~rtllred using a single shot injection, single pull ejection molding process. Critical interface limenRions on the 15 housing base are controlled and liR~ssociated from the ~tt~chm~nt of the battery housing cover.
What is claimed is:
313 through 316. The latch me~h~nism 201 i8 seen in greater detail in FIG. 3 and it can be perceived how the catch 301 rotates about the torsion bar 303 when the button portion 305 is pressed by the user to remove the battery. Such a button 1 0 pressing in a direction out of the plane of the page of FIG. 3 (and into indented area 227 of the portable radiotelephone housing 102) causes torsion bar 303 to rotate and move catch 301 into the plane of the page of FIG. 3. This motion disengages the catch 301 from slot 212 (shown in FIG.2B) 1 5 thereby unlocking the battery housing and enabling the user to slide the battery along g ude rails 307 through 312. Shortened guide rails 307 through 312, disposed on the parallel surfaces of each rh~nnel facing each other, with gaps in between each, enable secure fastening of the battery housing 105 to the 2 0 portable radiotelephone housing 102 the entire length of the battery housing 105 while allowing a short travel displ~cement of the battery housing before the battery housing may be disengaged and removed from the portable radiotelephone 102. When guide rails 307 through 312 are fully 2 5 disengaged from the portable radiotelephone housing, the battery electrical contacts 325 are disengaged from the battery input electrical contacts 225 on the portable radiotelephone housing. Once guide rails 307 through 312 have moved past the opposing g~ude rails 213 through 218 on the portable 3 0 radiotelephone housing 102, the battery 105 may be lifted clear of the portable radiotelephone 102.
In the preferred embo-liment, the guide rails 307 through 312 are bullet shaped (better illustrated in FIG. 4) but in - 8 20709~3 alternate embo-liment~ they may resemble other shapes to f ccompli~h the same function. The guide rails 307 through 312 must be elongated and parallel to the ~tt~chin~ surface 302 of the battery housing 300 and their m~tin~ surfaces must be 5 coplanar with the m~tin~ surfaces of the opposing guide rails 213 through 218 on the portable radiotelephone housing 102.
A feature of the l"efelled embo~liment of the present invention is an in~ant~tion in the gap between two n~iehhoring guide rails. The battery housing base includes four such 1 0 indentations 313 through 316. In the preferred embo-liment"
the in~l~nt~tions form a slight recessed step in the three surfaces of the sliding ch~nn~l 507. The in-lerlt~tions may not be limited to a recessed step; they may also a recessed slope or any shape which is lower than the plane on which the 1 5 protrusions are disposed. The in~nt~tions have two purposes. The first purpose is to enable the guide rails 307 through 312 to be manllf~rt~lred as an integral part of the housing base 300. The man1lf~ctl-ring process uses a single shot injection, straight pull ejection molding process. This 2 0 manufacturing process is inexpensive and has a fast molding cycle time. An advantage of molding the guide rails 307 through 312 as part of the battery housing base 300 is that critical interface rlimP!n~ions between the battery housing base 300 and the portable radiotelephone 102 can be controlled. It is 2 5 important that the relative dimensions between the guide rails 307 through 312, the latch mPrh~niam 201, and the battery cont~qct receptacles 325 be controlled to ensure proper fit and function of the battery 105 to the portable radiotelephone housing 102. Another advantage of having all critical 3 0 dimensions controlled on the battery housing base 300 is that the critical ~1imen~ions are not affected by the att~hm~nt of the battery housing cover 202.
- 20~0993 g The seconA purpose of the intl~nt~t;onc 313 through 316 on the battery holl~ing base 300 is to enable easy ~csemhly of the battery housing 105 to the portable radiotelephone housing 102.
The indentations 313 through 316 increase the width of the 5 sliding rh~nnel in the gap between the g ude rails on the battery housing base 300. The increased width allows the guide rails 307 through 312 on the portable radiotelephone housing 102 to be inserted into the gap with less restriction.
The guide rails 307 through 312 on the portable radio telephone 1 0 housing 102 have a bullet shape on their le~Aing ends to glide off of the recçsse-l steps in the battery housing çhs3nnel Therefore, a user of a portable radiotelephone can more easily attach a m~t;ng battery.
Now lefel~ g to FIG. 4, there is shown a cross-sectional 1 5 view in perspective of a portion of the battery housing base 300.
This portion shows in more detail one inAent~tion 314 disposed in the sliding channel between two guide rails 308 and 309. As FIG. 4 shows, the indentation is recessed into all three sides of the sliding ch~nnel. The length of the indentation 314 is at 2 0 least as long as the length of the guide rail 309. The depth of the recessed step on all three sides of the slide is typically .07 mm. The flat end of the guide rail 308 adjoins the indentation 314. As previously mentioned, the indentation 314 enables the guide rails 307 through 312 to be molded as an integral part of 2 5 the battery housing base 300. In general, the indentations clear the gap between the guide rails allowing the part of the tool creating the guide rails to slide into the gap. The direction of the sli~ing action is from guide rail 308 to guide rail 309.
Due to the sliding action direction, the guide rail 308 must 3 0 adjoin the in(lent~t;r,n 314 so the sliding tool may clear the guide rail 308. Once the tool is clear of the guide rails, the battery housing base is ejected from the tool cavity. The sliding - 10 207û993 and ejecting steps of the t~oling process is Rimil~r to the battery housing 105 det~rhine from the portable radiotelephone 102.
The integral guide rails are molded using a four step process once the plastic material has been shot into the mold and the mold has cooled down. In the preferred embo~liment the housing portions are molded from polycarbonate plastic or fiimil:~r material. The first step is to remove the part of the tool creating the indentation.` The second step is to slide the part of the tool creating the guide rails appro~im~tçly 22 mm.
1 0 This sli~ing motion positions the part of the tool creating the guide rails 308 and 309 into the gap. The indentation 314 ensures that the sliding action of the sliding tool will not bind or catch a part of the housing base 300 creating the sliding r~h~nnel in the gap. Typically, the sliding tool may bind when 1 5 the plastic shrinks before the tool can slide into the gap. Also, the sliding tool can catch on flash, created by a tool adjacent to the sliding tool, as the tool slides. The indentation çlimin~tes both of these problemR. Once the tool creating the guide rails has slid into the gap, the third step is to open the mold up and 2 0 the fourth step is to eject the battery housing base 300 from the tool cavity.
Now referring to FIG. 5, there is shown a cross-sectional view of the battery housing base 300 and the battery housing cover 202 before their attached to each other. In the ~lefelled 2 5 embodiment of the present invention, the base 300is ~tt?.~hed to the cover 202 using an ultrasonic welding process. Using this process, a pointed protrusion 501 on the battery housing base 300 is inserted into a groove 503 in the battery housing cover 202. Once inserted an ultrasonic horn applies energy to 3 0 the battery housing base 300 which causes the protrusion 501 to fuse to the groove 503. This operation l.elrol-lls a secure and permanent bond between the base 300 and the cover 202. A
feature of the preferred embodiment of the present invention is that the ~tt~r.hm~nt method between the base 300 and the cover 202 does not alter the form, fit or function of the guide rails 309 within the sli~ing ch~nnel 507. For the user of a portable radiotelephone, this feature tr~n~l~t~s into a battery that will 5 always have a proper form, fit and function of the guide rails within the sli(ling rh~nnel~ latch mech~nism and battery cont~rtfi to the portable radiotelephone housing 102.
Therefore, a battery housing base having an integral, limited travel, sliding ch~nnpl mech~niRm with guide rails to 1 0 provide short travel between the engaged and disengaged position of the battery housing on a portable radiotelephone has been shown and described. The housing base is easily manllf~rtllred using a single shot injection, single pull ejection molding process. Critical interface limenRions on the 15 housing base are controlled and liR~ssociated from the ~tt~chm~nt of the battery housing cover.
What is claimed is:
Claims (10)
1. A battery housing assembly for portable electronic equipment having at least first and second mating housing portions enclosing electrochemical cells therebetween, the first housing portion having at least one attaching surface by which the battery housing assembly is detachably connected to the portable electronic equipment, the battery housing assembly comprising:
at least one channel disposed in the attaching surface of the first housing portion, said one channel further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion.
at least one channel disposed in the attaching surface of the first housing portion, said one channel further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion.
2. A battery housing assembly in accordance with claim 1 wherein the first housing further comprises a latch mechanism.
3. A battery housing assembly in accordance with claim 1 wherein the first housing further comprises at least one battery contact registration receptacle.
4. A battery housing assembly in accordance with claim 1 wherein said at least one indentation is a recessed step.
5. A battery housing assembly in accordance with claim 1 further comprising a second channel, essentially parallel to said one channel, disposed in the attaching surface of the first housing portion.
6. A battery housing assembly in accordance with claim 5 wherein said second channel further comprises:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface of said second channel and adjoined to at least one end of said elongated protrusion.
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface of said second channel and adjoined to at least one end of said elongated protrusion.
7. A battery housing assembly for portable electronic equipment having at least first and second mating housing portions enclosing electrochemical cells therebetween, the first housing portion having at least one attaching surface by which the battery housing assembly is detachably connected to the portable electronic equipment, the battery housing assembly comprising:
at least one channel disposed in the attaching surface of the first housing portion, said one channel further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface;
(c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion;
a latch mechanism; and at least one battery contact registration receptacle.
at least one channel disposed in the attaching surface of the first housing portion, said one channel further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface;
(c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion;
a latch mechanism; and at least one battery contact registration receptacle.
8. A battery housing assembly in accordance with claim 7 further comprising a second channel, essentially parallel to said one channel, disposed in the attaching surface of the first housing portion.
9. A battery housing assembly in accordance with claim 8 wherein said second channel further comprises:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface of said second channel and adjoined to at least one end of said elongated protrusion.
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface; and (c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface of said second channel and adjoined to at least one end of said elongated protrusion.
10. A battery housing assembly for portable radiotelephone equipment having at least first and second mating housing portions enclosing electrochemical cells therebetween, the first housing portion having at least one attaching surface by which the battery housing assembly is detachably connected to the portable radiotelephone equipment, the battery housing assembly comprising:
at least a first and second channel, essentially parallel to each other, disposed in the attaching surface of the first housing portion, said first and second channels each further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface;
(c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion;
a latch mechanism; and at least one battery contact registration receptacle.
at least a first and second channel, essentially parallel to each other, disposed in the attaching surface of the first housing portion, said first and second channels each further comprising:
(a) at least a first surface;
(b) at least one elongated protrusion disposed on said first surface and extending along said first surface parallel to the attaching surface;
(c) at least one indentation, at least as long as said elongated protrusion, disposed in at least a portion of said first surface and adjoined to at least one end of said elongated protrusion;
a latch mechanism; and at least one battery contact registration receptacle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62016890A | 1990-11-30 | 1990-11-30 | |
US620,168 | 1990-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2070993A1 CA2070993A1 (en) | 1992-05-31 |
CA2070993C true CA2070993C (en) | 1996-08-27 |
Family
ID=24484865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002070993A Expired - Fee Related CA2070993C (en) | 1990-11-30 | 1991-10-17 | Battery housing assembly with integral limited travel guide rails |
Country Status (18)
Country | Link |
---|---|
JP (1) | JPH05504441A (en) |
KR (1) | KR960013850B1 (en) |
CN (1) | CN1026946C (en) |
AR (1) | AR246382A1 (en) |
AT (1) | AT401207B (en) |
AU (1) | AU9097691A (en) |
BR (1) | BR9106207A (en) |
CA (1) | CA2070993C (en) |
DE (2) | DE4192975T (en) |
FI (1) | FI923332A7 (en) |
FR (1) | FR2671665B1 (en) |
GB (1) | GB2271017B (en) |
HU (1) | HUT62726A (en) |
IT (1) | IT1250143B (en) |
MX (1) | MX174006B (en) |
NO (1) | NO922765D0 (en) |
SE (1) | SE9202249L (en) |
WO (1) | WO1992010004A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2680270A1 (en) * | 1991-08-07 | 1993-02-12 | Alsthom Cge Alcatel | Electronic equipment box comprising a device for storing electrical energy |
US5308716A (en) * | 1993-09-20 | 1994-05-03 | Motorola, Inc. | Battery pack retention apparatus |
US5857148A (en) * | 1995-06-13 | 1999-01-05 | Motorola, Inc. | Portable electronic device and method for coupling power thereto |
JP2842308B2 (en) * | 1995-06-30 | 1999-01-06 | 日本電気株式会社 | Battery case mounting structure for electronic equipment |
US5607792A (en) * | 1996-02-05 | 1997-03-04 | Motorola, Inc. | Battery latch |
US5704660A (en) * | 1996-03-13 | 1998-01-06 | Ericsson Inc. | Locking fastener for enclosure cover |
US5909102A (en) * | 1998-01-21 | 1999-06-01 | Motorola, Inc. | Battery connection apparatus employing fixed latching members |
US6157545A (en) * | 1998-05-14 | 2000-12-05 | Motorola, Inc. | Battery connection apparatus with end projections |
EP1477011A1 (en) * | 2002-02-21 | 2004-11-17 | Siemens Aktiengesellschaft | Housing or housing part and method for producing a housing or housing part, and tool for carrying out said method |
KR100703497B1 (en) * | 2004-01-05 | 2007-04-03 | 삼성전자주식회사 | Gaming Portable Communication Device |
EP1775845B1 (en) * | 2004-06-02 | 2011-07-27 | Research In Motion Limited | Slim line battery pack |
US7092746B2 (en) | 2004-06-02 | 2006-08-15 | Research In Motion Limited | Slim line battery pack |
CN101193519B (en) * | 2006-12-01 | 2011-08-31 | 仁宝电脑工业股份有限公司 | Pivot structure of portable electronic device |
JP2010212082A (en) * | 2009-03-10 | 2010-09-24 | Goyo Electronics Co Ltd | Case of radio terminal |
CN102121971B (en) * | 2010-12-28 | 2013-01-23 | 毛广甫 | Integral detection cabinet with battery cabin |
JP2016024238A (en) * | 2014-07-16 | 2016-02-08 | ローランド株式会社 | Electronic pad |
DE102014217347A1 (en) * | 2014-08-29 | 2016-03-03 | Sennheiser Electronic Gmbh & Co. Kg | Wireless pocket transmitter, accumulator unit for a wireless bodypack transmitter, wireless microphone, accumulator for a wireless microphone and charging unit for a bodypack transmitter and / or a microphone |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA834898A (en) * | 1966-04-04 | 1970-02-17 | H. Rush David | Combination apparatus cover and battery pack |
FR1549792A (en) * | 1967-12-21 | 1968-12-13 | ||
US3864172A (en) * | 1973-05-17 | 1975-02-04 | Rca Corp | Battery connecting assembly |
US4309067A (en) * | 1979-10-17 | 1982-01-05 | Black & Decker Inc. | Mechanical and electrical connection interface for a battery containing pack |
JPS61121260A (en) * | 1984-11-16 | 1986-06-09 | Matsushita Electric Ind Co Ltd | Battery power source mounting device for electronic equipment |
JPS62272456A (en) * | 1986-05-21 | 1987-11-26 | Hitachi Ltd | Storage battery attachment/detachment mechanism |
US4904549A (en) * | 1988-11-04 | 1990-02-27 | Motorola, Inc. | Battery housing with integral latch and positive displacement apparatus |
-
1991
- 1991-10-17 JP JP4501505A patent/JPH05504441A/en active Pending
- 1991-10-17 CA CA002070993A patent/CA2070993C/en not_active Expired - Fee Related
- 1991-10-17 DE DE19914192975 patent/DE4192975T/de active Pending
- 1991-10-17 HU HU921913A patent/HUT62726A/en unknown
- 1991-10-17 KR KR1019920701800A patent/KR960013850B1/en not_active Expired - Fee Related
- 1991-10-17 AU AU90976/91A patent/AU9097691A/en not_active Abandoned
- 1991-10-17 AT AT0900991A patent/AT401207B/en not_active IP Right Cessation
- 1991-10-17 BR BR919106207A patent/BR9106207A/en not_active IP Right Cessation
- 1991-10-17 GB GB9216275A patent/GB2271017B/en not_active Expired - Fee Related
- 1991-10-17 WO PCT/US1991/007753 patent/WO1992010004A1/en not_active Application Discontinuation
- 1991-10-17 DE DE4192975A patent/DE4192975C2/en not_active Expired - Fee Related
- 1991-11-09 MX MX9102302A patent/MX174006B/en not_active IP Right Cessation
- 1991-11-12 AR AR91321133A patent/AR246382A1/en active
- 1991-11-22 IT ITRM910885A patent/IT1250143B/en active IP Right Grant
- 1991-11-29 CN CN91111198A patent/CN1026946C/en not_active Expired - Fee Related
- 1991-11-29 FR FR9114855A patent/FR2671665B1/en not_active Expired - Fee Related
-
1992
- 1992-07-14 NO NO922765A patent/NO922765D0/en unknown
- 1992-07-22 FI FI923332A patent/FI923332A7/en not_active Application Discontinuation
- 1992-07-29 SE SE9202249A patent/SE9202249L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FI923332A0 (en) | 1992-07-22 |
CA2070993A1 (en) | 1992-05-31 |
FI923332A7 (en) | 1992-07-22 |
MX9102302A (en) | 1992-07-08 |
MX174006B (en) | 1994-04-13 |
ITRM910885A1 (en) | 1993-05-22 |
CN1026946C (en) | 1994-12-07 |
AU9097691A (en) | 1992-06-25 |
ATA900991A (en) | 1995-11-15 |
BR9106207A (en) | 1993-03-30 |
IT1250143B (en) | 1995-03-30 |
SE9202249D0 (en) | 1992-07-29 |
GB2271017B (en) | 1995-02-08 |
HU9201913D0 (en) | 1992-10-28 |
KR920704366A (en) | 1992-12-19 |
AT401207B (en) | 1996-07-25 |
WO1992010004A1 (en) | 1992-06-11 |
KR960013850B1 (en) | 1996-10-10 |
NO922765L (en) | 1992-07-14 |
GB2271017A (en) | 1994-03-30 |
GB9216275D0 (en) | 1992-09-23 |
CN1061873A (en) | 1992-06-10 |
ITRM910885A0 (en) | 1991-11-22 |
JPH05504441A (en) | 1993-07-08 |
SE9202249L (en) | 1992-09-29 |
NO922765D0 (en) | 1992-07-14 |
DE4192975C2 (en) | 1996-01-25 |
DE4192975T (en) | 1992-12-10 |
FR2671665B1 (en) | 1997-11-28 |
HUT62726A (en) | 1993-05-28 |
AR246382A1 (en) | 1994-07-29 |
FR2671665A1 (en) | 1992-07-17 |
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Legal Events
Date | Code | Title | Description |
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EEER | Examination request | ||
MKLA | Lapsed |