Gear and method for making the same
First Claim
1. Gear for chain drives comprising a gear body made of a cast plastic material having a hub section, a gear rim section consisting of a plurality of circumferentially spaced spur teeth and a web section joining the hub and gear rim sections, a ring plate having a radial annular section completely embedded in the gear body and collar sections at the inner periphery of the radial annular section defining mounting means for the gear, the radial annular section of said ring plate 6 having at its outer radial edge 10, radially outwardly directed projections 13, which are located in each case in a tooth 12, and which are embedded in the casting material of the gear body 5, said projections extending beyond the bottom of the spaces 11 between adjacent spur teeth 12, and an axial opening 17 formed in the ring plate 6 adjacent each projection 13 and radially below it, said ring plate 6 having one or more axial slots 27 extending radially inwardly, starting in each case from one of the axial openings 17.
1 Assignment
0 Petitions
Accused Products
Abstract
Gear for chain drives comprising a gear body of cast material having a hub section, a gear rim section with spur teeth, and a web section joining said hub and gear rim sections, and a ring plate of metal embedded in the web section, the outer edge of said plate being near the bottom of the areas between the spur teeth and having axial openings filled with casting material around its periphery, said ring plate having at its outer radial edge, radially outwardly directed projections, which are located in each case in a tooth, and which are embedded in the casting material of the gear body, said projections extending beyond the bottom of the spaces between adjacent spur teeth, and an axial opening formed in the ring plate adjacent each projection and radially below it.
-
Citations
6 Claims
- 1. Gear for chain drives comprising a gear body made of a cast plastic material having a hub section, a gear rim section consisting of a plurality of circumferentially spaced spur teeth and a web section joining the hub and gear rim sections, a ring plate having a radial annular section completely embedded in the gear body and collar sections at the inner periphery of the radial annular section defining mounting means for the gear, the radial annular section of said ring plate 6 having at its outer radial edge 10, radially outwardly directed projections 13, which are located in each case in a tooth 12, and which are embedded in the casting material of the gear body 5, said projections extending beyond the bottom of the spaces 11 between adjacent spur teeth 12, and an axial opening 17 formed in the ring plate 6 adjacent each projection 13 and radially below it, said ring plate 6 having one or more axial slots 27 extending radially inwardly, starting in each case from one of the axial openings 17.
Specification