External device for selectively converting a pillow block between free and held positions
US4235489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Aug 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S384/903
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pillow block assembly including a housing having an internal seat for a bearing and retaining means in the form of snap rings on both sides of the outer ring for limiting axial displacement of the outer ring of the bearing in the seat. The pillow block is convertible between free and held units. One form of conversion device comprises a screw member including a conical tip which engages in an annular groove in the outer ring having tapered circumferential sidewalls complementing the tip of the screw member. The screw member is actuatable between a first position permitting movement of the outer ring relative to the housing and a second position preventing axial movement of the outer ring in the pillow block housing. The screw member has a port extending therethrough and a head portion with a lubricant fitting and at least one radial port is provided in the outer ring connecting the annular groove to the interior of the bearing. This arrangement permits lubrication of the bearing through the screw member. In another embodiment, the conversion device includes another groove in the pillow block seat outboard of an enlarged groove for one of the pair of retaining rings and a third re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.