Gantry robot construction and drive mechanism
US4998442A · kind A · utility
Inventors
Key dates
| Filing date | Oct 30, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Oct 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19981
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A gantry robot construction is provided. The construction includes a pair of elongated substantially spaced parallel rails, a bridge spanning and substantially perpendicular to the rails and movable relative to the rails, and a robot head and support mounted on the bridge and movable relative to the bridge. The rails are positioned along the width or shorter side of the work area with the bridge spanning the length or longer side of the work area. An improved rack and pinion apparatus is also disclosed that is used in association with the gantry robot construction. There is a zero degree pressure angle between the rack and pinion. In the pinion the base circle is congruent with the pitch circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.