Endless retainer of guide device and fabrication method thereof
US5988883A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49691
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An endless retainer of a guide device including a number of rolling bodies arranged at predetermined intervals for rolling at an inside of an infinite track formed in the guide device, a flexible resin connector having interposing portions interposed among the respective rolling bodies and connecting portions for connecting the respective interposing portions for holding the number of rolling bodies in an aligned state and rotatably, and the resin connector is molded by an injection molding with the rolling bodies as cores by using a resin having a dimension change rate before and after an oil absorbing or a water absorbing treatment larger than a mold shrinkage rate and is provided with clearances between the resin connector and the rolling bodies formed by the oil absorbing or the water absorbing treatment whereby handling thereof is facilitated without detaching the rolling bodies, automation of integrating the endless retainer to the guide device can be carried out and extremely smooth rotatability can be provided to the rolling bodies with certainty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.