AU2019202095B1 - A length-adjustable pen - Google Patents
A length-adjustable pen Download PDFInfo
- Publication number
- AU2019202095B1 AU2019202095B1 AU2019202095A AU2019202095A AU2019202095B1 AU 2019202095 B1 AU2019202095 B1 AU 2019202095B1 AU 2019202095 A AU2019202095 A AU 2019202095A AU 2019202095 A AU2019202095 A AU 2019202095A AU 2019202095 B1 AU2019202095 B1 AU 2019202095B1
- Authority
- AU
- Australia
- Prior art keywords
- block
- blocks
- grooves
- telescopic
- adjustment mechanism
- 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.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K3/00—Nib holders
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
- Catching Or Destruction (AREA)
Abstract
This invention discloses a length-adjustable pen, including a pen holder (10), and an adjustment mechanism (60) is disposed in the pen holder (10), wherein the adjustment mechanism (60) comprises an adjusting block (37), driving gears (33), transmission gears (55) and crossbars (24). The adjusting block (37) is rotated, and the meshing transmission of the driving gears (33) and the transmission gears (55) can drive the crossbars (24) on two sides to rotate in opposite directions, wherein the lower side of the adjustment mechanism (60) is provided with three of limiting mechanisms (18); the device is simple in structure, and is convenient to operate, as its length is able to be adjusted, so as to meet the needs of various users; moreover, the thickness is kept unchanged before and after the length adjustment, so that the good using experience is maintained.
Description
A LENGTH-ADJUSTABLE PEN
TECHNICAL FIELD [0001] The present invention relates to the field of writing supplies, in particular to a length-adjustable pen.
BACKGROUND OF THE INVENTION [0002] Pen is a writing tool, and people start practicing pen from a very young age. It can be said that pen is a tool to accompany people for a lifetime. However, the existing pen does not consider the comfort of different groups of people comprehensively. Designing two kinds of pens for children and adults separately will be wasting production resources in some ways.
BRIEF SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the invention is to provide a length-adjustable pen so as to overcome the problems in the above background art.
[0004] To achieve the above goal, the invention provides the following technical proposal: a length-adjustable pen comprises a pen holder, and an adjustment mechanism is disposed in the pen holder; wherein the adjustment mechanism comprises an adjusting block, driving gears, transmission gears and crossbars; the adjusting block is rotated, and meshing transmission of the driving gears and the transmission gears can drive the crossbars on a front side and a rear side to rotate in opposite directions; wherein the adjustment mechanism further comprises three of telescopic blocks, and the crossbars can block two of the telescopic blocks from approaching each other; wherein the adjustment mechanism further comprises a refill, a pen tip threadedly engaged with the pen holder, and rubber blocks which are resilient, and when the pen tip is completely threadedly engaged with the pen holder, the refill can be stuck, and when no external force is applied to the telescopic blocks, the telescopic blocks can be maintained by the rubber blocks in certain shapes; wherein a lower side of the adjustment mechanism is provided with three of limiting mechanisms, and the limiting mechanisms include diagonal rods that are able to block the refill, and any two of the diagonal rods, which
2019202095 23 Apr 2019 are adjacent, are rotatably connected to each other, and when the telescopic blocks are close to each other, the diagonal rods can be swung to a position that the refills is not blocked; wherein the adjustment mechanism further comprises a triangular block, three of blocking grooves and a pressure spring which is compressed, and when three of the telescopic blocks are pushed down respectively, the triangular block can be blocked into the three of the blocking grooves respectively under the reset action of the pressure spring; wherein the adjustment mechanism further comprises a vertical block, a guide block and two of lifting grooves, and the vertical block and the guide block can guide the moving direction of the telescopic blocks in the lifting grooves; wherein the adjustment mechanism further comprises a switching block and two of functional grooves blocking the switching block, wherein the adjusting block can drive the switching block to rotate.
[0005] As an optimized technical proposal, the adjustment mechanism comprises the lifting grooves, and a lower end of the pen holder is threadedly engaged with the pen tip, wherein the pen holder is provided with a cylindrical groove therein, and the lifting grooves are symmetrically disposed on two end walls of the cylindrical groove, wherein one end wall of one of the lifting grooves is evenly distributed with three of the blocking grooves; the refill is slidably disposed in the cylindrical groove, and three of the telescopic blocks are uniformly distributed on an upper side of the pen holder; wherein two of the rubber blocks are symmetrically embedded in the telescopic blocks, and extending grooves communicating with each other are set in the telescopic blocks; the vertical block slidably connected to one of the lifting grooves is fixed to one side of a lower end surface of the telescopic block on a lower side, and one end surface of the vertical block is provided with a pressure groove, wherein one end wall of the pressure groove is fixedly provided with the pressure spring, wherein one end of the pressure spring is fixedly provided with the triangular block; the guide block slidably connected to one of the lifting grooves is fixed to the other side of the lower end surface of the telescopic block on the lower side;
[0006] Wherein, moving grooves are symmetrically arranged in a lower end surface of the telescopic block at a middle, and moving blocks slidably connected to the moving grooves are fixed to an upper end surface of the telescopic block at the lower side; the lower end surface of the telescopic block at an upper side is symmetrically provided with translation grooves, and translation blocks slidably connected to one of the translation grooves is symmetrically fixed to an upper end surface of the telescopic block at the middle; a top block is fixedly set
2019202095 23 Apr 2019 on an upper end surface of one of the telescopic blocks, and a circular groove is set in the top block, wherein two end walls of the circular groove are symmetrically provided with the functional grooves, wherein an elliptical groove is set in a lower end wall of the circular groove, and a drive shaft whose upper end is located outside the length-adjustable pen is rotationally disposed at a lower end wall of the elliptical groove, wherein the drive shaft is fixedly provided with the driving gears and a circular block;
[0007] Wherein, one end surface of the circular block is provided with a switching groove, wherein a switching spring is fixedly set on one end wall of the switching groove, and the switching block is fixedly set on one end of the switching spring; the adjusting block is fixedly set at an upper end of the drive shaft, and transmission shafts symmetrically and rotatably set at an upper end wall of the elliptical groove, and the transmission gears meshing with the driving gears are fixedly set on the transmission shafts, and three of the crossbars are fixedly set at lower ends of the transmission shafts,wherein the crossbars are fixedly connected with each other by a support rod; one end surface of the crossbar on a rear side is fixedly provided with limit rods, and short rods are rotationally disposed on the limit rods; torque springs are disposed between the limit rods and the short rods, and the adjusting block drives the driving gears to rotate, and the engagement of the driving gears and the transmission gears drives the transmission gears to rotate.
[0008] As an optimized technical proposal, the limiting mechanisms comprises curved blocks, the curved blocks are symmetrically and fixedly set at two sides of the extending grooves; the upper end surface of each of the curved blocks is fixedly provided with a respective one of force receiving rods, wherein each of the force receiving rods is respectively provided with two of ring grooves, and a respective one of ring blocks is rotationally disposed on each of the ring grooves; one end of each of the ring blocks is fixedly provided with a respective one of the diagonal rods, and the diagonal rods on two sides are both rotatingly connected with a middle block; moreover, the curved blocks close to each other to drive the diagonal rods to swing.
[0009] In summary, the benefits of the invention are: the device is simple in structure and is convenient to operate, as its length is able to be adjusted, so as to meet the needs of various users; moreover, the thickness is kept unchanged before and after the length adjustment, so that the good using experience is maintained.
2019202095 23 Apr 2019
BRIEF DESCRIPTION OF THE DRAWINGS [0010] FIG. 1 is the full-sectional schematic structural diagram from a front view of a length-adjustable pen in this invention;
[0011] FIG. 2 is the enlarged schematic structural diagram of the drive shaft of a lengthadjustable pen in this invention;
[00012] FIG. 3 is the cross-sectional schematic structural diagram from a top view of the telescopic block on the lower side of a length-adjustable pen in this invention;
[00013] FIG. 4 is the cross-sectional schematic structural diagram from a top view of the elliptical groove of a length-adjustable pen in this invention.
DETAILED DESCRIPTION OF THE INVENTION [0014] All features disclosed in this specification, or all methods or steps in the processes disclosed, can be combined in any manner except for than mutually exclusive features and/or steps.
[0015] Referring to Figures 1-4, a length-adjustable pen according to an embodiment of the present invention, comprises a pen holder 10, and an adjustment mechanism 60 is disposed in the pen holder 10; wherein the adjustment mechanism 60 comprises an adjusting block 37, driving gears 33, transmission gears 55 and crossbars 24; the adjusting block 37 is rotated, and meshing transmission of the driving gears 33 and the transmission gears 55 can drive the crossbars 24 on a front side and a rear side to rotate in opposite directions; wherein the adjustment mechanism 60 further comprises three of telescopic blocks 17, and the crossbars 24 can block two of the telescopic blocks 17 from approaching each other; wherein the adjustment mechanism 60 further comprises a refill 30, a pen tip 31 threadedly engaged with the pen holder 10, and rubber blocks 52 which are resilient, and when the pen tip 31 is completely threadedly engaged with the pen holder 10, the refill 30 can be stuck, and when no external force is applied to the telescopic blocks 17, the telescopic blocks 17 can be maintained by the rubber blocks 52 in certain shapes; wherein a lower side of the adjustment mechanism 60 is provided with three of limiting mechanisms 18, and the limiting mechanisms
2019202095 23 Apr 2019 include diagonal rods 49 that are able to block the refill 30, and any two of the diagonal rods 49, which are adjacent, are rotatably connected to each other, and when the telescopic blocks 17 are close to each other, the diagonal rods 49 can be swung to a position that the refills 30 is not blocked; wherein the adjustment mechanism 60 further comprises a triangular block 15, three of blocking grooves 32 and a pressure spring 14 which is compressed, and when three of the telescopic blocks 17 are pushed down respectively, the triangular block 15 can be blocked into the three of the blocking grooves 32 respectively under the reset action of the pressure spring 14; wherein the adjustment mechanism 60 further comprises a vertical block 13, a guide block 29 and two of lifting grooves 11, and the vertical block 13 and the guide block 29 can guide the moving direction of the telescopic blocks 17 in the lifting grooves 11; wherein the adjustment mechanism 60 further comprises a switching block 40 and two of functional grooves 34 blocking the switching block 40, wherein the adjusting block 37 can drive the switching block 40 to rotate.
[0016] Advantageously, the adjustment mechanism 60 comprises the lifting grooves 11, and a lower end of the pen holder 10 is threadedly engaged with the pen tip 31, wherein the pen holder 10 is provided with a cylindrical groove 12 therein, and the lifting grooves 11 are symmetrically disposed on two end walls of the cylindrical groove 12, wherein one end wall of one of the lifting grooves 11 is evenly distributed with three of the blocking grooves 32; the refill 30 is slidably disposed in the cylindrical groove 12, and three of the telescopic blocks 17 are uniformly distributed on an upper side of the pen holder 10; wherein two of the rubber blocks 52 are symmetrically embedded in the telescopic blocks 17, and extending grooves 27 communicating with each other are set in the telescopic blocks 17; the vertical block 13 slidably connected to one of the lifting grooves 11 is fixed to one side of a lower end surface of the telescopic block 17 on a lower side, and one end surface of the vertical block 13 is provided with a pressure groove 16 , wherein one end wall of the pressure groove 16 is fixedly provided with the pressure spring 14, wherein one end of the pressure spring 14 is fixedly provided with the triangular block 15; the guide block 29 slidably connected to one of the lifting grooves 11 is fixed to the other side of the lower end surface of the telescopic block 17 on the lower side;
[0017] Wherein, moving grooves 20 are symmetrically arranged in a lower end surface of the telescopic block 17 at a middle, and moving blocks 19 slidably connected to the moving grooves 20 are fixed to an upper end surface of the telescopic block 17 at the lower side; the
2019202095 23 Apr 2019 lower end surface of the telescopic block 17 at an upper side is symmetrically provided with translation grooves 23, and translation blocks 22 slidably connected to one of the translation grooves 23 is symmetrically fixed to an upper end surface of the telescopic block 17 at the middle; a top block 25 is fixedly set on an upper end surface of one of the telescopic blocks 17, and a circular groove 35 is set in the top block 25, wherein two end walls of the circular groove 35 are symmetrically provided with the functional grooves 34, wherein an elliptical groove 41 is set in a lower end wall of the circular groove 35, and a drive shaft 26 whose upper end is located outside the length-adjustable pen is rotationally disposed at a lower end wall of the elliptical groove 41, wherein the drive shaft 26 is fixedly provided with the driving gears 33 and a circular block 36;
[0018] Wherein, one end surface of the circular block 36 is provided with a switching groove 38, wherein a switching spring 39 is fixedly set on one end wall of the switching groove 38, and the switching block 40 is fixedly set on one end of the switching spring 39; the adjusting block 37 is fixedly set at an upper end of the drive shaft 26, and transmission shafts 42 symmetrically and rotatably set at an upper end wall of the elliptical groove 41, and the transmission gears 55 meshing with the driving gears 33 are fixedly set on the transmission shafts 42, and three of the crossbars 24 are fixedly set at lower ends of the transmission shafts 42,wherein the crossbars 24 are fixedly connected with each other by a support rod 51; one end surface of the crossbar 24 on a rear side is fixedly provided with limit rods 44, and short rods 43 are rotationally disposed on the limit rods 44; torque springs 53 are disposed between the limit rods 44 and the short rods 43, and the adjusting block 37 drives the driving gears 33 to rotate, and the engagement of the driving gears 33 and the transmission gears 55 drives the transmission gears 55 to rotate.
[0019] Advantageously, the limiting mechanisms 18 comprises curved blocks 48, the curved blocks 48 are symmetrically and fixedly set at two sides of the extending grooves 27; the upper end surface of each of the curved blocks 48 is fixedly provided with a respective one of force receiving rods 45, wherein each of the force receiving rods 45 is respectively provided with two of ring grooves 47, and a respective one of ring blocks 46 is rotationally disposed on each of the ring grooves 47; one end of each of the ring blocks 46 is fixedly provided with a respective one of the diagonal rods 49, and the diagonal rods 49 on two sides are both rotatingly connected with a middle block 50; moreover, the curved blocks 48 close to each other to drive the diagonal rods 49 to swing.
2019202095 23 Apr 2019 [0020] In the following, the applicant will describe in detail the use of a length-adjustable pen according to the specific composition of the length-adjustable pen of the present application with reference to FIGS. 1-4 and the above description:
[0021] when it is necessary to shorten the device, the adjusting block 37 is rotated, so that the switching block 40 is rotated into the function groove 34 on one side, and by the engagement of the driving gears 33 with the transmission gears 55, the transmission shafts 42 are driven to to rotate, thereby driving the crossbars 24 to rotate; at this time, the telescopic block 17 at the lowermost side is squeezed, so that four of the diagonal rods 49 are driven to swing to a position where the diagonal rods 49 don’t block the refill 30; and then the telescopic blocks 17 are pushed downward into the lifting grooves 11, and the triangular block 15 is lowered to one of the blocking slots 32 and stuck as the telescopic blocks 17 are lowered, and then the telescopic block 17 at the middle and the telescopic block 17 at the lower side are squeezed, which makes the device shorter; when the device is required to be lengthened, the extending grooves 27 are pulled to pull the triangular block 15 out of the blocking grooves 32, so that the device is extended; and when it is necessary to use the device, the adjusting block 37 is rotated to drive the switching block 40 to rotate into the function groove 34 at one side, thereby driving the crossbars 24 to rotate to the position where the telescopic blocks 17 are blocked, which makes the device impossible to adjust its length.
[0022] The benefits of the invention are: the device is simple in structure, and is convenient to operate, as its length is able to be adjusted, so as to meet the needs of various users; moreover, the thickness is kept unchanged before and after the length adjustment, so that the good using experience is maintained.
[0023] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions without creative efforts shall fall within the protection scope of the present invention. Therefore, the claimed protection extent of the invention shall be determined with reference to the appended claims.
2019202095 23 Apr 2019
Claims (3)
1. A length-adjustable pen, comprising:
a pen holder, wherein an adjustment mechanism is disposed in the pen holder;
wherein the adjustment mechanism comprises an adjusting block, driving gears, transmission gears and crossbars;
wherein the adjusting block is rotated, and meshing transmission of the driving gears and the transmission gears can drive the crossbars on a front side and a rear side to rotate in opposite directions;
wherein the adjustment mechanism further comprises three of telescopic blocks, and the crossbars can block two of the telescopic blocks from approaching each other;
wherein the adjustment mechanism further comprises a refill, a pen tip threadedly engaged with the pen holder, and rubber blocks which are resilient, and when the pen tip is completely threadedly engaged with the pen holder, the refill can be stuck, and when no external force is applied to the telescopic blocks, the telescopic blocks can be maintained by the rubber blocks in certain shapes;
wherein a lower side of the adjustment mechanism is provided with three of limiting mechanisms, and the limiting mechanisms include diagonal rods that are able to block the refill, and any two of the diagonal rods, which are adjacent, are rotatably connected to each other, and when the telescopic blocks are close to each other, the diagonal rods can be swung to a position that the refills is not blocked;
wherein the adjustment mechanism further comprises a triangular block, three of blocking grooves and a pressure spring which is compressed, and when three of the telescopic blocks are pushed down respectively, the triangular block can be blocked into the three of the blocking grooves respectively under the reset action of the pressure spring;
2019202095 23 Apr 2019 wherein the adjustment mechanism further comprises a vertical block, a guide block and two of lifting grooves, and the vertical block and the guide block can guide the moving direction of the telescopic blocks in the lifting grooves;
wherein the adjustment mechanism further comprises a switching block and two of functional grooves blocking the switching block;
whereby the adjusting block can drive the switching block to rotate.
2. The length-adjustable pen as defined in claim 1, wherein the adjustment mechanism comprises the lifting grooves, and a lower end of the pen holder is threadedly engaged with the pen tip;
wherein the pen holder is provided with a cylindrical groove therein, and the lifting grooves are symmetrically disposed on two end walls of the cylindrical groove;
wherein one end wall of one of the lifting grooves is evenly distributed with three of the blocking grooves;
the refill is slidably disposed in the cylindrical groove, and three of the telescopic blocks are uniformly distributed on an upper side of the pen holder;
wherein two of the rubber blocks are symmetrically embedded in the telescopic blocks, and extending grooves communicating with each other are set in the telescopic blocks;
the vertical block slidably connected to one of the lifting grooves is fixed to one side of a lower end surface of the telescopic block on a lower side, and one end surface of the vertical block is provided with a pressure groove;
wherein one end wall of the pressure groove is fixedly provided with the pressure spring;
wherein one end of the pressure spring is fixedly provided with the triangular block;
the guide block slidably connected to one of the lifting grooves is fixed to the other side of the lower end surface of the telescopic block on the lower side;
2019202095 23 Apr 2019 wherein, moving grooves are symmetrically arranged in a lower end surface of the telescopic block at a middle, and moving blocks slidably connected to the moving grooves are fixed to an upper end surface of the telescopic block at the lower side;
the lower end surface of the telescopic block at an upper side is symmetrically provided with translation grooves, and translation blocks slidably connected to one of the translation grooves is symmetrically fixed to an upper end surface of the telescopic block at the middle;
a top block is fixedly set on an upper end surface of one of the telescopic blocks, and a circular groove is set in the top block;
wherein two end walls of the circular groove are symmetrically provided with the functional grooves;
wherein an elliptical groove is set in a lower end wall of the circular groove, and a drive shaft whose upper end is located outside the length-adjustable pen is rotationally disposed at a lower end wall of the elliptical groove;
wherein the drive shaft is fixedly provided with the driving gears and a circular block;
wherein, one end surface of the circular block is provided with a switching groove, wherein a switching spring is fixedly set on one end wall of the switching groove, and the switching block is fixedly set on one end of the switching spring;
the adjusting block is fixedly set at an upper end of the drive shaft, and transmission shafts symmetrically and rotatably set at an upper end wall of the elliptical groove, and the transmission gears meshing with the driving gears are fixedly set on the transmission shafts, and three of the crossbars are fixedly set at lower ends of the transmission shafts;
wherein the crossbars are fixedly connected with each other by a support rod;
whereby one end surface of the crossbar on a rear side is fixedly provided with limit rods, and short rods are rotationally disposed on the limit rods;
2019202095 23 Apr 2019 torque springs are disposed between the limit rods and the short rods;
whereby the adjusting block drives the driving gears to rotate, and the engagement of the driving gears and the transmission gears drives the transmission gears to rotate.
3. The length-adjustable pen as defined in claim 2, wherein the limiting mechanisms comprises curved blocks, and the curved blocks are symmetrically and fixedly set at two sides of the extending grooves;
the upper end surface of each of the curved blocks is fixedly provided with a respective one of force receiving rods;
wherein each of the force receiving rods is respectively provided with two of ring grooves, and a respective one of ring blocks is rotationally disposed on each of the ring grooves;
one end of each of the ring blocks is fixedly provided with a respective one of the diagonal rods;
whereby the diagonal rods on two sides are both rotatingly connected with a middle block; moreover, the curved blocks close to each other to drive the diagonal rods to swing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019102090452 | 2019-03-19 | ||
| CN201910209045 | 2019-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2019202095B1 true AU2019202095B1 (en) | 2019-05-23 |
Family
ID=66547589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019202095A Ceased AU2019202095B1 (en) | 2019-03-19 | 2019-03-26 | A length-adjustable pen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110435329A (en) |
| AU (1) | AU2019202095B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233610A (en) * | 1989-06-30 | 1991-01-16 | Mark Aubrey Searles | Compact pen with extendable body |
| US6752557B1 (en) * | 2003-10-23 | 2004-06-22 | Ming-Jen Hsieh | Retractile pen |
| CN201165114Y (en) * | 2008-01-21 | 2008-12-17 | 何政龙 | Adjustable telescopic pen |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2508973Y (en) * | 2001-11-27 | 2002-09-04 | 黄松朝 | Gear type writing core nib follow-up telescoping pen |
| CN2561593Y (en) * | 2002-07-29 | 2003-07-23 | 黎巨章 | Telescopic writing tools |
| CN2811014Y (en) * | 2005-06-22 | 2006-08-30 | 青岛昌隆文具有限公司 | Double-head pen |
| CN202847197U (en) * | 2012-07-17 | 2013-04-03 | 宁波大学科学技术学院 | Pen having adjustable pen holder length |
| CN103935157B (en) * | 2014-05-06 | 2016-08-17 | 陈良彬 | A kind of Intelligent writing pen structure |
| CN106113993A (en) * | 2016-07-22 | 2016-11-16 | 南京理工大学 | A kind of portable telescopic pen |
-
2019
- 2019-03-26 AU AU2019202095A patent/AU2019202095B1/en not_active Ceased
- 2019-08-26 CN CN201910791773.9A patent/CN110435329A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233610A (en) * | 1989-06-30 | 1991-01-16 | Mark Aubrey Searles | Compact pen with extendable body |
| US6752557B1 (en) * | 2003-10-23 | 2004-06-22 | Ming-Jen Hsieh | Retractile pen |
| CN201165114Y (en) * | 2008-01-21 | 2008-12-17 | 何政龙 | Adjustable telescopic pen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110435329A (en) | 2019-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |