Process for aligning a reciprocable frame between parallel vertically extending shifts of a mast of a fork lift
US4999902A · kind A · utility
11Cited by
21References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49895
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention incorporates a unique process for alignment of a reciprocable frame between the shafts of the mast of a fork lift. By using a shim having a thickness of about one-eighth inch between the inside surfaces of the shafts and the edges of the frame, guide rollers on the outside of the shafts can be adjusted to hold the frame in alignment. Guide roller adjustment is accomplished by mounting the rollers on eccentrics which are adjusted after the shim is in place. After adjustment the rollers are locked in place. Then after the shim is removed the rollers inherently align the frame between the vertical shafts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.