Self-oiling portable bag-closing sewing machine with pump
USRE33382E · kind E · reissue
1Cited by
23References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1986 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Apr 8, 2006 |
Classification
- Technology area (CPC —)General
Abstract
A combined pump and oil reservoir and oil delivery apparatus directs oil to the internal chambers of a portable sewing machine where oil is distributed by pump pressure, gravity flow, capillary action, wicking, misting and movement of machine components. Oil is pumped into a manifold leading to upper and lower main drive shaft bearings and to the needle driving assembly for subsequent dispersion during rotation and reciprocation of machine parts to fling such oil outwardly within the internal chambers to oil machinery both directly and by misting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.