CN106061185A - Electrical cabinet capable of contact indication and provided with latch fixed column assembly - Google Patents

Electrical cabinet capable of contact indication and provided with latch fixed column assembly Download PDF

Info

Publication number
CN106061185A
CN106061185A CN201610636126.7A CN201610636126A CN106061185A CN 106061185 A CN106061185 A CN 106061185A CN 201610636126 A CN201610636126 A CN 201610636126A CN 106061185 A CN106061185 A CN 106061185A
Authority
CN
China
Prior art keywords
main body
pillar main
breech lock
insertion plate
order
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.)
Pending
Application number
CN201610636126.7A
Other languages
Chinese (zh)
Inventor
何俊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201610636126.7A priority Critical patent/CN106061185A/en
Publication of CN106061185A publication Critical patent/CN106061185A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/14Mounting supporting structure in casing or on frame or rack
    • H05K7/1438Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452Mounting of connectors; Switching; Reinforcing of back panels
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64Means for preventing incorrect coupling
    • H01R13/641Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73Means for mounting coupling parts to apparatus or structures, e.g. to a wall

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention provides an electrical cabinet capable of contact indication and provided with a latch fixed column assembly. The electrical cabinet comprises a cabinet body (1), an installation pedestal (2), a multi-hole socket (10) and the latch fixed column assembly; the installation pedestal (2) is composed of an insulated inner core (20) and a pedestal casing (21) in the periphery of the insulated inner core (20); the multi-hole socket (10) is connected with the installation pedestal (2) in an inserted manner; and the latch fixed column assembly comprises a front latch fixed column (4) and a back latch fixed column (3), and the front latch fixed column (4) and the back latch fixed column (3) are inserted into the installation pedestal (2) in opposite directions so as to fasten the multi-hole socket (10), connected to the installation pedestal (2), in a dismountable manner.

Description

A kind of contact instruction and there is breech lock fix the regulator cubicle of column assembly
Technical field
The present invention relates to regulator cubicle field, a kind of contact instruction and there is breech lock fix the regulator cubicle of column assembly.
Background technology
Regulator cubicle generally requires install and there is the electrical equipment inserting holes more, in order to respectively from different electric components Electrically connect or be connected with integrated form plug.In order to ensure the reliability of this electrical connection, above-mentioned insert in the hole each insert Hand-hole all has bigger adhesion (frictional force) with corresponding latch or contact pin.And repeatedly plugging in operating process, this The described electrical equipment (socket) with insertion hole is easily caused the interference and shadow being mechanically and electrically by stronger contact engaging and separating force Ring.More existing fastening means, such as, use multiple (more than or equal to four) securing member to carry out Multi-point fastening, it tends to be difficult to keep away Exempt from produced during life-time service slight loosen, and the tightening operation in its later stage is loaded down with trivial details, and be difficult to reach fastening force It is uniformly distributed, thus the mechanical stable degree of electrical equipment is adversely affected.
Summary of the invention
It is an object of the invention to provide and a kind of contact instruction and there is breech lock fix the regulator cubicle of column assembly, be used for overcoming Drawbacks described above of the prior art.
Contact instruction according to the present invention and there is breech lock fixes the regulator cubicle of column assembly, including: cabinet, be fixed on described The installation pedestal being made up of the base housing at insulation inner core and described insulation inner core periphery in cabinet and described installation pedestal Porous type socket and described breech lock that plug-in type connects fix column assembly, and described breech lock is fixed column assembly and included with contrary Direction is inserted described installation pedestal thus is detachably fastened the described porous type socket being connected to described installation pedestal Front breech lock fix post and rear breech lock fixes post, form upper inserting between epipleural and the described insulation inner core of described base housing Hole, forms lower jack between lower side panel and the described insulation inner core of described base housing, described upper jack and lower jack supply respectively Upper insertion plate and lower insertion plate at the dorsal part of described porous type socket insert, the epipleural of described base housing and described pedestal That one end contacted at the dorsal part with described porous type socket of the lower side panel of housing is provided with touch sensor, described porous Bottom at the dorsal part of formula socket is provided with flashing indicator light, and described flashing indicator light electrically connects with described touch sensor, from And upper insertion plate at the dorsal part of described porous type socket and lower insertion plate insert respectively on described in jack and lower jack and Making described touch sensor with when contacting at the dorsal part of described porous type socket, described touch sensor transmission signal also controls Described flashing indicator light sends the light of flicker, and the light being sent flicker by described flashing indicator light is pointed out described many intuitively Upper insertion plate and lower insertion plate at the dorsal part of cellular type socket are inserted respectively in described upper jack and lower jack to insert and put in place, its In, described front breech lock fix post include front pillar main body and with the upper end of described front pillar main body by anterior bearing axial restraint The preceding thread actuator that ground connects;Described rear breech lock is fixed post and is included that rear pillar main body and the lower end with described rear pillar main body are passed through Rear bearings and rear thread actuator that axial restraint ground connects, wherein, described preceding thread actuator and described rear thread drive Be provided with external screw thread on the excircle of part, in order to respectively with the corresponding screw thread in the epipleural of described base housing and lower side panel Hole coordinate, the end of described preceding thread actuator and described rear thread actuator be provided with tool engagement portion in order to carry out turn Dynamic driving;Described lower insertion plate is provided with after the hypocone section of the rear pillar main body in order to fix post with described rear breech lock coordinates Bellmouth and in order to fix the front bellmouth that the hypocone section of the front pillar main body of post coordinates, described upper insertion with described front breech lock Plate is provided with rear bellmouth that the epicone section of the rear pillar main body in order to fix post with described rear breech lock coordinates and in order to Described front breech lock fixes the front bellmouth that the epicone section of the front pillar main body of post coordinates, wherein, the hypocone of described rear pillar main body Section and epicone section are the most tapered, and epicone section and the hypocone section of described front pillar main body are the most tapered, and institute State rear pillar main body and front pillar main body be included in the intermediate cylinder section between respective hypocone section and epicone section, in order to institute The through hole stated in insulation inner core coordinates, and described rear pillar main body also includes that the terminal expansion being connected with its epicone section is in order to coordinate And it being piercing in the through hole in the epipleural of described base housing, described front pillar main body also includes the end being connected with its hypocone section Extension is in order to coordinate and to be piercing in the through hole in the lower side panel of described base housing, at the bottom of the lower side panel of described base housing The epipleural end face of face and described base housing is provided with LED illumination lamp, and described LED illumination lamp is in order to by described porous type Upper insertion plate and lower insertion plate at the dorsal part of socket play illumination and use when inserting respectively in described upper jack and lower jack, side Insertion plate stated by toilet and lower insertion plate inserts in described upper jack and lower jack the most respectively, and described LED illumination lamp is LED ball Bubble lamp.
By said apparatus, owing to using two breech lock posts, it can replace and improve the fastening using many group securing members Scheme, while simplifying pretensioning operation, utilizes cone match the part of the electrical equipment inserted can be carried out fastening-type door bolt Lock is fixing, thus realizes stress when avoiding and using many group securing members and stress distribution fastens uniformly.And, insert Two breech lock posts (one is inserted from top to bottom, and one is inserted from top to bottom) in opposite direction and the tapered conical surface in opposite direction Cooperation part stress can be offset, thus stress between avoiding for the various piece of electrical equipment produces.And it is whole Individual structure forms four limit delivery ceremonies and connects, and improves the stable degree of connection.Thus, when in use occurring to connect loosening only Only can eliminate loosening gap by the threaded drive of two breech lock post ends of operation.So that attachment structure is the most firm Reliably.
Accompanying drawing explanation
Fig. 1 is the contact instruction of the present invention and has the structural representation that breech lock fixes the regulator cubicle of column assembly.
Fig. 2 is the enlarged diagram at anterior bearing.
Fig. 3 is the enlarged diagram at rear bearings.
Detailed description of the invention
Below in conjunction with Fig. 1-3, the present invention is described in detail.
Contact indicates and has breech lock and fixes the regulator cubicle of column assembly according to an embodiment of the invention, including: cabinet 1, The installation base being made up of the base housing 21 at insulation inner core 20 and described insulation inner core 20 periphery being fixed in described cabinet 1 Porous type socket 10 and described breech lock that seat 2 is connected with described installation pedestal 2 plug-in type fix column assembly, and described breech lock is solid Fixed column assembly includes inserting described installation pedestal 2 in a reverse direction thus to the described porous being connected to described installation pedestal 2 The front breech lock that formula socket 10 carries out being detachably fastened fixes post 4 and rear breech lock fixes post 3, the epipleural of described base housing 21 And form upper jack between described insulation inner core 20, formed between lower side panel and the described insulation inner core 20 of described base housing 21 Lower jack, described upper jack and lower jack are respectively for the upper insertion plate 132 at the dorsal part of described porous type socket 10 and lower insertion Plate 131 inserts, the epipleural of described base housing 21 and the lower side panel of described base housing 21 with described porous type socket 10 Dorsal part at that one end of contacting be provided with touch sensor 15, the bottom at the dorsal part of described porous type socket 10 is provided with Flashing indicator light 16, described flashing indicator light 16 electrically connects with described touch sensor 15, thus at described porous type socket 10 Dorsal part at upper insertion plate 132 insert described upper jack with lower insertion plate 131 respectively and make described contact with in lower jack Sensor 15 is with when contacting at the dorsal part of described porous type socket 10, and described touch sensor 15 transmits signal and controls described sudden strain of a muscle Bright display lamp 16 sends the light of flicker, and the light being sent flicker by described flashing indicator light 16 points out described porous intuitively Upper insertion plate 132 and lower insertion plate 131 at the dorsal part of formula socket 10 are inserted respectively in described upper jack and lower jack insertion Putting in place, wherein, described front breech lock is fixed post 4 and is included front pillar main body and with the upper end of described front pillar main body by anterior bearing 48 And the preceding thread actuator 8 that axial restraint ground connects;Described rear breech lock fix post 3 include rear pillar main body and with described rear pillar master The lower end of the body rear thread actuator 6 that axial restraint ground connects by rear bearings 36, wherein, described preceding thread actuator 8 Be provided with external screw thread with on the excircle of described rear thread actuator 6, in order to respectively with the epipleural of described base housing 21 Coordinating with the corresponding screwed hole in lower side panel, the end of described preceding thread actuator 8 and described rear thread actuator 6 is respectively provided with Tool engagement portion 60,80 is had to drive in order to carry out rotating;Described lower insertion plate 131 is provided with in order to fix with described rear breech lock Rear bellmouth that the hypocone section 31 of the rear pillar main body of post 3 coordinates and in order to fix the front pillar main body of post 4 with described front breech lock Hypocone section 41 coordinate front bellmouth, after described upper insertion plate 132 is provided with in order to fix post 3 with described rear breech lock Rear bellmouth that the epicone section 33 of post main body coordinates and in order to fix the upper tapering of the front pillar main body of post 4 with described front breech lock The front bellmouth that section 43 coordinates, wherein, hypocone section 31 and the epicone section 33 of described rear pillar main body are the most tapered, described Epicone section 43 and the hypocone section 41 of front pillar main body are the most tapered, and described rear pillar main body and front pillar main body all include Intermediate cylinder section 32,42 between respective hypocone section and epicone section, in order to the through hole in described insulation inner core 20 Coordinating, described rear pillar main body also includes that the terminal expansion 34 being connected with its epicone section 33 is in order to coordinate and to be piercing in described base Through hole in the epipleural of seat housing 21, described front pillar main body also includes that the terminal expansion 44 being connected with its hypocone section 41 is used To coordinate and to be piercing in the through hole in the lower side panel of described base housing 21, in the lower side panel bottom surface of described base housing 21 and The epipleural end face of described base housing 21 is provided with LED illumination lamp 14, and described LED illumination lamp 14 is in order to by described porous Upper insertion plate 132 and lower insertion plate 131 at the dorsal part of formula socket 10 play when inserting respectively in described upper jack and lower jack Illumination uses, and facilitates described upper insertion plate 132 and lower insertion plate 131 quickly to insert in described upper jack and lower jack respectively, institute State LED illumination lamp 14 for LEDbulb lamp.
Advantageously or exemplarily, wherein, described porous type socket 10 is in order to transmit weak electric signal or in order to provide forceful electric power Power.
Advantageously or exemplarily, wherein, the cross section of described front pillar main body and/or rear pillar main body is square.
By the device in above example, owing to using two breech lock posts, it is tight that it can replace and improve the many groups of use The fastening schemes of firmware, while simplifying pretensioning operation, utilizes cone match can enter the part of the electrical equipment inserted Row fastening-type breech lock is fixed, thus realizes stress when avoiding using many group securing members and stress distribution is the tightest Gu.And, two breech lock posts that direction of insertion is contrary (is inserted from top to bottom, and is inserted from top to bottom) and tapered side Part stress can be offset to the cooperation of the contrary conical surface, thus the stress between avoiding for the various piece of electrical equipment Produce.And total forms four limit delivery ceremonies and connects, and improves the stable degree of connection.Thus, in use occur Connect and can eliminate loosening gap only by the threaded drive operating two breech lock post ends when loosening.Such scheme can Effectively solve the problems of the prior art.
Those skilled in the art can be clear and definite, without departing from the overall spirit of the present invention and design when, and can To make the various modification for above example.Within it each falls within protection scope of the present invention.The protection scheme of the present invention It is as the criterion with claims appended hereto.

Claims (3)

1. contact instruction and there is breech lock fix a regulator cubicle for column assembly, including: cabinet (1), being fixed on described cabinet (1) In by the installation pedestal (2) that forms of base housing (21) at insulation inner core (20) and described insulation inner core (20) periphery and Porous type socket (10) and described breech lock that described installation pedestal (2) plug-in type connects fix column assembly, and described breech lock is fixed Column assembly includes inserting described installation pedestal (2) in a reverse direction thus to being connected to the described many of described installation pedestal (2) The front breech lock that cellular type socket (10) carries out being detachably fastened fixes post (4) and rear breech lock fixes post (3), described base housing (21) form upper jack between epipleural and described insulation inner core (20), the lower side panel of described base housing (21) with described absolutely Forming lower jack between edge inner core (20), described upper jack and lower jack supply at the dorsal part of described porous type socket (10) respectively Upper insertion plate (132) and lower insertion plate (131) insert, the epipleural of described base housing (21) and described base housing (21) That one end contacted at the dorsal part with described porous type socket (10) of lower side panel is provided with touch sensor (15), described many Bottom at the dorsal part of cellular type socket (10) is provided with flashing indicator light (16), and described flashing indicator light (16) contacts biography with described Sensor (15) electrically connects, thus the upper insertion plate (132) at the dorsal part of described porous type socket (10) and lower insertion plate (131) Insert respectively and described upper jack and lower jack make the back of the body of described touch sensor (15) and described porous type socket (10) At side during contact, described touch sensor (15) transmission signal also controls described flashing indicator light (16) and sends the light of flicker, By described flashing indicator light (16) send that the light of flicker points out at the dorsal part of described porous type socket (10) intuitively upper Insert plate (132) and lower insertion plate (131) be inserted respectively in described upper jack and lower jack to insert and put in place, wherein, described before Breech lock fix post (4) include front pillar main body and with the upper end of described front pillar main body by anterior bearing (48) axial restraint ground The preceding thread actuator (8) connected;Described rear breech lock fix post (3) include rear pillar main body and with described rear pillar main body The lower end rear thread actuator (6) that axial restraint ground connects by rear bearings (36), wherein, described preceding thread actuator (8) and be provided with external screw thread on the excircle of described rear thread actuator (6), in order to respectively with described base housing (21) Corresponding screwed hole in epipleural and lower side panel coordinates, described preceding thread actuator (8) and the end of described rear thread actuator (6) It is provided with tool engagement portion (60,80) at end to drive in order to carry out rotating;Described lower insertion plate (131) is provided with in order to Described rear breech lock fix rear bellmouth that the hypocone section (31) of the rear pillar main body of post (3) coordinates and in order to described front breech lock The front bellmouth that the hypocone section (41) of the front pillar main body of fixing post (4) coordinates, described upper insertion plate (132) is provided with in order to The rear bellmouth that coordinates with the epicone section (33) of the rear pillar main body that described rear breech lock fixes post (3) and in order to described before door bolt The front bellmouth that the epicone section (43) of the front pillar main body of locking fixed column (4) coordinates, wherein, the hypocone section of described rear pillar main body (31) and epicone section (33) is the most tapered, the epicone section (43) of described front pillar main body and hypocone section (41) to Under tapered, and described rear pillar main body and front pillar main body be included in the intermediolateral column between respective hypocone section and epicone section Body section (32,42), in order to coordinate with the through hole in described insulation inner core (20), described rear pillar main body also includes and its epicone section (33) terminal expansion (34) connected is in order to coordinate and to be piercing in the through hole in the epipleural of described base housing (21), described Front pillar main body also includes that the terminal expansion (44) being connected with its hypocone section (41) is in order to coordinate and to be piercing in described base shell Through hole in the lower side panel of body (21), upper at the lower side panel bottom surface of described base housing (21) and described base housing (21) Side plate end face is provided with LED illumination lamp (14), and described LED illumination lamp (14) is in order at the back of the body by described porous type socket (10) Upper insertion plate (132) and lower insertion plate (131) at side play illumination and use when inserting respectively in described upper jack and lower jack, Described upper insertion plate (132) and lower insertion plate (131) is facilitated quickly to insert in described upper jack and lower jack respectively, described LED Illuminating lamp (14) is LEDbulb lamp.
The most as claimed in claim 1 a kind of contact instruction and there is breech lock fix the regulator cubicle of column assembly, wherein, described porous Formula socket (10) is in order to transmit weak electric signal or in order to provide forceful electric power power.
The most as claimed in claim 1 or 2 a kind of contact instruction and there is breech lock fix the regulator cubicle of column assembly, wherein, described The cross section of front pillar main body and/or rear pillar main body is square.
CN201610636126.7A 2016-08-05 2016-08-05 Electrical cabinet capable of contact indication and provided with latch fixed column assembly Pending CN106061185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610636126.7A CN106061185A (en) 2016-08-05 2016-08-05 Electrical cabinet capable of contact indication and provided with latch fixed column assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610636126.7A CN106061185A (en) 2016-08-05 2016-08-05 Electrical cabinet capable of contact indication and provided with latch fixed column assembly

Publications (1)

Publication Number Publication Date
CN106061185A true CN106061185A (en) 2016-10-26

Family

ID=57481090

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610636126.7A Pending CN106061185A (en) 2016-08-05 2016-08-05 Electrical cabinet capable of contact indication and provided with latch fixed column assembly

Country Status (1)

Country Link
CN (1) CN106061185A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1364329A (en) * 2000-03-17 2002-08-14 Aeg低压技术股份有限两合公司 Adapter plate and system for mounting component on assembly base
JP2007113341A (en) * 2005-10-24 2007-05-10 Chugoku Electric Power Co Inc:The Locking/unlocking device of gate door, and locking/unlocking method using it
CN104040671A (en) * 2011-12-21 2014-09-10 伊顿公司 Electrical switching apparatus and trip latch assembly therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1364329A (en) * 2000-03-17 2002-08-14 Aeg低压技术股份有限两合公司 Adapter plate and system for mounting component on assembly base
JP2007113341A (en) * 2005-10-24 2007-05-10 Chugoku Electric Power Co Inc:The Locking/unlocking device of gate door, and locking/unlocking method using it
CN104040671A (en) * 2011-12-21 2014-09-10 伊顿公司 Electrical switching apparatus and trip latch assembly therefor

Similar Documents

Publication Publication Date Title
US9236685B2 (en) Quickly connectable plug and socket for power connection of electrical lighting apparatus
CN106061185A (en) Electrical cabinet capable of contact indication and provided with latch fixed column assembly
CN106102407A (en) A kind of have breech lock and fix column assembly and can the regulator cubicle of abrasionproof
CN106211669A (en) A kind of have breech lock fix column assembly and can install report to the police regulator cubicle
CN106231834A (en) A kind of have breech lock and fix column assembly and the regulator cubicle that can illuminate
CN106684626A (en) Electric cabinet having latch fixing post assembly and capable of providing installation prompts
CN202938133U (en) Combined type light emitting diode (LED) lamp
CN106061188A (en) Electrical cabinet with dismountable latch fixed column assembly
CN106229841A (en) A kind of have dismountable breech lock and fix column assembly and the regulator cubicle of preventing rubber pad
CN209860259U (en) Water, gas and electricity quick connecting piece
CN106061189A (en) Electrical cabinet capable of ventilation and provided with latch fixed column assembly
CN106102406A (en) A kind of have an alarm and breech lock fixes the regulator cubicle of column assembly
CN106231835A (en) A kind of dispel the heat and there is breech lock fix the Novel electrical cabinet of column assembly
CN106163156A (en) A kind of regulator cubicle fixing column assembly with dust arrester and breech lock
CN106163204A (en) A kind of have the adjustable electric gas holder that dismountable breech lock fixes column assembly
CN106684627A (en) Electrical cabinet capable of warning and with latch fixing post assembly
CN106231833A (en) A kind of have a LED illumination lamp and breech lock fixes the regulator cubicle of column assembly
CN106028721A (en) Electrical cabinet with latch fixing pillar component and flickering indicator light
CN106132142A (en) A kind of have a touch sensor and breech lock fixes the regulator cubicle of column assembly
CN106211670A (en) A kind of have breech lock and fix column assembly and the regulator cubicle of page three fans
CN106061187A (en) Solar power generating electrical cabinet with latch fixed column assembly
CN203850485U (en) Portable plugging contact type combined module
CN103883992A (en) Quick dismounting and mounting structure and bicycle lamp with same
CN106207780A (en) A kind of have breech lock and fix the regulator cubicle of column assembly and electronic-controlled installation
CN106211668A (en) A kind of have dismountable breech lock and fix the shock-proof type regulator cubicle of column assembly

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20161026

WD01 Invention patent application deemed withdrawn after publication