US20160076621A1 - Synchronized dual drive gear assemblies and methods - Google Patents
Synchronized dual drive gear assemblies and methods Download PDFInfo
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- US20160076621A1 US20160076621A1 US14/641,509 US201514641509A US2016076621A1 US 20160076621 A1 US20160076621 A1 US 20160076621A1 US 201514641509 A US201514641509 A US 201514641509A US 2016076621 A1 US2016076621 A1 US 2016076621A1
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- gear
- bodies
- actuation
- pinion
- rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/206—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members characterised by the driving or driven member being composed of two or more gear wheels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19019—Plural power paths from prime mover
Definitions
- the gear 102 may be coupled with one or more other components, such as a shaft, rod, or other device, such that rotation of the pinion bodies 118 , 120 by the device 132 causes the gear 102 to rotate the one or more other components.
- a shaft 200 (represented by phantom lines in FIG. 2 ) may be disposed through the opening in the gear 102 such that the shaft is oriented (e.g., elongated) along the axis of rotation 108 ).
- the shaft 200 may be an actuation device or coupled with an actuation device that causes the opening or closing of a valve or other component to move when the shaft 200 is rotated.
- connecting plural pinion bodies 518 , 520 with the gear 502 can increase a torque capacity of the gear 502 .
- using plural torque generating devices 532 , 534 to drive (e.g., rotate) the pinion bodies 518 , 520 can increase the total amount of torque that can be transferred from the devices 532 , 534 to the gear 502 .
- the devices 532 , 534 may collectively double the torque that can be provided to the pinion bodies 520 compared to only one of the devices 532 , 534 .
- one of the devices 532 or 534 may be a primary torque generating device and the other device 534 or 532 may be a secondary torque generating device.
Abstract
A gear assembly includes an actuation gear and plural separate pinion bodies. The actuation gear has first gear teeth on one or more surfaces of the gear and is configured to rotate around an actuation axis of rotation. The pinion bodies have second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear. Each of the plural separate pinion bodies are configured to be rotated about respective pinion axes of rotation to cause rotation of the actuation gear around the actuation axis of rotation.
Description
- This application claims priority to, and is a continuation of, U.S. application Ser. No. 14/486,677, which was filed on 15 Sep. 2014.
- Gears are used to, among other things, transmit power from one device to another and/or change a direction of an applied force. Many types of gears are known, such as straight gears, angle gears, bevel gears, worm gears, combinations of these gears, and others. Also known are SPIROID brand gears that use a curved gear tooth. Such a configuration of gears permits larger loads to be transferred due to the increased surface area of gear tooth relative to a straight gear formed on a similar blank.
- Certain applications may require gears that withstand high loads (e.g., forces). Generally, the ability to withstand such forces is accomplished by using larger gears to increase the area on the gear teeth over which the forces are exerted. The ability to withstand forces is balanced against size requirements, or conversely size limitations, of the gear assembly. While the SPIROID gear accomplishes this, at times, even smaller size limitations may apply. Accordingly, there is a need for a gear system that can withstand high loads/forces in a limited or small size application that can overcome the inherent assembly limitations described. Concurrently there is also a need for a gear system that can also operate synchronously to mitigate the mechanical limitations of torque transfer described.
- Specifically, there is a need for an electromechanical actuation system that can withstand high loads/forces in a limited size application to operate (for example) industrial or military grade pipeline and pipe system control valves. One such application includes, but is not limited to, submersible vehicle pipe control valve systems. Other useful applications may include oil and gas pipeline valve controls; industrial systems valves in various types of electrical power generation, steam turbine systems, and refinery or processing systems.
- Some known gear assemblies include enveloping gear arrangements that include an enveloping gear arrangement having two or more surfaces with curved gear teeth that mesh with teeth of a single pinion. The single pinion engages the enveloping gear in multiple locations for the purpose of increasing power and torque output without substantially increased space claim or size. Such gear assemblies, however, have been found to have deficiencies. For example, in order for the elongated pinion to simultaneously engage the multiple surfaces of the enveloping gear, the pinion and enveloping gear may need to be arranged such that the pinion and gear rotate around non-orthogonal axes and non-parallel axes with respect to each other. For example, the axis around which the pinion rotates may not be parallel to or perpendicular to the axis around which the enveloping gear rotates. This arrangement can be referred to as a skew-axis arrangement.
- A skew-axis gear arrangement can often preclude ready incorporation of the gear assembly into an actuator design due to added complexities of bearing arrangements and support, atypical housing and mounting features that increase machining, fabrication, and assembly complexities; and general reluctance by potential end-users to adopt the technology due to added complexities with incorporating atypical mounting and motor connection features into their systems. For these reasons, a need exists for gear assemblies which may help to obviate the problems listed above.
- In an embodiment, a gear assembly includes an actuation gear and plural separate pinion bodies. The actuation gear has first gear teeth on one or more surfaces of the gear and is configured to rotate around an actuation axis of rotation. The pinion bodies have second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear. Each of the plural separate pinion bodies are configured to be rotated about respective pinion axes of rotation to cause rotation of the actuation gear around the actuation axis of rotation.
- In an embodiment, a gear assembly includes an actuation gear and plural separate pinion bodies. The actuation gear has first gear teeth on one or more surfaces of the gear. The pinion bodies have second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear. The plural separate pinion bodies are configured to be rotated about respective parallel pinion axes of rotation to cause rotation of the actuation gear around an actuation axis of rotation of the actuation gear. The pinion axes of rotation are oriented perpendicular to the actuation axis of rotation.
- The benefits and advantages of the presently described inventive subject matter will become more readily apparent to those of ordinary skill in the relevant art after reviewing the following detailed description and accompanying drawings, wherein:
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FIG. 1 is a perspective view of an embodiment of a gear assembly; -
FIG. 2 is a top view of the gear assembly shown inFIG. 1 ; -
FIG. 3 is a side view of the gear assembly shown inFIG. 1 ; -
FIG. 4 is a front view of the gear assembly shown inFIG. 1 ; -
FIG. 5 is a perspective view of an embodiment of another gear assembly; -
FIG. 6 is a top view of the gear assembly shown inFIG. 5 ; -
FIG. 7 is a side view of the gear assembly shown inFIG. 5 ; -
FIG. 8 is a front view of the gear assembly shown inFIG. 5 ; -
FIG. 9 is a perspective view of an embodiment of another gear assembly; -
FIG. 10 is a top view of the gear assembly shown inFIG. 9 ; -
FIG. 11 is a side view of the gear assembly shown inFIG. 9 ; -
FIG. 12 is a front view of the gear assembly shown inFIG. 9 ; -
FIG. 13 is a perspective view of an embodiment of another gear assembly; -
FIG. 14 is a top view of the gear assembly shown inFIG. 13 ; -
FIG. 15 is a side view of the gear assembly shown inFIG. 13 ; and -
FIG. 16 is a front view of the gear assembly shown inFIG. 13 . - While the presently described inventive subject matter is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described example embodiments of the inventive subject matter with the understanding that the present disclosure is to be considered an exemplification of the inventive subject matter and is not intended to limit the scope of the inventive subject matter to the specific illustrated embodiments. It should be understood that the title of this section of this specification, namely, “Detailed Description,” relates to a requirement of the United States Patent Office, and does not imply, nor should be inferred to limit the subject matter disclosed herein.
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FIG. 1 is a perspective view of an embodiment of agear assembly 100.FIG. 2 is a top view of thegear assembly 100 shown inFIG. 1 .FIG. 3 is a side view of thegear assembly 100 shown inFIG. 1 .FIG. 4 is a front view of thegear assembly 100 shown inFIG. 1 . Thegear assembly 100 includes anactuation gear 102 formed from plural (e.g., two) separate and separable singlepiece gear bodies gear 102 may be formed as a single, continuous, and/or homogenous body and not pluralseparate gear bodies gear bodies gear 102 each include a common actuation axis ofrotation 108 such that thegear 102 rotates about the axis ofrotation 108 along the illustrated direction 110 (or an opposite direction). Each of thegear bodies second surfaces first surface 112 havinggear teeth 116 formed therein. Although only thesurfaces gear body 104 are labeled inFIG. 1 , thegear body 106 may include similar oridentical surfaces gear teeth 116 may be SPIROID curved gear teeth or other gear teeth. Thefirst surfaces 112 may be referred to as teeth surfaces as thesesurfaces 112, include thegear teeth 116. - As shown in
FIG. 1 , thefirst surfaces 112 of thegear bodies second surfaces 114 of thegear bodies gear bodies gear 102. Consequently, thegear teeth 116 are disposed on opposite sides of thegear 102 and face away from each other. For example, thegear teeth 116 may radially extend outward from the axis ofrotation 108 and away from thesecond surface 114 for each of thegear bodies gear bodies second surfaces 114 are facing and contacting each other while thefirst surfaces 112 that include thegear teeth 116 are in opposition to each other, such that thegear teeth 116 face outward. - The
gear assembly 100 may also include plural separate andseparable pinion bodies pinion bodies rotation rotation pinion bodies rotation 108 of thegear 102. The axes ofrotation rotation pinion bodies first surfaces 112 of thegear 102. Thepinion bodies gear 102. Thepinion bodies FIG. 1 are elongated in directions along the axes ofrotation rotation 108 of thegear 102. Thepinion bodies rotation - The
pinion bodies pinion bodies gear teeth 126 shaped to engage (e.g., mesh with) thegear teeth 116 of thegear 102. For example, thegear teeth 126 may be SPIROID gear teeth formed co-axially on or in thepinion bodies gear teeth 126 may be another type of gear teeth. Thepinion bodies gear teeth 126 for thepinion body 118 engage (e.g., mesh with) thegear teeth 116 on theopposite surfaces 112 of thegear 102 at the same time (e.g., concurrently or simultaneously). This engagement between theteeth 126 of thepinion bodies teeth 116 of thegear 102 translates rotation of thepinion bodies gear 102 into translation of thepinion bodies 118, 120). For example, rotation of thepinion body 118 around theaxis 122 in thedirection 128 and/or rotation of thepinion body 120 around theaxis 124 in thedirection 130 may cause rotation of thegear 102 about theaxis 108 in thedirection 110. Conversely, thepinion bodies gear 102 may be rotated in opposite directions. - In operation, the
pinion bodies torque generating device 132. Thetorque generating device 132 can include or represent one or more different systems, machines, assemblies, persons, or the like, that rotate one or more of thepinion bodies rotation device 132 may include or represent one or more of a manual hand crank or hand wheel device, an electrically powered motor (e.g., alternating or direct current drive or servomotor), hydraulic motor, or the like. In the illustrated example, thedevice 132 is a motor, such as an electric motor, that concurrently or simultaneously rotates thepinion bodies device 132 may include or be coupled with aninput drive gear 134 having teeth that engage (e.g., mesh with) teeth of drive gears 136, 138 connected or included in thepinion bodies - The
input drive gear 134 synchronizes the movement (e.g., rotation) of thepinion bodies input drive gear 134 by thedevice 132. For example, thedevice 132 can generate torque to rotate theinput drive gear 134, which then transfers this torque to thepinion bodies gear 134 and the teeth of thepinion bodies pinion bodies single device 132 is the same or substantially the same. - The
gear 102 may be coupled with one or more other components, such as a shaft, rod, or other device, such that rotation of thepinion bodies device 132 causes thegear 102 to rotate the one or more other components. For example, a shaft 200 (represented by phantom lines inFIG. 2 ) may be disposed through the opening in thegear 102 such that the shaft is oriented (e.g., elongated) along the axis of rotation 108). Theshaft 200 may be an actuation device or coupled with an actuation device that causes the opening or closing of a valve or other component to move when theshaft 200 is rotated. As a result, rotation of thepinion bodies device 132 is translated by thegear assembly 100 into actuation of the device to which thegear assembly 100 is joined, such as by theshaft 200. In the illustrated example, thepinion bodies pinion bodies FIG. 2 . In contrast to a rack and pinion arrangement, where a gear engages a rack that linearly moves relative to the gear, thepinion bodies gear 102 may rotate, but not linearly move, in one embodiment. - Connecting
plural pinion bodies device 132 and with thegear 102 can increase a torque capacity of thegear 102. The torque capacity represents a limit on the amount of torque or other force that can be transferred from thedevice 132 to thegear 102 via thepinion bodies teeth 126 of thepinion bodies teeth 116 of thegear 102. The torque capacity of thegear 102 is increased by dividing the total torque provided by thedevice 132 between theplural pinion bodies device 132 may be transferred thepinion body 118 and approximately the other half of this total torque generated by thedevice 132 may be transferred to thepinion body 120. These two approximate halves of the total torque are then transferred from thepinion bodies gear 102 by the plural mesh zones or areas between thepinion bodies gear 102. The term “mesh zone” or “mesh area” refers to the locations or regions where thepinion bodies 118, 120 (e.g., the teeth 126) engage the gear 102 (e.g., the teeth 116). Thegear 102 receives all or a substantial portion of the total torque generated by thedevice 132 via these plural mesh zones or areas, without the entire or substantial portion of this torque being directly transferred to thegear 102 via a single mesh zone or area. Consequently, a larger amount of torque may be able to be transferred to thegear 102 from thedevice 132 without damaging the gear 102 (e.g., stripping the teeth 116). -
FIG. 5 is a perspective view of an embodiment of anothergear assembly 500.FIG. 6 is a top view of thegear assembly 500 shown inFIG. 5 .FIG. 7 is a side view of thegear assembly 500 shown inFIG. 5 .FIG. 8 is a front view of thegear assembly 500 shown inFIG. 5 . Thegear assembly 500 includes anactuation gear 502 formed from plural (e.g., two) separate and separable singlepiece gear bodies gear 502 may be formed as a single, continuous, and/or homogenous body and not pluralseparate gear bodies FIG. 5 , thegear bodies gear bodies - The
gear bodies gear 502 each include a common actuation axis ofrotation 508 such that thegear 502 rotates about the axis ofrotation 508 along the illustrated direction 510 (or an opposite direction). Similar to thegear bodies FIG. 1 , each of thegear bodies gear bodies gear bodies gear bodies gear bodies - The
gear assembly 500 may also include plural separate andseparable pinion bodies pinion bodies pinion bodies FIG. 1 , and may rotate about (e.g., around) separate pinion axes ofrotation axes FIG. 1 . Thepinion bodies gear teeth 526, which may be similar to thegear teeth 126 shown inFIG. 1 . The axes ofrotation pinion bodies rotation 508 of thegear 502. Optionally, the axes ofrotation rotation 508. - The
pinion bodies gear teeth 526 of thepinion body 518 engage (e.g., mesh with) the gear teeth on thegear body 504 and thegear teeth 526 of thepinion body 520 engage the gear teeth on thegear body 506. This engagement translates rotation of thepinion bodies gear 502, similar to as described above with respect to thegear assembly 100. - The
pinion bodies torque generating devices devices device 132 shown inFIG. 1 . Optionally, thedevices device devices pinion bodies gear 502 may be coupled with one or more other components, such as a shaft, rod, or other device, such that rotation of thepinion bodies devices gear 502 to rotate the one or more other components. For example, a shaft 800 (represented by phantom lines inFIG. 8 and which may be similar to theshaft 200 shown inFIG. 2 ) may be disposed through the opening in thegear 502 such that the shaft is oriented (e.g., elongated) along the axis of rotation 508). Theshaft 800 may be an actuation device or coupled with an actuation device that causes the opening or closing of a valve or other component to move when theshaft 800 is rotated. As a result, rotation of thepinion bodies devices gear assembly 500 into actuation of the device to which thegear assembly 500 is joined. - As described above, connecting
plural pinion bodies gear 502 can increase a torque capacity of thegear 502. Additionally or alternatively, using pluraltorque generating devices pinion bodies devices gear 502. For example, thedevices pinion bodies 520 compared to only one of thedevices devices other device corresponding pinion body gear 502 when the torque needed to rotate theshaft 800 is less than an upper limit or other threshold on the torque that can be provided by the primary torque generating device. The secondary torque generating device may not provide torque to theother pinion body shaft 800 orgear 502 exceeds this limit or threshold, the secondary torque generating device may provide additional torque to rotate thecorresponding pinion body devices -
FIG. 9 is a perspective view of an embodiment of another gear assembly 900.FIG. 10 is a top view of the gear assembly 900 shown inFIG. 9 .FIG. 11 is a side view of the gear assembly 900 shown inFIG. 9 .FIG. 12 is a front view of the gear assembly 900 shown inFIG. 9 . The gear assembly 900 includes anactuation gear 902 formed from a singlepiece gear body 904. For example, in contrast to thegear assemblies FIGS. 1 through 8 , thegear 902 may be formed from only onegear body 904, which may be similar to thegear body FIGS. 1 through 8 . Optionally, thegear 902 may be formed from thegear body - The
gear body 904 andgear 902 each include a common actuation axis ofrotation 908 such that thegear 902 rotates about the axis ofrotation 908 along the illustrated direction 910 (or an opposite direction). Similar to thegear bodies gear body 904 includes a first surface having gear teeth. - The gear assembly 900 may also include plural separate and
separable pinion bodies pinion bodies pinion bodies rotation rotation rotation pinion bodies gear assemblies 100, 500). The axes ofrotation pinion bodies rotation 908 of thegear 902. Optionally, the axes ofrotation rotation 908. - The
pinion bodies gear teeth 926 that may be similar to thegear teeth pinion bodies gear teeth 926 for thepinion bodies gear 902 on the same surface at the same time. This engagement between theteeth 926 of thepinion bodies gear 902 translates rotation of thepinion bodies gear 902. - In operation, the
pinion bodies torque generating device 932. Thetorque generating device 932 may be similar to one or more of thedevices FIGS. 1 through 8 . In the illustrated example, thepinion bodies torque generating device 932. Optionally,plural devices 932 may be used. Thedevice 932 includes or is coupled to a primaryinput drive gear 934. Thedevice 934 can rotate thegear 934 around an axis of rotation that is coextensive with, collinear with, or the same as the axis ofrotation 922 of thepinion body 918. Thepinion body 918 may be coupled with thegear 934 and/or include thegear 934, such that rotation of thegear 934 causes rotation of thepinion body 918 around the axis ofrotation 922. - One or more drive gears 936 are connected with the
input drive gear 934 such that rotation of thedrive gear 934 is translated into rotation of the drive gears 936. While two drive gears 936 are shown, alternatively, asingle drive gear 936 or more than two drive gears 936 may be used. Theother pinion body 920 includes or is coupled with anadditional drive gear 938. The teeth of the drive gears 934, 936, 938 mesh with each other such that rotation of thedrive gear 934 and thepinion body 918 by thedevice 932 is translated into rotation of theother pinion body 920. The drive gears 934, 936, and/or 938 synchronize the rotations of thepinion bodies pinion bodies - As shown in
FIG. 9 , theteeth 926 of thepinion bodies pinion bodies teeth 926 of thepinion body 918 are located at or closer to an end of thepinion body 918 that is closer to thetorque generating device 932 than the opposite end of thepinion body 918, and theteeth 926 of thepinion body 920 are located at or closer to an end of thepinion body 920 that is farther from thetorque generating device 932 than the opposite end of thepinion body 920. Also as shown inFIGS. 9 , 10, and 12, thepinion bodies rotation pinion bodies 928, 920 may be disposed in the same plane such that the axes ofrotation rotation gear 902. For example, the plane in which the axes ofrotation gear 902. - Similar to as described above with respect to the
gears FIGS. 1 through 8 , thegear 902 may be coupled with one or more other components, such as a shaft, rod, or other device (e.g., the shaft 1000 shown in phantom lines inFIG. 10 ), such that rotation of thepinion bodies device 932 causes thegear 902 to rotate the one or more other components. The shaft 1000 may be an actuation device or coupled with an actuation device that causes the opening or closing of a valve or other component to move when the shaft 1000 is rotated. As a result, rotation of thepinion bodies device 932 is translated by the gear assembly 900 into actuation of the device to which the gear assembly 900 is joined, such as by the shaft 900. In the illustrated example, thepinion bodies pinion bodies FIG. 10 . In contrast to a rack and pinion arrangement, where a gear engages a rack that linearly moves relative to the gear, thepinion bodies gear 902 may rotate, but not linearly move, in one embodiment. - As described above, connecting
plural pinion bodies device 932 and with thegear 902 can increase a torque capacity of thegear 902. Additionally or alternatively, coupling theplural pinion bodies gear 902 can reduce the size, weight, and/or complexity of the gear 902 (e.g., because fewer gear bodies may be used to form the gear 902). -
FIG. 13 is a perspective view of an embodiment of anothergear assembly 1300.FIG. 14 is a top view of thegear assembly 1300 shown inFIG. 13 .FIG. 15 is a side view of thegear assembly 1300 shown inFIG. 13 .FIG. 16 is a front view of thegear assembly 1300 shown inFIG. 13 . Thegear assembly 1300 includes anactuation gear 1302 formed from a singlepiece gear body 1304, similar to thegear 902 andgear body 904 shown inFIG. 9 . Optionally, thegear 1302 may be formed from another gear body, such as thegear body gear bodies - The
gear body 1304 andgear 1302 each include a common actuation axis ofrotation 1308 such that thegear 1302 rotates about the axis ofrotation 1308 along the illustrated direction 1310 (or an opposite direction). Similar to thegear bodies FIGS. 1 through 12 , thegear body 1304 includes a first surface having gear teeth. Thegear assembly 1300 may also include plural separate andseparable pinion bodies pinion bodies pinion bodies rotation rotation rotation pinion bodies rotation pinion bodies rotation 1308 of thegear 1302. Optionally, the axes ofrotation rotation 1308. - The
pinion bodies gear teeth 1326 that may be similar to thegear teeth FIGS. 1 through 12 . Thepinion bodies gear teeth 1326 of thepinion bodies gear 1302 on the same surface of thegear 1302 at the same time. This engagement between theteeth 1326 of thepinion bodies gear 1302 translates rotation of thepinion bodies gear 1302. - The
pinion bodies torque generating devices pinion bodies devices FIGS. 5 through 8 . Each of thedevices device 132 shown inFIG. 1 . Optionally, thedevices device devices pinion bodies gear 1302 may be coupled with one or more other components, such as a shaft, rod, or other device, such that rotation of thepinion bodies devices gear 1302 to rotate the one or more other components. For example, a shaft 1400 (represented by phantom lines inFIG. 14 and which may be similar to theshaft 200 shown inFIG. 2 ) may be disposed through the opening in thegear 1302 such that the shaft is oriented (e.g., elongated) along the axis of rotation 1308). The shaft 1400 may be an actuation device or coupled with an actuation device that causes the opening or closing of a valve or other component to move when the shaft 1400 is rotated. As a result, rotation of thepinion bodies devices gear assembly 1300 into actuation of the device to which thegear assembly 1300 is joined. - As shown in
FIG. 13 , theteeth 1326 of thepinion bodies pinion bodies teeth 1326 of thepinion body 1318 are located at or closer to an end of thepinion body 1318 that is closer to thetorque generating device 1332 than the opposite end of thepinion body 1318, and theteeth 1326 of thepinion body 1320 are located at or closer to an end of thepinion body 1320 that is farther from thetorque generating device 1332 than the opposite end of thepinion body 1320. Also as shown inFIGS. 13 , 14, and 15, thepinion bodies rotation pinion bodies rotation rotation gear 1302. For example, the plane in which the axes ofrotation gear 1302. - In the illustrated example, the
pinion bodies pinion bodies FIG. 14 . In contrast to a rack and pinion arrangement, where a gear engages a rack that linearly moves relative to the gear, thepinion bodies gear 1302 may rotate, but not linearly move, in one embodiment. - As described above, connecting
plural pinion bodies gear 1302 can increase a torque capacity of thegear 1302. Additionally or alternatively, coupling theplural pinion bodies gear 1302 can reduce the size, weight, and/or complexity of the gear 1302 (e.g., because fewer gear bodies may be used to form the gear 1302). Additionally or alternatively, using pluraltorque generating devices pinion bodies devices gear 1302, also as described above. - In one or more of the embodiments of the inventive subject matter set forth herein, a rotary input force supplied from a torque generating device may be applied to the pinion bodies to drive the gear assemblies in one or both directions. The rotary input force can be generated by a number of methods, including but not limited to, manual hand crank or hand wheel device, electrically powered motors (such as AC or DC drive or servomotors), hydraulic motors, or the like. The rotary input force may be supplied to the pinion bodies through a common gear train that includes one or more drive gears and which acts to synchronize rotation of the pinion bodies with respect to each other and the mating gear bodies (e.g., gears or gear teeth) of the pinion bodies. Optionally, rotary input forces may be independently supplied to each pinion body by separate torque generating devices attached to each respective pinion body. These rotary input forces may be synchronized with each other, such as by the separate torque generating devices rotating the separate pinion bodies at the same speed. The torque generating devices may be synchronized by incorporating control software in combination with speed and/or position sensing devices affixed to the pinion bodies and/or gear bodies, or using other techniques and/or components. To further aid in the synchronization of the pinion bodies with respect to their associated gear bodies, supplemental mechanical components may also be incorporated in either or both the pinion bodies and gear bodies consisting of compression or torsion spring devices situated axially within or around the shaft and hub features in such a manner as to absorb or reduce the amount of radial and/or axial play in the assemblies and permit balanced load sharing between the various components of the gear assemblies.
- The separate and separable gear bodies used to form one or more of the gears described herein may be configured in multiple ways to enable attachment to a hub or bearing mechanism, which may be represented by the shafts shown in phantom lines in the Figures. An operating load such as a valve control may be connected to the gear assemblies such that rotation of the gears in one direction by the pinion bodies and the torque generating devices opens a valve and rotation of the gears in another direction by the pinion bodies and the torque generating devices closes the valve.
- One or more of the gear assemblies described herein may be enclosed or housed in a casing, which acts to contain the gear and pinion bodies along with their respective supporting elements such as bearings and shafts. The casing may also be configured in numerous manners to enable attachment to a valve or other device that is actuated by the respective gear assembly.
- In one aspect, one or more of the gear assemblies described herein may be used to provide high density power transmission for systems such as hydraulic systems, pneumatic systems, other geared mechanisms such as planetary or harmonic drives and worm gearing, traction motors/drives, or the like. With respect to submersible vehicles such as submarines, the gear assemblies may be used to control hydraulic actuators of onboard mechanical actuation systems. Some examples include, but are not limited to, navigational or steering control surfaces such as bow planes or rudders, propulsion control mechanisms, communication systems such as retractable antennae or periscopes, actuation of control valves incorporated in fluid or air transfer pipes and systems contained within the pressure hull of the submarine, or the like.
- In an embodiment, a gear assembly includes an actuation gear and plural separate pinion bodies. The actuation gear has first gear teeth on one or more surfaces of the gear and is configured to rotate around an actuation axis of rotation. The pinion bodies have second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear. Each of the plural separate pinion bodies are configured to be rotated about respective pinion axes of rotation to cause rotation of the actuation gear around the actuation axis of rotation.
- In one aspect, the pinion axes of rotation of the plural separate pinion bodies are oriented perpendicular to the actuation axis of rotation of the actuation gear.
- In one aspect, the plural separate pinion bodies are configured to be coupled with one or more drive gears connected with a torque generating device that generates torque to rotate the plural separate pinion bodies such that rotation of the plural separate pinion bodies is synchronized by rotation of the one or more drive gears by the torque generating device.
- In one aspect, the rotation of the plural separate pinion bodies is synchronized when the plural separate pinion bodies rotate at a common speed.
- In one aspect, the torque generating device is a single motor.
- In one aspect, the actuation gear includes the first gear teeth on opposite first surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
- In one aspect, the actuation gear is formed from plural gear bodies each having one of the first surfaces and an opposite second surface. The second surfaces of the plural gear bodies can face each other.
- In one aspect, the plural gear bodies are offset from each other such that the second surfaces of the plural gear bodies are spaced apart from each other.
- In one aspect, the plural separate pinion bodies are configured to be coupled with plural separate torque generating devices so the plural separate torque generating devices separately rotate the plural separate pinion bodies.
- In one aspect, the actuation gear includes the first gear teeth on opposite surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
- In one aspect, the plural separate pinion bodies are configured to be separately rotated by the plural separate torque generating devices at a common speed.
- In one aspect, the pinion axes of rotation are coplanar in a plane that is disposed on one side of the actuation gear such that the actuation gear and the plane are parallel to each other.
- In the disclosures, the words “a” or “an” are to be taken to include both the singular and the plural. Conversely, any reference to plural items shall, where appropriate, include the singular.
- From the foregoing it will be observed that numerous modification and variations can be effectuated without departing from the true spirit and scope of the novel concepts of the presently described inventive subject matter. It is to be understood that no limitation with respect to the specific embodiments illustrated is intended or should be inferred. The disclosure is intended to cover by the appended claims all such modifications as fall within the scope of the claims.
- It is to be understood that the above description is intended to be illustrative, and not restrictive. For example, the above-described embodiments (and/or aspects thereof) may be used in combination with each other. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the inventive subject matter without departing from its scope. While the dimensions and types of materials described herein are intended to define the parameters of the inventive subject matter, they are by no means limiting and are exemplary embodiments. Many other embodiments will be apparent to one of ordinary skill in the art upon reviewing the above description. The scope of the inventive subject matter should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. In the appended claims, the terms “including” and “in which” are used as the plain-English equivalents of the respective terms “comprising” and “wherein.” Moreover, in the following claims, the terms “first,” “second,” and “third,” etc. are used merely as labels, and are not intended to impose numerical requirements on their objects. Further, the limitations of the following claims are not written in means-plus-function format and are not intended to be interpreted based on 35 U.S.C. §112(f), unless and until such claim limitations expressly use the phrase “means for” followed by a statement of function void of further structure.
- This written description uses examples to disclose several embodiments of the inventive subject matter and also to enable one of ordinary skill in the art to practice the embodiments of inventive subject matter, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the inventive subject matter is defined by the claims, and may include other examples that occur to one of ordinary skill in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (23)
1. A gear assembly comprising:
an actuation gear having first gear teeth on one or more surfaces of the gear, the actuation gear configured to rotate around an actuation axis of rotation; and
plural separate pinion bodies having second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear, wherein each of the plural separate pinion bodies are configured to be rotated about respective pinion axes of rotation to cause rotation of the actuation gear around the actuation axis of rotation.
2. The gear assembly of claim 1 , wherein the pinion axes of rotation of the plural separate pinion bodies are oriented perpendicular to the actuation axis of rotation of the actuation gear.
3. The gear assembly of claim 1 , wherein the plural separate pinion bodies are configured to be coupled with one or more drive gears connected with a torque generating device that generates torque to rotate the plural separate pinion bodies such that rotation of the plural separate pinion bodies is synchronized by rotation of the one or more drive gears by the torque generating device.
4. The gear assembly of claim 3 , wherein the rotation of the plural separate pinion bodies is synchronized when the plural separate pinion bodies rotate at a common speed.
5. The gear assembly of claim 3 , wherein the torque generating device is a single motor.
6. The gear assembly of claim 1 , wherein the actuation gear includes the first gear teeth on opposite first surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
7. The gear assembly of claim 6 , wherein the actuation gear is formed from plural gear bodies each having one of the first surfaces and an opposite second surface, wherein the second surfaces of the plural gear bodies face each other.
8. The gear assembly of claim 7 , wherein the plural gear bodies are offset from each other such that the second surfaces of the plural gear bodies are spaced apart from each other.
9. The gear assembly of claim 1 , wherein the plural separate pinion bodies are configured to be coupled with plural separate torque generating devices so the plural separate torque generating devices separately rotate the plural separate pinion bodies.
10. The gear assembly of claim 9 , wherein the actuation gear includes the first gear teeth on opposite surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
11. The gear assembly of claim 9 , wherein the plural separate pinion bodies are configured to be separately rotated by the plural separate torque generating devices at a common speed.
12. The gear assembly of claim 1 , wherein the pinion axes of rotation are coplanar in a plane that is disposed on one side of the actuation gear such that the actuation gear and the plane are parallel to each other.
13. A gear assembly comprising:
an actuation gear having first gear teeth on one or more surfaces of the gear; and
plural separate pinion bodies having second gear teeth configured to mesh with the first gear teeth of the actuation gear in plural separate mesh zones of the actuation gear, the plural separate pinion bodies are configured to be rotated about respective parallel pinion axes of rotation to cause rotation of the actuation gear around an actuation axis of rotation of the actuation gear, wherein the pinion axes of rotation are oriented perpendicular to the actuation axis of rotation.
14. The gear assembly of claim 13 , wherein the plural separate pinion bodies are configured to be coupled with one or more drive gears connected with a torque generating device that generates torque to rotate the plural separate pinion bodies such that rotation of the plural separate pinion bodies is synchronized by rotation of the one or more drive gears by the torque generating device.
15. The gear assembly of claim 14 , wherein the rotation of the plural separate pinion bodies is synchronized when the plural separate pinion bodies rotate at a common speed.
16. The gear assembly of claim 14 , wherein the torque generating device is a single motor.
17. The gear assembly of claim 13 , wherein the actuation gear includes the first gear teeth on opposite first surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
18. The gear assembly of claim 17 , wherein the actuation gear is formed from plural gear bodies each having one of the first surfaces and an opposite second surface, wherein the second surfaces of the plural gear bodies face each other.
19. The gear assembly of claim 17 , wherein the plural gear bodies are offset from each other such that the second surfaces of the plural gear bodies are spaced apart from each other.
20. The gear assembly of claim 13 , wherein the plural separate pinion bodies are configured to be coupled with plural separate torque generating devices so the plural separate torque generating devices separately rotate the plural separate pinion bodies.
21. The gear assembly of claim 20 , wherein the actuation gear includes the first gear teeth on opposite surfaces of the actuation gear and the plural separate pinion bodies are laterally offset from each other such that the second gear teeth of the plural separate pinion bodies engage the first gear teeth of the actuation gear on the opposite surfaces of the actuation gear.
22. The gear assembly of claim 20 , wherein the plural separate pinion bodies are configured to be separately rotated by the plural separate torque generating devices at a common speed.
23. The gear assembly of claim 13 , wherein the pinion axes of rotation are coplanar in a plane that is disposed on one side of the actuation gear such that the actuation gear and the plane are parallel to each other.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/641,509 US20160076621A1 (en) | 2013-09-17 | 2015-03-09 | Synchronized dual drive gear assemblies and methods |
US15/787,143 US10781887B2 (en) | 2013-09-17 | 2017-10-18 | Synchronized dual drive gear assemblies and methods |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201361878892P | 2013-09-17 | 2013-09-17 | |
US14/486,677 US20150075325A1 (en) | 2013-09-17 | 2014-09-15 | Synchronized dual drive gear assemblies and methods |
US14/641,509 US20160076621A1 (en) | 2013-09-17 | 2015-03-09 | Synchronized dual drive gear assemblies and methods |
Related Parent Applications (1)
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US14/486,677 Continuation US20150075325A1 (en) | 2013-09-17 | 2014-09-15 | Synchronized dual drive gear assemblies and methods |
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US15/787,143 Division US10781887B2 (en) | 2013-09-17 | 2017-10-18 | Synchronized dual drive gear assemblies and methods |
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US20160076621A1 true US20160076621A1 (en) | 2016-03-17 |
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US14/641,509 Abandoned US20160076621A1 (en) | 2013-09-17 | 2015-03-09 | Synchronized dual drive gear assemblies and methods |
US15/787,143 Active 2036-02-24 US10781887B2 (en) | 2013-09-17 | 2017-10-18 | Synchronized dual drive gear assemblies and methods |
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US14/486,677 Abandoned US20150075325A1 (en) | 2013-09-17 | 2014-09-15 | Synchronized dual drive gear assemblies and methods |
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US15/787,143 Active 2036-02-24 US10781887B2 (en) | 2013-09-17 | 2017-10-18 | Synchronized dual drive gear assemblies and methods |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11463023B2 (en) | 2016-05-10 | 2022-10-04 | Samsung Electronics Co., Ltd. | Triboelectric generator |
Families Citing this family (5)
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US9664275B2 (en) * | 2015-07-21 | 2017-05-30 | Chu Kwong Chak | Zero backlash right angle transmission system and method |
WO2019016769A1 (en) * | 2017-07-20 | 2019-01-24 | Pienaar Abel Albertus | A gearbox arrangement |
JP6911621B2 (en) * | 2017-08-08 | 2021-07-28 | 株式会社安川電機 | Reducer and actuator |
US11499615B2 (en) * | 2020-09-29 | 2022-11-15 | GM Global Technology Operations LLC | Compact split torque transmission for wide overall ratio coverage |
KR20220118011A (en) * | 2021-02-18 | 2022-08-25 | 에스케이하이닉스 주식회사 | Memory device and operating method of memory device |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1244223A (en) * | 1916-05-03 | 1917-10-23 | William J Mcinish | Gearing. |
US1304081A (en) * | 1919-05-20 | Power transmission | ||
US1384483A (en) * | 1920-02-21 | 1921-07-12 | Anthony J Wissel | Driving-gear system |
US1740756A (en) * | 1926-10-26 | 1929-12-24 | Deutsche Schiff & Maschb Ag | Power-transmission gear |
US1817216A (en) * | 1925-01-09 | 1931-08-04 | Luth & Rosens Elek Ska Aktiebo | Geared electric motor unit |
US3083680A (en) * | 1961-12-27 | 1963-04-02 | Gen Electric | Flexible drive-shaft assembly with self-aligning bearings |
US3111111A (en) * | 1961-10-26 | 1963-11-19 | Gen Electric | Bevel gear drive |
US3374687A (en) * | 1965-03-20 | 1968-03-26 | Wagner Josef | Transmission for helicopter rotor shafts |
US3397590A (en) * | 1967-03-02 | 1968-08-20 | Tektronix Inc | Helical gear drive mechanism with anti-backlash means |
US3727574A (en) * | 1971-08-30 | 1973-04-17 | Volvo Penta Ab | Outboard drive for a boat |
US4266436A (en) * | 1978-06-14 | 1981-05-12 | Wgw Westdeutsche Getriebe- Und Kupplungswerke Gmbh | Torque division gearing |
US4287790A (en) * | 1979-10-11 | 1981-09-08 | Mitsui Engineering And Shipbuilding Co., Ltd. | High-speed bevel gear transmission system |
US4297907A (en) * | 1979-06-01 | 1981-11-03 | Kaman Aerospace Corporation | Torque splitting gear drive |
US4429586A (en) * | 1979-10-04 | 1984-02-07 | BHS-Bayerische Berg, Hutten-und Salzwerke Aktiengesellschaft | Double-oblique-toothed two-stage spur wheel drive |
US4762022A (en) * | 1986-07-03 | 1988-08-09 | Johnshoy Edward W | Torque retaining and proportioning differential drive assembly |
US4803891A (en) * | 1987-03-12 | 1989-02-14 | Takashi Takahashi | Transmission for controlled equipment |
US6916140B2 (en) * | 2003-09-24 | 2005-07-12 | Yakov Fleytman | Method of producing an enveloping worm |
US9243700B1 (en) * | 2015-01-20 | 2016-01-26 | Robert Harold DeBoth | Coupled worm planetary gear continuously variable ratio transmission |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2479406A (en) * | 1946-03-29 | 1949-08-16 | United Aircraft Corp | Bevel gear drive |
US3408954A (en) * | 1965-02-16 | 1968-11-05 | Rheinstahl Henschel Ag | Driving mechanism for a railway truck |
US5233886A (en) * | 1992-05-26 | 1993-08-10 | Lucas Western, Inc. | Increased capacity face gear arrangement for transmitting torque through an angle and to a plurality of power extraction paths |
US6855087B2 (en) * | 2002-11-19 | 2005-02-15 | Visteon Global Technologies, Inc. | Axle assembly |
-
2014
- 2014-09-15 US US14/486,677 patent/US20150075325A1/en not_active Abandoned
-
2015
- 2015-03-09 US US14/641,509 patent/US20160076621A1/en not_active Abandoned
-
2017
- 2017-10-18 US US15/787,143 patent/US10781887B2/en active Active
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1304081A (en) * | 1919-05-20 | Power transmission | ||
US1244223A (en) * | 1916-05-03 | 1917-10-23 | William J Mcinish | Gearing. |
US1384483A (en) * | 1920-02-21 | 1921-07-12 | Anthony J Wissel | Driving-gear system |
US1817216A (en) * | 1925-01-09 | 1931-08-04 | Luth & Rosens Elek Ska Aktiebo | Geared electric motor unit |
US1740756A (en) * | 1926-10-26 | 1929-12-24 | Deutsche Schiff & Maschb Ag | Power-transmission gear |
US3111111A (en) * | 1961-10-26 | 1963-11-19 | Gen Electric | Bevel gear drive |
US3083680A (en) * | 1961-12-27 | 1963-04-02 | Gen Electric | Flexible drive-shaft assembly with self-aligning bearings |
US3374687A (en) * | 1965-03-20 | 1968-03-26 | Wagner Josef | Transmission for helicopter rotor shafts |
US3397590A (en) * | 1967-03-02 | 1968-08-20 | Tektronix Inc | Helical gear drive mechanism with anti-backlash means |
US3727574A (en) * | 1971-08-30 | 1973-04-17 | Volvo Penta Ab | Outboard drive for a boat |
US4266436A (en) * | 1978-06-14 | 1981-05-12 | Wgw Westdeutsche Getriebe- Und Kupplungswerke Gmbh | Torque division gearing |
US4297907A (en) * | 1979-06-01 | 1981-11-03 | Kaman Aerospace Corporation | Torque splitting gear drive |
US4429586A (en) * | 1979-10-04 | 1984-02-07 | BHS-Bayerische Berg, Hutten-und Salzwerke Aktiengesellschaft | Double-oblique-toothed two-stage spur wheel drive |
US4287790A (en) * | 1979-10-11 | 1981-09-08 | Mitsui Engineering And Shipbuilding Co., Ltd. | High-speed bevel gear transmission system |
US4762022A (en) * | 1986-07-03 | 1988-08-09 | Johnshoy Edward W | Torque retaining and proportioning differential drive assembly |
US4803891A (en) * | 1987-03-12 | 1989-02-14 | Takashi Takahashi | Transmission for controlled equipment |
US6916140B2 (en) * | 2003-09-24 | 2005-07-12 | Yakov Fleytman | Method of producing an enveloping worm |
US9243700B1 (en) * | 2015-01-20 | 2016-01-26 | Robert Harold DeBoth | Coupled worm planetary gear continuously variable ratio transmission |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11463023B2 (en) | 2016-05-10 | 2022-10-04 | Samsung Electronics Co., Ltd. | Triboelectric generator |
Also Published As
Publication number | Publication date |
---|---|
US20150075325A1 (en) | 2015-03-19 |
US20180038447A1 (en) | 2018-02-08 |
US10781887B2 (en) | 2020-09-22 |
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Owner name: ILLINOIS TOOL WORKS INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GREEN, SHAWN M.;REEL/FRAME:036093/0522 Effective date: 20141022 |
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STCB | Information on status: application discontinuation |
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