CN204040427U - A kind of metope stick ceramic machine - Google Patents

A kind of metope stick ceramic machine Download PDF

Info

Publication number
CN204040427U
CN204040427U CN201420457954.0U CN201420457954U CN204040427U CN 204040427 U CN204040427 U CN 204040427U CN 201420457954 U CN201420457954 U CN 201420457954U CN 204040427 U CN204040427 U CN 204040427U
Authority
CN
China
Prior art keywords
mainframe
swing
tooth bar
metope
ratchet
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.)
Withdrawn - After Issue
Application number
CN201420457954.0U
Other languages
Chinese (zh)
Inventor
曹妙
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 CN201420457954.0U priority Critical patent/CN204040427U/en
Application granted granted Critical
Publication of CN204040427U publication Critical patent/CN204040427U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

Links

Landscapes

  • Load-Engaging Elements For Cranes (AREA)

Abstract

The utility model discloses a kind of metope stick ceramic machine, it comprises mainframe, be located at the supporting station at mainframe end face place, be located at supporting station bottom side knock supporting station bumper jar, be respectively located at mainframe rear and front end for clamping the transfer arm of potsherd and swinging clamping device, transfer arm telescopically is installed on mainframe, and transfer arm is connected with retraction pull rope; Described swing clamping device comprise be articulated with mainframe swing handle, be fixedly installed on swing handle free end and can stop at mainframe end face place swing chuck, connect swing handle and mainframe make swing chuck stop at mainframe end face place swing back-moving spring, be installed on swing handle jointed shaft and with the rotating disc of swing handle synchronous rotary, be connected and be set around the swing pull rope of rotating disc outer peripheral face.This splicing machine fuselage is light portable, can be compacted to metope quickly and efficiently, avoid free-hand beating to knock potsherd by smooth for potsherd, and the low and Loss reducing of working strength, pastes smooth solid.

Description

A kind of metope stick ceramic machine
Technical field
The present invention relates to decoration construction instrument, particularly relate to for auxiliary a kind of metope stick ceramic machine potsherd being pasted metope.
Background technology
At present, when carrying out wall surfacing, metope potsherd is pasted on wall one by one by operator usually, taping process needs to put on the adhesives such as cement mortar or bonding agent at potsherd dorsal part, then hold potsherd in hands and be pressed onto metope, then use the special tool with Elastic Contact face to knock potsherd and make it smoothly be closely attached on metope.Taping process needs that operator is free-hand to carry out overlaying then to beat knocking potsherd, needs to consume the very large muscle power of operator, and operating efficiency is not high yet.
Summary of the invention
For the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of can efficiently entirely dress fast and pastes the metope stick ceramic machine of potsherd to metope.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of metope stick ceramic machine, it comprises mainframe, be located at the supporting station at mainframe end face place, be located at supporting station bottom side knock supporting station make its compacting potsherd be closely attached on metope bumper jar, be respectively located at mainframe rear and front end for clamping the transfer arm of potsherd and swinging clamping device, transfer arm telescopically is installed on mobile chute that described mainframe offers and is connected with mainframe by stretching out back-moving spring, and transfer arm is connected with retraction pull rope; Described swing clamping device comprise be articulated with mainframe swing handle, be fixedly installed on swing handle free end and can stop at mainframe end face place swing chuck, connect swing that handle and mainframe make that swing chuck stops at the swing back-moving spring at mainframe end face place, coaxial or bias be installed on swing handle jointed shaft and with the rotating disc of swing handle synchronous rotary, be connected and be set around the swing pull rope of rotating disc outer peripheral face, described transfer arm part stretch out mainframe end face and with swing the relative both ends being positioned at mainframe of chuck.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, described metope stick ceramic machine is provided with the clamping controlling organization being installed on mainframe, described clamping controlling organization comprises the ratchet being installed on described mainframe, be positioned at the driving tooth bar that described ratchet side also can promote ratchet one-way rotation, be articulated with described mainframe and be positioned at described ratchet opposite side stop ratchet reversely rotate non-return location tooth bar, be articulated with mainframe and the swing connecting bar hinged with driving tooth bar, being installed on mainframe and pushing up presses the elasticity driving tooth bar dorsal part to make driving tooth bar be flapped toward ratchet to urge locking device, be installed on mainframe and with the winder of described ratchet synchronous rotary, described retraction pull rope is connected with swing pull rope and is set around this winder.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, and is provided with the tooth bar back-moving spring ordering about and drive the axial return of tooth bar between described swing connecting bar and mainframe.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, and described driving tooth bar and the outer of non-return location tooth bar are arranged with the limitting casing limiting skew space, side, tooth bar both sides.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, and described swing connecting bar extends to form swing handle to away from driving tooth bar side, drives the rear side of tooth bar to be provided with elastic reset part, and elastic reset part slides with driving tooth bar and abuts.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, described non-return location tooth bar and drive tooth bar to be all be provided with the ratchet bar arranging ratchet coordinated with ratchet.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, described mainframe comprises bracing frame and the adjustable Extension support being deeply plugged in amount support frame as described above front end, and described transfer arm and front clamp device are arranged at the rear end of bracing frame and the front end of Extension support respectively.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, and described bumper jar comprises the motor being fixedly installed in described mainframe, the anxious swivelling arm of the bias driven by motor output shaft, is positioned at the power rack that can move back and forth perpendicular to supporting station inside supporting station, is fixedly connected on power rack and is interrupted by eccentric anxious swivelling arm the swinging plate stirred.
One as the technical scheme of metope stick ceramic machine of the present invention is improved, described power rack is fixedly connected with by the vertical rod perpendicular to supporting station, described mainframe is fixedly connected with and is sheathed on the positioning sleeve that vertical rod is vertical rod orientation guiding, and described vertical rod sleeve is provided with the power spring that can promote described power rack and reset to supporting station side.
Beneficial effect of the present invention is: be put in supporting station by counter for potsherd, the both ends of the surface of potsherd are clamped by the swing chuck at mainframe two ends and transfer arm, adhesives is coated at the potsherd back side, metope stick ceramic machine and potsherd are held, half-twist attaches on wall, rotary course transfer arm is positioned at downside and holds potsherd, swings chuck and is positioned at upside clamping potsherd.After being attached to metope, knocking supporting station by bumper jar vibrations thus potsherd flattened ground actual arrival metope, transfer arm return by retraction pull rope pull thus leaves potsherd; Meanwhile, walk around rotating disc drive rotating disc to drive to swing handle upwards swing thus make swing chuck leave potsherd by swinging pull rope.Take off metope stick ceramic machine keep flat and unclamp pull rope, under the restoring force effect of stretching out back-moving spring, make transfer arm reset along mobile chute; Meanwhile, under the effect swinging back-moving spring, swing chuck and swing handle also spinning reduction, swinging chuck and locate in opposite directions to transfer arm, clamp potsherd together with transfer arm.This splicing machine fuselage is light portable, can be compacted to metope quickly and efficiently, avoid free-hand beating to knock potsherd by smooth for potsherd, and the low and Loss reducing of working strength, pastes smooth solid.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of metope stick ceramic of the present invention machine embodiment.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of metope stick ceramic of the present invention machine, it comprises mainframe 10, be located at the supporting station 15 at mainframe end face place, be located at supporting station bottom side knock supporting station 15 make its compacting potsherd be closely attached on metope bumper jar 13, be respectively located at mainframe 10 rear and front end for clamping the transfer arm 25 of potsherd and swinging clamping device 50, transfer arm 25 telescopically is installed on mobile chute that described mainframe 10 offers and is connected with mainframe 10 by stretching out back-moving spring 26, and transfer arm 25 is connected with retraction pull rope 28, described swing clamping device 50 comprises the swing handle 51 being articulated with mainframe 10, be fixedly installed on and swing handle 51 free end and the swing chuck 55 that can stop at mainframe 10 end face place, connecting swing handle 51 makes swing chuck 22 stop at the swing back-moving spring 56 at mainframe 10 end face place with mainframe 10, coaxial or bias be installed on swing handle 51 jointed shaft and with the rotating disc 52 swinging handle 51 synchronous rotary, connect and be set around the swing pull rope 58 of rotating disc 52 outer peripheral face, described transfer arm 25 part stretch out mainframe 10 end face and with swing the relative both ends being positioned at mainframe 10 of chuck 55.Supporting station is put in by counter for potsherd, shiny surface is downward, bonding plane upward, clamped the both ends of the surface of potsherd by the swing chuck 55 at mainframe 10 two ends and transfer arm 25, coat the adhesivess such as cement mortar at the potsherd back side, held the related potsherd scribbling adhesives of metope stick ceramic machine, half-twist attaches on wall, rotary course transfer arm 25 is positioned at downside and holds potsherd, swings chuck 55 and is positioned at upside clamping potsherd, the scale error of Absorbable rod potsherd.After being attached to metope, knocking supporting station 15 by bumper jar 13 vibrations thus potsherd flattened ground actual arrival metope, making transfer arm 25 return thus leave potsherd by retraction pull rope pull; Meanwhile, by swing pull rope 58 walk around rotating disc 52 drive rotating disc 52 to drive to swing handle 51 and swing chuck 55 upwards swing leave potsherd, thus metope stick ceramic machine can be taken off.The metope stick ceramic machine taken off keeps flat and unclamps and swings pull rope 58 and retraction pull rope 28, makes transfer arm 25 reset along mobile chute and stretch out certain distance for clamping the follow-up potsherd put under the restoring force effect of stretching out back-moving spring 26; Simultaneously, under the effect swinging back-moving spring 56, swing chuck 55 and swing handle 51 also spinning reduction, swinging chuck 55 to transfer arm 25 position in opposite directions, clamp potsherd together with transfer arm 25, thus upper adhesives and the application work of potsherd can be carried out continuously.This splicing machine fuselage is light portable, can be compacted to metope quickly and efficiently, avoid free-hand beating to knock potsherd by smooth for potsherd, and the low and Loss reducing of working strength, pastes smooth solid.
More preferably, described metope stick ceramic machine is provided with the clamping controlling organization 50 being installed on mainframe 10, described clamping controlling organization 50 comprises the ratchet 30 being installed on described mainframe 10, be positioned at the driving tooth bar 35 that described ratchet 30 side also can promote ratchet 30 single direction rotation, be articulated with described mainframe 10 and be positioned at described ratchet 30 opposite side stop ratchet 30 reversely rotate non-return location tooth bar 32, be articulated with mainframe 10 and the swing connecting bar 36 hinged with driving tooth bar 35, be installed on mainframe 10 and top pressure non-return location tooth bar 32 dorsal part makes non-return location tooth bar 32 be flapped toward the short conjunction spring 33 of ratchet 30 or other elasticity urgees locking device, be installed on mainframe 10 and with the winder 31 of described ratchet 30 synchronous rotary, retraction pull rope 28 is connected with swing pull rope 58 and is set around this winder 31.Promote to order about ratchet 30 to rotate by driving tooth bar 35, winder 31 is rotated rotary course thus tractive retraction pull rope 28 and swing pull rope 58 make transfer arm 25 bounce back and make swing chuck 55 be swung away from potsherd.The ratchet of ratchet 30 crosses the ratchet of non-return location tooth bar 32 at rotary course, when stopping the rotation, the ratchet of non-return location tooth bar 32 and ratchet 30 blocks mutually and realize locating, and make swing chuck 55 maintenance arrange state transfer arm 25 and are in advanced position.Take off metope stick ceramic machine, at supporting station 15 placing ceramic sheet, can then break non-return location tooth bar 32 into two with one's hands, swing chuck 55 and transfer arm 25 reset and clamp potsherd under action of reset spring.Elasticity urgees locking device to be forced non-return location tooth bar 32 to be flapped toward ratchet 30 thus blocks ratchet 30 and hinder it to reversely rotate, and promotes to drive tooth bar 35 can make ratchet 30 single direction rotation.Tooth bar 35 is driven to drive tooth bar 35 can keep engaging with ratchet 30 is tangent in pushing course with hinged the making of swing connecting bar 36.
More preferably, the tooth bar back-moving spring 38 ordering about and drive the axial return of tooth bar 35 is provided with between described swing connecting bar 36 and mainframe 10, tooth bar 35 is driven to be pushed or to pull a stroke, ratchet 30 rotates and after being stuck in non-return location tooth bar 32, decontrol and drive tooth bar 35 under the effect of tooth bar back-moving spring 38, drive tooth bar 35 to arrange and depart from ratchet 30 and retreat, thus can continue to increase stroke, cumulative stroke, makes the stroke that pull rope tractive is enough repeatedly.
More preferably, described driving tooth bar 35 and the outer of non-return location tooth bar 32 are arranged with the limitting casing limiting skew space, side, tooth bar both sides, tooth bar is avoided to offset to both sides, the degree of freedom of restriction tooth bar, make to drive tooth bar 35 along the tangential reach of ratchet 30 and retrogressing, to ratchet side or the swing of relative rear side thus near ratchet engagement or can leave ratchet 30; Also make the non-return location tooth bar 32 being articulated with mainframe 10 only along close ratchet or the direction swing leaving ratchet.
More preferably, described swing connecting bar 36 swings handle 37 to extending to form away from driving tooth bar 35 side, as holds handle, avoid directly gripping driving tooth bar, be convenient to utilize the light tractive of leverage to drive tooth bar 35, the rear side of tooth bar 35 is driven to be provided with elastic reset part 39, elastic reset part 39 slides with driving tooth bar 35 and abuts, make to drive tooth bar 35 to make to drive the ratchet of tooth bar 35 to cross the ratchet of ratchet 30 to the skew of ratchet dorsal part and to retreat, then tooth bar 35 can be driven to make it engage with ratchet 30 make to drive tooth bar 35 to promote ratchet and rotate by jacking again.
More preferably, described non-return location tooth bar 32 and drive tooth bar 35 to be all be provided with the ratchet bar arranging ratchet coordinated with ratchet 30, all elastomeric element is provided with on rear side of non-return location tooth bar 32 and driving tooth bar 35, overcome corresponding elastomeric element and two tooth bars can be made it offset to leave the ratchet of ratchet 30 respectively to leaving rolling to each side of ratchet 30, ratchet 30 swing back-moving spring 56 and stretch out back-moving spring 26 by the traction action of pull rope under reversely rotate, thus realize unclamping pull rope 28/58, make to swing chuck 55 and transfer arm 25 and to automatically reset clamping potsherd.
More preferably, described mainframe 10 comprises bracing frame 11 and the adjustable Extension support 12 being deeply plugged in amount support frame as described above front end, described transfer arm 25 and front clamp device 50 are arranged at the rear end of bracing frame 11 and the front end of Extension support 12 respectively, regulate the grafting of Extension support 12 deeply to measure and can regulate transfer arm 25 and the horizontal range swinging chuck 55, thus the potsherd being applicable to different size uses.
More preferably, described bumper jar 13 comprise the motor 20 being fixedly installed in described mainframe 10, the anxious swivelling arm 21 of the bias driven by motor output shaft, be positioned at the power rack 16 that can move back and forth perpendicular to supporting station inside supporting station 15, be fixedly connected on power rack 16 and by eccentric anxious swivelling arm be interrupted stir swinging plate 22, the power spring 19 that described power rack 16 resets to supporting station 15 side can be promoted.Rotated by the eccentric anxious swivelling arm 21 of the rotary actuation of motor 20, and then the related power rack 16 of promotion swinging plate 22 moves to the direction away from supporting station, then eccentric anxious swivelling arm 21 is departed from, under power spring 19 acts on, propulsion power frame 16 resets to supporting station direction and beats and knocks supporting station 15, realizes knocking the vibrations of potsherd.
More preferably, described power rack 16 is fixedly connected with by the vertical rod 17 perpendicular to supporting station 15, described mainframe 10 is fixedly connected with and is sheathed on the positioning sleeve 18 that vertical rod 17 is vertical rod 17 orientation guiding, described power spring 19 is sheathed on vertical rod 17, vertical rod 17, positioning sleeve 18 coordinate socket to realize positioning power rack 16 and leading, and ensure that power rack 16 and supporting station 15 face are beaten contiguously and knock.Also positioning sleeve can be fixedly connected with power rack, and vertical rod is fixedly connected with mainframe.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.

Claims (9)

1. a metope stick ceramic machine, it is characterized in that: comprise mainframe, be located at the supporting station at mainframe end face place, be located at supporting station bottom side knock supporting station make its compacting potsherd be closely attached on metope bumper jar, be respectively located at mainframe rear and front end for clamp potsherd transfer arm and swing clamping device, transfer arm telescopically is installed on mobile chute that described mainframe offers and is connected with mainframe by stretching out back-moving spring, and transfer arm is connected with retraction pull rope;
Described swing clamping device comprise be articulated with mainframe swing handle, be fixedly installed on swing handle free end and can stop at mainframe end face place swing chuck, connect swing that handle and mainframe make that swing chuck stops at the swing back-moving spring at mainframe end face place, coaxial or bias be installed on swing handle jointed shaft and with the rotating disc of swing handle synchronous rotary, be connected and be set around the swing pull rope of rotating disc outer peripheral face, described transfer arm part stretch out mainframe end face and with swing the relative both ends being positioned at mainframe of chuck.
2. metope stick ceramic machine according to claim 1, it is characterized in that: described metope stick ceramic machine is provided with the clamping controlling organization being installed on mainframe, described clamping controlling organization comprises the ratchet being installed on described mainframe, be positioned at the driving tooth bar that described ratchet side also can promote ratchet one-way rotation, be articulated with described mainframe and be positioned at described ratchet opposite side stop ratchet reversely rotate non-return location tooth bar, be articulated with mainframe and the swing connecting bar hinged with driving tooth bar, being installed on mainframe and pushing up presses the elasticity driving tooth bar dorsal part to make driving tooth bar be flapped toward ratchet to urge locking device, be installed on mainframe and with the winder of described ratchet synchronous rotary, described retraction pull rope is connected with swing pull rope and is set around this winder.
3. metope stick ceramic machine according to claim 2, is characterized in that: be provided with the tooth bar back-moving spring ordering about and drive the axial return of tooth bar between described swing connecting bar and mainframe.
4. metope stick ceramic machine according to claim 2, is characterized in that: described driving tooth bar and the outer of non-return location tooth bar are arranged with the limitting casing limiting skew space, side, tooth bar both sides.
5. metope stick ceramic machine according to claim 2, is characterized in that: described swing connecting bar extends to form swing handle to away from driving tooth bar side, drives the rear side of tooth bar to be provided with elastic reset part, and elastic reset part slides with driving tooth bar and abuts.
6. metope stick ceramic machine according to claim 2, is characterized in that: described non-return location tooth bar and drive tooth bar to be all be provided with the ratchet bar arranging ratchet coordinated with ratchet.
7. metope stick ceramic machine according to claim 1, it is characterized in that: described mainframe comprises bracing frame and the adjustable Extension support being deeply plugged in amount support frame as described above front end, and described transfer arm and front clamp device are arranged at the rear end of bracing frame and the front end of Extension support respectively.
8. metope stick ceramic machine according to claim 1, is characterized in that: described bumper jar comprises the motor being fixedly installed in described mainframe, the anxious swivelling arm of the bias driven by motor output shaft, is positioned at the power rack that can move back and forth perpendicular to supporting station inside supporting station, is fixedly connected on power rack and is interrupted by eccentric anxious swivelling arm the swinging plate stirred.
9. metope stick ceramic machine according to claim 8, it is characterized in that: described power rack is fixedly connected with by the vertical rod perpendicular to supporting station, described mainframe is fixedly connected with and is sheathed on the positioning sleeve that vertical rod is vertical rod orientation guiding, and described vertical rod sleeve is provided with the power spring that can promote described power rack and reset to supporting station side.
CN201420457954.0U 2014-08-14 2014-08-14 A kind of metope stick ceramic machine Withdrawn - After Issue CN204040427U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420457954.0U CN204040427U (en) 2014-08-14 2014-08-14 A kind of metope stick ceramic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420457954.0U CN204040427U (en) 2014-08-14 2014-08-14 A kind of metope stick ceramic machine

Publications (1)

Publication Number Publication Date
CN204040427U true CN204040427U (en) 2014-12-24

Family

ID=52241110

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420457954.0U Withdrawn - After Issue CN204040427U (en) 2014-08-14 2014-08-14 A kind of metope stick ceramic machine

Country Status (1)

Country Link
CN (1) CN204040427U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104120865A (en) * 2014-08-14 2014-10-29 曹妙 Ceramic pasting machine for walls
CN108252500A (en) * 2018-01-22 2018-07-06 王守鹏 A kind of novel multi-functional full-automatic floor tile machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104120865A (en) * 2014-08-14 2014-10-29 曹妙 Ceramic pasting machine for walls
CN104120865B (en) * 2014-08-14 2016-04-13 曹妙 A kind of metope stick ceramic machine
CN108252500A (en) * 2018-01-22 2018-07-06 王守鹏 A kind of novel multi-functional full-automatic floor tile machine
CN108252500B (en) * 2018-01-22 2021-05-18 广东非凡实业投资有限公司 Multifunctional full-automatic floor tile paving machine

Similar Documents

Publication Publication Date Title
CN201284725Y (en) Wind power generation blade web plate positioning device
CN209222448U (en) A kind of fixed device of hardware spray painting convenient to use
CN204040427U (en) A kind of metope stick ceramic machine
CN208759190U (en) A kind of wall surface grinding device for facilitating corner to polish
CN111746100A (en) Portable handrail post water transfer means
CN104120865B (en) A kind of metope stick ceramic machine
CN106671071B (en) Brick carrying robot
CN204664083U (en) Panel and substrate assembly tool
CN204324378U (en) A kind of mobile feeding clip mechanism
CN204189888U (en) A kind of Semi-automatic film sticking machine of battery cylindrical shell
CN210475109U (en) Portable building steel structure bending equipment
CN201859856U (en) Bonding press block device
CN111688403A (en) Novel ceramic rotator drawing roller device
CN108001020B (en) Automobile interior film sticking machine
CN203716516U (en) Clamping mechanism for tensioning carbon fiber sheet
CN214980744U (en) Equipment is screwed up to reinforcing bar straight thread sleeve
CN210650192U (en) Welding fork grinding clamp
CN205289376U (en) A swivel work head for bending center
CN104179337A (en) Novel wall plastering machine
CN208363631U (en) A kind of aluminum alloy building template cleaning concrete equipment
CN207841376U (en) A kind of rotation clamp system of carrying implement
CN205708808U (en) A kind of plastic member feeding mechanism
CN201581619U (en) Hand-push roof plastering machine
CN104444359A (en) Movable material clamping mechanism
CN210263818U (en) Wall tile tool for building

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20141224

Effective date of abandoning: 20160413

C25 Abandonment of patent right or utility model to avoid double patenting