Submersible switch point machine
US10822005B2 · kind B2 · utility
0Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L5/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved switch point machine is provided which can seal out water, even if the machine itself becomes submerged. The operating rod and the point indicating rod that extend out of the switch box housing should be ground round and have a smooth surface for an improved seal. Those rods are preferably chrome plated. Dynamic hydraulic seals can be used to seal out moisture. Internal components, within the switch box housing, should also be sealed to be water resistant in the event water does enter the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.