US20030137123A1 - Frictionless bicycle stopping device - Google Patents
Frictionless bicycle stopping device Download PDFInfo
- Publication number
- US20030137123A1 US20030137123A1 US10/057,267 US5726702A US2003137123A1 US 20030137123 A1 US20030137123 A1 US 20030137123A1 US 5726702 A US5726702 A US 5726702A US 2003137123 A1 US2003137123 A1 US 2003137123A1
- Authority
- US
- United States
- Prior art keywords
- axle
- crank shaft
- bicycle
- drive
- clutch
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62L—BRAKES SPECIALLY ADAPTED FOR CYCLES
- B62L5/00—Brakes, or actuating mechanisms therefor, controlled by back-pedalling
Abstract
A bicycle braking device includes a second drive assembly between the crank shaft and the rear axle of the bicycle. The second drive assembly includes a chain drive and pair of engaged gears for reversing the direction of rotation of the crank shaft with respect to the rear axle when the second drive is engaged. The device further includes a clutch for selectively engaging or disengaging the assembly. When the bicycle is moving forward and the second drive is engaged, the pedals will rotate in reverse of the direction of rotation required to propel the bicycle forward. A bicycle rider can apply force through his feet and legs against the rotating pedals to thereby slow and stop a moving bicycle.
Description
- The present invention relates to bicycles and, in particular, to an improved method and apparatus for slowing and stopping a bicycle without employing friction type brakes.
- The rider of a bicycle is capable of riding it at substantial speeds. To ride safely, however, a rider must be able to slow and stop his bicycle to prevent injury to himself and to others. There are presently only two commonly used structural systems for slowing and stopping a bicycle, friction brakes and coaster brakes. Coaster brakes are themselves a friction break, employing friction between two surfaces in the rear axle of a chain driven two-wheeled bicycle. When the pedals of the bicycle are rotated in a forward direction the gearing applies rotational force to the wheel, but when the pedals are driven in the reverse direction the rear wheel is locked against rotation with respect to the bicycle frame.
- Coaster brakes are useable on a bicycle with a chain drive which can apply force through the chain during both forward rotation and rearward rotation. Modern bicycles, however, provide the rider with a multiplicity of gear ratios so the rider can apply his muscles with the most efficient effect. The changing of the gear ratios is accomplished by either a changing of the gearing in the axel of the bicycle, or by changing of the ratios of the diameters of the chain sprockets on the axle and on the foot crank respectively. Coaster brake are not useable with either type of the presently available multi speed drive systems, and therefor friction brakes have been used on multi speed bicycles. Friction brakes have a caliper mounted on the frame near the outer rim of the wheel and the caliper is controlled by a lever mounted on the handlebars. When the rider actuates the lever, the calipers compress two brake pads around the rim of the wheel causing friction to slow and stop the bicycle.
- There are limitations to the control available to a bicycle fitted with friction type brakes. For example, a friction brake that abruptly locks the rotation of the front wheel can flip the bicycle over and cause injury to the rider. It would be desirable, therefore, to provide a method and apparatus for slowing a bicycle without relying on friction. It would also be desirable to provide an alternative method for slowing a bicycle that could be used in conjunction with multi speed drive systems of the type currently available in bicycles.
- Briefly, the present invention is embodied in a bicycle having a frame and front and rear axles with wheels mounted thereon. The bicycle has a crank shaft on the frame with a pair of pedals which are rotatable by a rider's feet, and a chain drive between the crank shaft and the rear axle. The bicycle further has a one-way clutch between the sprocket and the rear axle or on the crank shaft whereby the crank shaft is drivingly engaged with the rear axle for rotation in only the forward direction. The one-way clutch allows the rider to coast during which the wheels of a bicycle rotate, but the crank shaft and pedals remain stationary. The one-way clutch also permits the pedals of such a bicycles to freely rotate in the reverse direction.
- In accordance with the invention, a second drive is provided between the crank shaft and the rear axle and a clutch operated by a lever mounted on the handlebars for selectively engaging or disengaging the second drive. The second drive includes a reversing means for reversing the direction of the rotation of the crank with respect to the axle. Accordingly, when the clutch is engaged, the crank shaft is drivingly engaged with the rear axle, but rotate the peddles of the crank shaft in the direction opposite to the direction required to apply a driving force to the rear wheel. With the pedals operating in reverse rotation, the rider can apply force to the pedals to slow and stop the bicycle.
- To provide for the reversing of direction of the crank shaft and peddles, a first gear is mounted on the crank shaft on the opposite side of the bicycle frame from the chain drive. A second gear is mounted co-axially with a braking sprocket on an independent axle and a second chain drivingly connects the braking sprocket with a sprocket on the rear axle. The clutch engages and disengages the second gear with the first gear thereby engaging and disengaging the second chain drive. To slow the bicycle, the rider will actuate the lever to the clutch to engage the second drive. The engagement of the first and second gears reverses the rotation of the first gear with respect to the second, causing the pedals of the crank to be rotated in the reverse direction. When the clutch is engaged, the rider can us his feet and legs to apply force to the rear wheel of a bicycle that uses presently available multi speed drives.
- A better and more complete understanding of the invention will be had after a reading of the following detailed description taken in conjunction with the drawings where:
- FIG. 1 is a right side elevational view of a bicycle having a presently available multi speed chain drive;
- FIG. 2 is a top view of the bicycle shown in FIG. 1 showing the device of the present invention mounted on the side of the bicycle opposite the chain drive;
- FIG. 3 is a left side view of the second chain drive of the present invention;
- FIG. 4 is a fragmentary enlarged cross sectional view of the slide and idler shaft of the present invention; and
- FIG. 5 is a schematic cross sectional view of the rear axle of a bicycle employing a second embodiment of the invention.
- Referring to FIG. 1, a
typical bicycle 10 has aframe 12 on which is mounted aforward axle 14 with aforward wheel 15 thereon and arear axle 16 with therear wheel 17 thereon. Between the front andrear axles crank shaft 18 rotatably mounted in acrank case 20, thecrank shaft 18 having oppositely directed crank arms withpedals crank shaft 18 is aseat 26 and forward of the seat arehandlebars 28. Thehandlebars 28 are connected to thefront axle 14 by afork 30 at the upper end of which is a stem, not shown, passing through asleeve 32 with thehandlebars 28 connected to the upper end of the stem such that turning thehandlebars 28 will turn thefront axle 14. A pair of lever arms, only one of which, 34, is visible, on thehandlebars 28 actuate caliper-type friction brakes, not shown. - A
first sprocket 36 is attached to thecrank shaft 18 and asecond sprocket 38 is attached to therear axle 16. Connecting the first and second sprockets is achain drive 42 such that pedaling thecrank 18 will apply a driving rotatable force to therear axle 16. Athird lever 44 mounted on the handle bars shifts the cranking ratio of thecrank shaft 18 to therear axle 16 to thereby allow a rider to select the optimum ratio between the movement of his legs and the turning of thedrive wheel 17. The drive assembly includes a one-way clutch, not shown, such that driving force can be applied from thecrank shaft 18 through thechain drive 42 to therear axle 16 for forward rotation only. Thepedals - Referring to FIGS. 2, 3, and4, in accordance with the present invention, the
bicycle 10 is fitted with asecond chain drive 50 on the opposite side of theframe 12 from thechain drive 42. Thesecond drive 50 is oriented generally parallel toframe member 54 which extends from thecrank case 20 to abearing 55 in which therear axle 16 is journaled for rotation. Theframe member 54 has a rectangular cross section and around theframe member 54 are fittedopposing slide sections slide assembly 58 which longitudinally moveable along theframe member 54. - Extending horizontally outwardly of the
slide assembly 58 is anidler shaft 60 on which is fitted athird sprocket 62. Afourth sprocket 64 is fitted around an extension of therear axle 16 which projects outward of thebearing 55 on the side opposite thesecond sprocket 38 and achain 72 extends around the teeth of the third andfourth sprockets 62, 68, thereby drivingly connecting the rotation of therear axle 16 to the rotation of theidler shaft 60. - A
first gear 84 is mounted for rotation with thecrank shaft 18 on the side opposite thefirst sprocket 36 and asecond gear 86 having teeth suitable for engagement with those of thefirst gear 84 is mounted onidler shaft 60 for rotation with thefirst sprocket 62. - Pivotally mounted to the
frame 12 is anidler member 74 having twoidler sprockets sprocket 76 engaging the lower span ofchain 72 andsprocket 77 engaging the upper span ofchain 72. Theidler member 74 is urged by a spring, not shown, away from theframe 12 to thereby take up excess slack in thechain 72. Aspring 78 between ablock 88 on theframe 12 and theslide assembly 58 urges theslide assembly 58 towards therear axle 16 and thereby urging thesecond gear 86 out of engagement with thefirst gear 84. - One end of the sheath of a push-
pull cable 90 is mounted to theframe member 54 and the other end of the sheath is attached to alever 94 mounted on thehandlebars 28. Thelever arm 94 pulls a cable through the sheath, with the distal end of the cable attached to theslide assembly 58. Actuation of thelever 94 therefore draws the slide assembly 52 away from therear axle 16 and brings thesecond gear 86 into engage thefirst gear 84 and compressingspring 78. - As can be seen, the third and
fourth sprockets chain 72 will cause theidler shaft 60 to rotate in the same direction as that of therear axle 16. Theidler member 74, andidler sprockets chain 72 as thespring 78 urges thesecond gear 86 out of engagement with the teeth of thefirst gear 84. Accordingly, therear axle 16 and thecrank shaft 18 will not be engaged with each other through thechain 72 while a rider is applying driving force through thechain drive 42 to propel thebicycle 10. When the rider wishes to slow the bicycle, however, the rider will actuate thelever 94 to draw the push pullcable 90 through the sheath and thereby pull thesecond gear 86 into engagement with thefirst gear 84. Once thegears second chain drive 50 will connect thecrank shaft 18 with therear axle 16. When thesecond chain drive 50 is engaged the tension will be on the lower span of the chain, urging thesprocket 77 upward so as to take the slack out of the upper span of thechain 72. - Where the
bicycle 10 shown in FIG. 3 is moving forward, the wheels will rotate counter clockwise. When thesecond chain drive 50 is engaged, thecrank shaft 18 andpedals gears rear wheel 17. The rider can then apply force to thepedals bicycle 10 as needed. - As can be seen, the
lever 94 andslide assembly 58 form a clutch whereby thesecond gear 86 is brought into engagement with thefirst gear 84 upon actuation of thelever 94. It should be appreciated that there are many structures for a clutch which engages or disengages thesecond drive 50. The clutch may be positioned on one of the shafts such as thecrank shaft 18 or theidler shaft 60. For example, a clutch may engage or disengage thefirst gear 84 with thecrank shaft 18. Alternately, the clutch may engage or disengage thesecond gear 86 to theidler shaft 60 or engage or disengage thefirst sprocket 62 to theidler shaft 60. - At higher speeds actuating the
lever 94 may cause thepeddles bicycle 10 to be rotated too rapidly in the reverse direction for the rider to use his legs to apply resistance to the rotation of the wheels. The efficiency of the braking system can be improved by providing a second gearing system for changing the ration of the gearing for thesecond chain drive 50, the selection of the gearing for thesecond drive system 50 being controlled through a second push pullcable 96 connected to afourth lever 98 mounted on theframe 12. - Referring to FIG. 5, in a second embodiment the chain drive is eliminated. In this embodiment the
rear axle 100 of the bicycle includes aninner shaft 102 having asprocket end 104 and aclutch end 106. A plurality of sprockets, 107, 108 are fixedly attached by a key, not shown, or the like, to thesprocket end 104 for transferring driving power through the chain drive from the pedals, not shown, to theinner shaft 102. A tubularouter shaft 110 surrounds the central portion of the inner shaft and a plurality of bearing 112, 113, 114, 116 retain the twoshafts way clutches inner shaft 102 to theouter shaft 110 in one direction only such that the rider can pump the pedals, not shown, to apply power to theouter shaft 110, or coast with the pedals stationary. Thespokes 120 convey the rotational force from theouter shaft 110 to the wheel and tire, not shown. - The
axle 100 is retained to theframe members axle retainers bearings shafts inner shaft 102 extends throughretainer 126 while both inner andouter shafts retainer 128. - At the
clutch end 106 of theaxle 102 is a clutch 134 having a firstclutch plate 136 fixed for rotation with theouter shaft 110 and a secondclutch plate 138 fixed for rotation with theinner shaft 102, and the secondclutch plate 138 axially moveable with respect to the twoshafts inner shaft 102 and within theouter shaft 110 urges the secondclutch plate 138 axially away from the firstclutch plate 136. - The clutch134 further includes a
housing 142 which is retained against rotation by anarm 144 attached to framemember 124. A bearing 146 within thehousing 142 permits theinner shaft 102 to rotate therein. Within thehousing 142 and surrounding thedistal end 106 ofshaft 102 is an engagement device of the type known in the art, such as an engaged spiral ramped surface, not shown, between adjacent first andsecond actuation plates plate 148 rotatable through an arc with respect to thesecond plate 150. Apush pull cable 152 actuated by alever 154 rotates thefirst plate 148 to move with respect tosecond plate 150, thereby urging the secondclutch plate 138 into engagement with the firstclutch plate 136. - By actuating the
lever 154 on the frame of the bicycle the rider can engage the clutch 134 and thereby lock theinner shaft 102 to theouter shaft 120, causing the two shafts to rotate together. In this case the clutch 134 cause the pedals of the bicycle to rotate in the same rotational direction required to drive the bicycle. The rider can then apply force through his legs to resist the rotation of the peddles to slow and stop the bicycle. - It should also be appreciated that a bicyclist making use of the invention will employ muscles in stopping the bicycle that are not normally used in riding a conventional bicycle, thereby providing certain fitness benefits to the user.
- While the present invention has been disclosed with respect to a single embodiment, it will be appreciated that many modifications and variations may be made without departing from the true spirit and scope of the invention. It is, therefore, the intent of appendant claims to cover all such modifications and variations which fall within the true spirit and scope of the invention.
Claims (8)
1. In a bicycle having a frame, an axle mounted on said frame, a rear wheel mounted on said axle, a crank shaft on said frame, said crank shaft having a pair of pedals whereby said crank shaft can be rotated by the movement of the rider's legs and feet, a chain drive between said crank shaft and said axle, and a one-way clutch whereby said crank shaft is drivingly engaged to said axle for rotation in only one direction, the improvement comprising
a second drive between said axle and said crank shaft,
said second drive having reversing means for reversing the direction of rotation of said crank shaft with respect to the direction of rotation of said axle, and
a clutch for selectively engaging and disengaging said second drive.
2. The improvement of claim 1 wherein said reversing means further comprises a pair of gears in engagement with each other.
3. The improvement of claim 1 wherein said second drive further comprising an idler shaft, a second chain and first and second sprockets on said idler shaft and on said rear axle respectively.
4. The improvement of claim 3 wherein said second chain drive is positioned on the opposite side of the said frame from said chain drive.
5. The improvement of claim 4 wherein said reversing means is a pair of gears in engagement with each other.
6. The improvement of claim 5 wherein said clutch engages and disengages said pair of gears.
7. A bicycle comprising
a frame,
a crank shaft on said frame,
a pair of pedals mounted on ends of said crank shaft,
a first chain drive for drivingly engaging said crank shaft with said axle,
one way clutch means on said first chain drive for applying rotational force to said axle in one direction only,
a second chain drive between said crank shaft and said axle,
said second chain drive including reversing means for reversing the direction of rotation of said crank with respect to said axle, and
clutch means for selectively engaging and disengaging said second chain drive.
8. In a bicycle having a frame, a crank shaft on said frame, said crank shaft having a pair of pedals whereby said crank shaft can be rotated by the movement of the rider's legs and feet, a rear axle, a chain drive between said crank shaft and said rear axle, said rear axle having an inner axle with a first end drivingly connected to said chain driver and a second end, a tubular outer axle concentric with said first axle, and a one-way clutch between said inner axle and said outer axle whereby said chain drive is drivingly engaged to said outer axle for rotation in only one direction, the improvement comprising
a clutch between said inner axle and said outer axle,
means for a urging said clutch out of engagement wherein said inner axle is engaged with said outer axle only through said one way clutch, and
means for urging said clutch into engagement wherein said chain drive is engaged with said outer axle for rotation in both directions.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/057,267 US20030137123A1 (en) | 2002-01-24 | 2002-01-24 | Frictionless bicycle stopping device |
US10/667,934 US6916031B1 (en) | 2002-01-24 | 2003-09-22 | Frictionless bicycle stopping device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/057,267 US20030137123A1 (en) | 2002-01-24 | 2002-01-24 | Frictionless bicycle stopping device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/667,934 Continuation-In-Part US6916031B1 (en) | 2002-01-24 | 2003-09-22 | Frictionless bicycle stopping device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030137123A1 true US20030137123A1 (en) | 2003-07-24 |
Family
ID=22009542
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/057,267 Abandoned US20030137123A1 (en) | 2002-01-24 | 2002-01-24 | Frictionless bicycle stopping device |
US10/667,934 Expired - Fee Related US6916031B1 (en) | 2002-01-24 | 2003-09-22 | Frictionless bicycle stopping device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/667,934 Expired - Fee Related US6916031B1 (en) | 2002-01-24 | 2003-09-22 | Frictionless bicycle stopping device |
Country Status (1)
Country | Link |
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US (2) | US20030137123A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2897338A1 (en) * | 2006-02-10 | 2007-08-17 | Alain Michel Jean Rebillard | Propulsion permitting device for e.g. mountain bike, has wheel pinions respectively mounted on free wheel in two directions, and clutching/declutching system installed between hub and free wheel such that pedal is raised |
CN100381331C (en) * | 2004-02-10 | 2008-04-16 | 本田技研工业株式会社 | Chain alignment structure of bicycle transmission |
CN102152838A (en) * | 2011-03-17 | 2011-08-17 | 郑爱军 | Dual-wheel crankshaft parallel swing bicycle |
WO2013023311A1 (en) * | 2011-08-17 | 2013-02-21 | Synergy Biosurgical Ag | Device for the propulsion and eccentric braking of a vehicle |
WO2013023310A1 (en) * | 2011-08-17 | 2013-02-21 | Synergy Biosurgical Ag | Vehicle having a pedal drive and a reverse gear mechanism |
US9528562B1 (en) * | 2015-12-07 | 2016-12-27 | International Business Machines Corporation | Interlock braking system |
CN107100395A (en) * | 2017-05-31 | 2017-08-29 | 何永 | Aerial intelligence bicycle storehouse |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8517405B2 (en) * | 2007-09-10 | 2013-08-27 | Hui Yan | Human powered vehicle with two reciprocal pedals |
CN102653292A (en) * | 2012-05-03 | 2012-09-05 | 太仓市哲泰天产品设计有限公司 | Parent-child bicycle |
US10322767B2 (en) | 2016-01-24 | 2019-06-18 | Costel Dragomir | Carry-on foldable stepper scooter |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4093261A (en) * | 1977-05-09 | 1978-06-06 | Persson Ray S | Coaster brake for bicycle with derailleur speed change mechanism |
JPS5911990A (en) * | 1982-07-09 | 1984-01-21 | 土江 公裕 | Drive for bicycle |
US4583754A (en) * | 1984-10-02 | 1986-04-22 | Klaus Seeliger | Transmission unit |
US4925201A (en) * | 1987-12-31 | 1990-05-15 | Hamlin Transmission Company | Variable-ratio transmissions, separately and in bicycles |
US5337861A (en) * | 1993-02-16 | 1994-08-16 | Anthony Romano | Back pedal brake for derailleur bicycle |
US5435583A (en) * | 1993-08-09 | 1995-07-25 | Foster, Jr.; James P. | Clutch operated, bi-directional, bicycle gear box |
US5765847A (en) * | 1994-02-04 | 1998-06-16 | Novator, L.L.C. | Pedal mechanism for cycle and exercise equipment |
US5918894A (en) * | 1994-02-04 | 1999-07-06 | Novator L.L.C. | Pedal mechanism for cycle and exercise equipment |
KR0141512B1 (en) * | 1994-06-14 | 1998-07-15 | 마재열 | Advanced operating travelling system of bicycle |
US5884927A (en) * | 1996-10-16 | 1999-03-23 | Mahaney; Joseph B. | 2-way bicycle drive unit |
KR100258784B1 (en) * | 1998-01-20 | 2000-06-15 | 마재열 | Power changing apparatus of bicycle hub |
-
2002
- 2002-01-24 US US10/057,267 patent/US20030137123A1/en not_active Abandoned
-
2003
- 2003-09-22 US US10/667,934 patent/US6916031B1/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100381331C (en) * | 2004-02-10 | 2008-04-16 | 本田技研工业株式会社 | Chain alignment structure of bicycle transmission |
FR2897338A1 (en) * | 2006-02-10 | 2007-08-17 | Alain Michel Jean Rebillard | Propulsion permitting device for e.g. mountain bike, has wheel pinions respectively mounted on free wheel in two directions, and clutching/declutching system installed between hub and free wheel such that pedal is raised |
CN102152838A (en) * | 2011-03-17 | 2011-08-17 | 郑爱军 | Dual-wheel crankshaft parallel swing bicycle |
WO2013023311A1 (en) * | 2011-08-17 | 2013-02-21 | Synergy Biosurgical Ag | Device for the propulsion and eccentric braking of a vehicle |
WO2013023310A1 (en) * | 2011-08-17 | 2013-02-21 | Synergy Biosurgical Ag | Vehicle having a pedal drive and a reverse gear mechanism |
US9528562B1 (en) * | 2015-12-07 | 2016-12-27 | International Business Machines Corporation | Interlock braking system |
US9879737B2 (en) | 2015-12-07 | 2018-01-30 | International Business Machines Corporation | Interlock braking system |
CN107100395A (en) * | 2017-05-31 | 2017-08-29 | 何永 | Aerial intelligence bicycle storehouse |
Also Published As
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |