3Hendrik K, Emmeloord N. Face gear transmission[D]. United States Patent,No. 4744263, May 17, 1998.
4Paydor L I., Alfonso F, Claudio Z, et ah Design, generation, and stress Analysis of two versions of geometry of face-gear drives[J]. Mechanism and Machine Theory, 2002 (37) :1179- 1211.
5Paydor L L, Alfonso F, Matt H. Design, generateon and TCA of new type of asymmetric face gear drive with modi fled geometry[J]. Comput. Methods Appl. Mech. Engrg, 2001,(190) : 5837-5865.
6LItvin F L, Ignacio Gonzalez Perez,Alfonso F, et al. De sign, generation and stress analysis of face gear drive with helical pinion[J].Comput. Methods Appl. Mech. Engrg, 2005,(194) :3870-3901.
7Litvin F L. Gear geometry and applied theory[M]. Prentice Hall, Inc. , Englewood Cliffs, NJ : 1991.
8Faydor L. Litvin, Alfonso Fuentes, Ignacio Gonzalez - Perez. Modified involute helical gears computerized design, simulation of meshing and stress analysis, Comput. Methods Appl. Mech. Engrg. 2003, (192) : 3 619 - 3 655.
9Faydor L. Litvin, Alfonso Fuenteslgnacio Gonzalez-Perez. New version of Novikov-Wildhaber helical gears: computerized design, simulation of meshing and stress analysis. Comput. Methods Appl. Mech. Engrg. 2002, (1910 5707 - 5740.
