11. The ring gear is replaced by gear teeth above and below the threaded portion of the screw shaft. 12. Standard profile angles are established in connection with standard proportions of gear teeth and standard gear cutting tools. 13. These offer output of 2-64X the original number of gear teeth or magnetic poles on the target wheel. 14. The planetary gear housing features external gear teeth and can be rotated by a motor and worm gear. 15. The angled teeth engage more gradually than do spur gear teeth , causing them to run more smoothly and quietly. 16. Examples of such sections are the transverse section of bevel gear teeth and the normal section of helical teeth. 17. At the rear of the camshaft was cut a set of helical gear teeth , these being used to spin the distributor. 18. His treatise on " chronometric marvels " is the first work describing a universal joint and providing the classification of gear teeth . 19. The computed values start with 1 year / revolution for the b1 gear, and the remainder are computed directly from gear teeth ratios. 20. It could have gear teeth on the outside and the air gun could drive a smaller gear that meshes with this large gear.
