Patents by Inventor Joao Filipe TAVARES MIRANDA
Joao Filipe TAVARES MIRANDA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11739823Abstract: A sprocket for engagement with a drive chain has a plurality of teeth extending radially from a periphery of the sprocket, including a first and a second group of teeth; the teeth of the first group and the second group are alternately arranged so that each tooth of the first group is followed by a tooth of the second group, and vice versa; each tooth of the first group having a first maximum width, each tooth of the second group having a second maximum width which is larger than the first maximum width; each tooth of the second group has a protrusion on at least one lateral face of the tooth; the outer lateral face of the protrusion extends over a first portion of the lateral face of each tooth of the second group, the length being 50% of the length of the respective tooth or less.Type: GrantFiled: April 29, 2022Date of Patent: August 29, 2023Assignee: MIRANDA & IRMAO, LDAInventor: Joao Filipe Tavares Miranda
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Publication number: 20230127274Abstract: A pedal crank drive having a pedal crank (12) and a chain ring (14), which can be connected to each other in a rotationally fixed manner to form a unit (10), the unit (10) having a spindle hole (16) for a bottom bracket spindle. The chain ring (14) has a first connecting contour (18) and the pedal crank (12) has a second connecting contour (20), wherein the connecting contours (18, 20) can be fitted into one another in an assembly position, and the pedal crank (12) and the chain ring (14) can be rotated relative to one another around the spindle hole (16) to a stop position in which the stop surfaces (22, 24) of the pedal crank (12) and the chain ring (14) abut against each other.Type: ApplicationFiled: January 29, 2021Publication date: April 27, 2023Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20220260148Abstract: A sprocket for engagement with a drive chain has a plurality of teeth extending radially from a periphery of the sprocket, including a first and a second group of teeth; the teeth of the first group and the second group are alternately arranged so that each tooth of the first group is followed by a tooth of the second group, and vice versa; each tooth of the first group having a first maximum width, each tooth of the second group having a second maximum width which is larger than the first maximum width; each tooth of the second group has a protrusion on at least one lateral face of the tooth; the outer lateral face of the protrusion extends over a first portion of the lateral face of each tooth of the second group, the length being 50% of the length of the respective tooth or less.Type: ApplicationFiled: April 29, 2022Publication date: August 18, 2022Inventor: Joao Filipe TAVARES MIRANDA
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Patent number: 11396937Abstract: A sprocket for engagement with a drive chain has a first and a second group of teeth, wherein the teeth of the first group and the second group are alternately arranged and each tooth of the second group is wider than each tooth of the first group. The profile of each tooth of the second group has a first protrusion in the front half of the tooth on a first lateral surface and a second protrusion in the rear half of the tooth on a second, opposite lateral surface of the tooth. In particular, the portion of each tooth of the second group engaging the chain may have a center plane that is rotated or twisted during forming about the radial center line of the tooth with respect to the central plane of the sprocket.Type: GrantFiled: March 8, 2018Date of Patent: July 26, 2022Assignee: MIRANDA & IRMAO, LDAInventor: Joao Filipe Tavares Miranda
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Publication number: 20220161893Abstract: A drive chain system having a chain with an alternating succession of inner chain links and outer chain links, each inner chain link having a pair of inner link plates and each outer chain link having a pair of two outer link plates contacting the inner link plates of adjacent inner chain links. A pin connects two outer link plates and two inner link plates, wherein the inner surfaces of a pair of opposite outer link plates has protrusions in the area between the adjacent inner link plates. The system has a rear cassette with a multitude of sprockets with a plurality of sprocket teeth, wherein the cassette has sprocket teeth of different tooth types, the teeth of at least one tooth type having a tip laterally offset from the centerplane.Type: ApplicationFiled: December 19, 2019Publication date: May 26, 2022Inventor: Joao Filipe TAVARES MIRANDA
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Patent number: 11339865Abstract: A sprocket for engagement with a drive chain has a plurality of teeth extending radially from a periphery of the sprocket, including a first and a second group of teeth; the teeth of the first group and the second group are alternately arranged so that each tooth of the first group is followed by a tooth of the second group, and vice versa; each tooth of the first group having a first maximum width, each tooth of the second group having a second maximum width which is larger than the first maximum width; each tooth of the second group has a protrusion on at least one lateral face of the tooth; the outer lateral face of the protrusion extends over a first portion of the lateral face of each tooth of the second group, the length being 50% of the length of the respective tooth or less.Type: GrantFiled: May 12, 2017Date of Patent: May 24, 2022Assignee: MIRANDA & IRMAO, LDAInventor: Joao Filipe Tavares Miranda
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Publication number: 20220001950Abstract: A crank set for a two-wheeler, the crank set comprising a crank with a crank spider, a chainring and a chain guard ring, the chainring being fastened to the crank spider by fastening elements, and the fastening elements pressing the chainring and the crank spider against one another along a pressing direction. A clamped area of the chain guard ring is clamped in a clamping zone between at least one of the fasteners by which the chainring is secured to the crank spider and the crank spider or chainring and thereby secured to the crank set.Type: ApplicationFiled: October 21, 2019Publication date: January 6, 2022Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20210381581Abstract: A chain comprising an alternating succession of inner chain links and outer chain links, each inner chain link having a pair of inner link plates contacting the lateral faces of two rollers and each outer chain link having a pair of two outer link plates contacting the inner link plates of adjacent inner chain links. A pin connects two outer link plates and two inner link plates and a roller, wherein the inner surfaces of a pair of opposite outer link plates comprise protrusions in the area between the adjacent inner link plates. The circumference and/or diameter of the protrusion is at least 60% and/or maximum 140% the circumference and/or diameter of the eyes of the outer link plate.Type: ApplicationFiled: October 8, 2019Publication date: December 9, 2021Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20210356017Abstract: A drive chain system comprising a chain with an alternating succession of inner chain links and outer chain links, each inner chain link having a pair of inner link plates contacting the lateral faces of two rollers and each outer chain link having a pair of two outer link plates contacting the inner link plates of adjacent inner chain links. A pin connects two outer link plates and two inner link plates and a roller, wherein the inner surfaces of a pair of opposite outer link plates comprise protrusions in the area between the adjacent inner link plates. The system comprises a chainring with a plurality of teeth, which teeth taper laterally towards their respective tip.Type: ApplicationFiled: October 8, 2019Publication date: November 18, 2021Inventor: Joao Filipe TAVARES MIRANDA
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Patent number: 10800481Abstract: The present patent application describes a modular crankset for bicycles. The described modular crankset is useful for users, since it solves issues related to the speed of replacement of elements, the easiness of the replacement procedures and lowers the weight of the set without compromising the consistency and rigidity of the set. The current technology is applicable to any bicycle available in the market, including electrical bicycles, and it is especially interesting for competition bicycles, wherein the replacement of the constituent elements of the crankset should be made as quickly as possible.Type: GrantFiled: February 3, 2017Date of Patent: October 13, 2020Assignee: MIRANDA & IRMAO, LDaInventor: Joao Filipe Tavares Miranda
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Patent number: 10780944Abstract: The present application describes a transmission system, including a certain tooth profile of toothed wheel and its use. This transmission system enables an improved guidance of the chain by using a non-normative tooth profile, to avoid that when the vehicle is exposed to extreme situations disengagements of the chain may occur. This transmission system applies to vehicles, preferably bicycles.Type: GrantFiled: August 25, 2015Date of Patent: September 22, 2020Assignee: MIRANDA & IRMAO, LDA.Inventor: Joao Filipe Tavares Miranda
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Publication number: 20200239104Abstract: The present application describes a transmission system, including a certain tooth profile of toothed wheel and its use. This transmission system enables an improved guidance of the chain by using a non-normative tooth profile, to avoid that when the vehicle is exposed to extreme situations disengagements of the chain may occur. This transmission system applies to vehicles, preferably bicycles.Type: ApplicationFiled: August 25, 2015Publication date: July 30, 2020Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20200156736Abstract: A sprocket for engagement with a drive chain has a plurality of teeth extending radially from a periphery of the sprocket, including a first and a second group of teeth; the teeth of the first group and the second group are alternately arranged so that each tooth of the first group is followed by a tooth of the second group, and vice versa; each tooth of the first group having a first maximum width, each tooth of the second group having a second maximum width which is larger than the first maximum width; each tooth of the second group has a protrusion on at least one lateral face of the tooth; the outer lateral face of the protrusion extends over a first portion of the lateral face of each tooth of the second group, the length being 50% of the length of the respective tooth or less.Type: ApplicationFiled: May 12, 2017Publication date: May 21, 2020Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20200063850Abstract: A sprocket for engagement with a drive chain has a first and a second group of teeth, wherein the teeth of the first group and the second group are alternately arranged and each tooth of the second group is wider than each tooth of the first group. The profile of each tooth of the second group has a first protrusion in the front half of the tooth on a first lateral surface and a second protrusion in the rear half of the tooth on a second, opposite lateral surface of the tooth. In particular, the portion of each tooth of the second group engaging the chain may have a center plane that is rotated or twisted during forming about the radial center line of the tooth with respect to the central plane of the sprocket.Type: ApplicationFiled: March 8, 2018Publication date: February 27, 2020Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20190241233Abstract: The present patent application describes a modular crankset for bicycles. The described modular crankset is useful for users, since it solves issues related to the speed of replacement of elements, the easiness of the replacement procedures and lowers the weight of the set without compromising the consistency and rigidity of the set. The current technology is applicable to any bicycle available in the market, including electrical bicycles, and it is especially interesting for competition bicycles, wherein the replacement of the constituent elements of the crankset should be made as quickly as possible.Type: ApplicationFiled: February 3, 2017Publication date: August 8, 2019Inventor: Joao Filipe TAVARES MIRANDA
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Publication number: 20170191558Abstract: The present application describes a drivetrain system which includes a sprocket tooth profile and use thereof. This drivetrain system enables improved guidance of the chain (2) through the use of a non-standard tooth profile (1) so that when a rear gearbox is used it is possible to have a single speed in the chainset. This drivetrain system is utilised in vehicles, preferably bicycles.Type: ApplicationFiled: October 9, 2014Publication date: July 6, 2017Inventor: Joao Filipe TAVARES MIRANDA
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Patent number: 9688334Abstract: The present application describes a chain guard system lock nut comprising an electric motor (7) wherein the sprocket rotates at an angular speed different from the crank speed (2). The present application discloses a bike chain guard system lock nut designed to protect the clothing of the user from fouling or being caught between the chain and the sprocket, thereby avoiding accidents, but also, and by means of the chain guard (4), avoiding the chain from releasing from the sprocket in the bottom bracket (8). This lock nut is assembled together with the sprocket directly on the bottom bracket.Type: GrantFiled: March 13, 2015Date of Patent: June 27, 2017Assignee: MIRANDA & IRMAO, LDA.Inventor: João Filipe Tavares Miranda
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Publication number: 20160114848Abstract: The present application describes a chain guard system lock nut comprising an electric motor (7) wherein the sprocket rotates at an angular speed different from the crank speed (2). The present application discloses a bike chain guard system lock nut designed to protect the clothing of the user from fouling or being caught between the chain and the sprocket, thereby avoiding accidents, but also, and by means of the chain guard (4), avoiding the chain from releasing from the sprocket in the bottom bracket (8). This lock nut is assembled together with the sprocket directly on the bottom bracket.Type: ApplicationFiled: March 13, 2015Publication date: April 28, 2016Inventor: João Filipe TAVARES MIRANDA
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Patent number: D894793Type: GrantFiled: May 22, 2018Date of Patent: September 1, 2020Assignee: MIRANDA & IRMAO, LDA.Inventor: Joao Filipe Tavares Miranda
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Patent number: D949750Type: GrantFiled: March 30, 2020Date of Patent: April 26, 2022Assignee: MIRANDA & IRMAO, LDA.Inventor: Joao Filipe Tavares Miranda