Symmetrical traction drive
First Claim
1. A method of transferring rotational mechanical energy in a symmetric traction drive comprising:
- obtaining a central shaft having a shaft traction surface;
obtaining symmetric rollers having roller shafts, inner roller traction surfaces and outer roller traction surfaces;
mounting said roller shafts of said symmetric rollers in carriers so that said outer roller traction surfaces of said rollers are disposed to rotationally mate with said shaft traction surface of said central shaft to create a shaft traction interface, said carriers having posts that provide structural integrity to said carriers while allowing said carriers to flex on portions of said carriers between said posts where said roller shafts of said symmetric rollers are mounted on said carriers, which allows movement of said roller shafts of said symmetric rollers in a radial direction with respect to said central shaft;
placing traction rings on opposite sides of said symmetric rollers so that traction ring traction surfaces of said traction rings mate with said inner roller traction surfaces of said symmetric rollers to create a sloped traction interface that transfers said rotational mechanical energy between said traction rings and said symmetric rollers;
forcing said traction rings together which generates forces on said sloped traction interface, causing said symmetric rollers to move toward said central shaft and increase pressure on said shaft traction interface that creates friction in said shaft traction interface to transfer said rotational mechanical energy between said central shaft and said symmetric rollers.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a symmetrical traction drive that utilizes multi-diameter rollers having traction surfaces for transferring rotational mechanical energy between the shaft and a transfer gear. Multi-diameter rollers are mounted in carriers disposed between two substantially symmetrical ring gears. Sloped traction surfaces of the ring gears mate with inner traction surfaces on both sides of the multi-diameter rollers. Since force is applied to the inner traction surfaces on both sides of the multi-diameter rollers, forces are substantially equalized on each side of the multi-diameter rollers. An outer traction surface of the multi-diameter roller interfaces with a traction surface on the shaft. Speed reduction ratios of at least 20:1 or greater can be achieved. The high speed drive may include exhaust turbines, steam turbines, including a Tesla turbine or Schumacher turbine, compressors, combinations of turbines and compressors, high speed pumps, dentist drills, or other devices that operate with high rotational speed.
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Citations
64 Claims
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1. A method of transferring rotational mechanical energy in a symmetric traction drive comprising:
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obtaining a central shaft having a shaft traction surface; obtaining symmetric rollers having roller shafts, inner roller traction surfaces and outer roller traction surfaces; mounting said roller shafts of said symmetric rollers in carriers so that said outer roller traction surfaces of said rollers are disposed to rotationally mate with said shaft traction surface of said central shaft to create a shaft traction interface, said carriers having posts that provide structural integrity to said carriers while allowing said carriers to flex on portions of said carriers between said posts where said roller shafts of said symmetric rollers are mounted on said carriers, which allows movement of said roller shafts of said symmetric rollers in a radial direction with respect to said central shaft; placing traction rings on opposite sides of said symmetric rollers so that traction ring traction surfaces of said traction rings mate with said inner roller traction surfaces of said symmetric rollers to create a sloped traction interface that transfers said rotational mechanical energy between said traction rings and said symmetric rollers; forcing said traction rings together which generates forces on said sloped traction interface, causing said symmetric rollers to move toward said central shaft and increase pressure on said shaft traction interface that creates friction in said shaft traction interface to transfer said rotational mechanical energy between said central shaft and said symmetric rollers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A symmetric traction drive comprising:
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a central shaft having a shaft traction surface; symmetric rollers having roller shafts, inner roller traction surfaces and outer roller traction surfaces; carriers that hold said roller shafts so that said outer roller traction surfaces of said symmetric rollers are disposed to rotationally mate with said shaft traction surface; traction rings placed on opposite sides of said symmetric rollers that have sloped ring traction surfaces that mate with said inner roller traction surfaces of said symmetric rollers to create a sloped traction interface that transfers rotational mechanical energy between said symmetric rollers and said traction rings when said traction rings are forced together causing said carriers to flex where said carriers hold said roller shafts, so that said outer roller traction surfaces of said symmetric rollers are forced against said shaft traction surface to create a shaft traction interface that transfers rotational mechanical energy between said symmetric rollers and said shaft; posts on said carriers that provide structural integrity to said carriers while allowing said carriers to flex on portions of said carriers between said posts where said roller shafts are mounted on said carriers, which allows movement of said roller shafts in a radial direction with respect to said central shaft, and which causes a variation in pressure on said shaft traction interface, said movement of said roller shafts caused by variations of forces on said sloped traction interface when said traction rings are forced together. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A method of transferring rotational mechanical energy in a symmetric traction drive between an engine and a super-turbocharger that is both mechanically driven by said engine and by exhaust gases from said engine comprising:
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generating turbine rotational mechanical energy in a turbine from enthalpy of said exhaust gases produced by said engine; connecting a shaft to said turbine, said shaft having a shaft traction surface; connecting a compressor to said shaft; compressing intake air using said turbine rotational mechanical energy to rotate said compressor to supply compressed air to said engine; placing a plurality of planetary roller traction surfaces of a plurality of said symmetric planetary rollers of said symmetric traction drive in contact with said shaft traction surface so that a plurality of shaft traction interfaces are created between said plurality of planetary roller traction surfaces and said shaft traction surface; placing traction rings on opposite sides of said symmetric rollers so that traction ring traction surfaces of said traction rings mate with inner roller traction surfaces on said plurality of planetary rollers, which creates a plurality of sloped traction interfaces between said plurality of planet rollers and said ring roller; connecting said traction rings to at least one ring roller; forcing said traction rings together to generate forces on said sloped traction interfaces which causes said symmetric rollers to move towards said shaft traction surface of said shaft which increases pressure on said shaft traction interfaces so that said rotational mechanical energy is transferred between said traction rings and said symmetric rollers; mechanically coupling a ratio adjusting transmission to said ring roller and said engine to transfer a portion of said turbine rotational mechanical energy to said engine or a portion of said engine rotational mechanical energy to said compressor depending upon operating conditions of said engine. - View Dependent Claims (54, 55, 56, 57, 58)
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59. A super-turbocharger that is both mechanically driven by engine rotational mechanical energy from an engine and turbine rotational energy comprising:
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a turbine that generates said turbine rotational mechanical energy from enthalpy of exhaust gases produced by said engine; a compressor that compresses intake air and supplies compressed air to said engine; a shaft having portions that are connected to said turbine and said compressor, and a portion having a shaft traction surface; a symmetric traction drive disposed around said shaft traction surface, said traction drive comprising; a plurality of symmetric planetary rollers having a plurality of sloped inner roller traction surfaces and a plurality of outer planetary roller traction surfaces that interface with said shaft traction surface so that a plurality of shaft traction interfaces are created between said plurality of planetary roller traction surfaces and said shaft traction surface; traction rings disposed on opposite sides of said plurality of symmetric planetary rollers having sloped traction ring surfaces, said sloped traction ring traction surfaces disposed to mate with said plurality of sloped inner roller traction surfaces to form a sloped traction interface that transfers said turbine rotational mechanical energy to said engine and said engine rotational mechanical energy to said traction rings and said plurality of planet rollers; a ring roller that is connected to, or forms a portion of, said traction rings; a continuously variable transmission, that is mechanically coupled to said traction drive and said engine, that transfers a portion of turbine rotational mechanical energy to said engine, or a portion of said engine rotational mechanical energy to said traction drive depending upon operating conditions of said engine. - View Dependent Claims (60, 61, 62, 63, 64)
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Specification