Apparatus for defining a passageway through a composition
US7351011B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for defining a passageway through a composition between first and second locations. The apparatus has a cable pulling assembly and a support for the cable pulling assembly. The cable pulling assembly has a capstan assembly, with a part of the capstan assembly guided in movement around a first axis and engageable with a cable connected to a mole so as to cause a cable engaged by the part of the capstan assembly to be pulled as the part of the capstan assembly is driven around the first axis. The part of the capstan assembly has a circumferential groove, bounded by a surface and extending around the first axis, for reception of a cable to be pulled. The groove is configured so that a circumferentially localized force is applied by the groove surface to a cable operatively positioned in the groove tending to avoid circumferential slippage between the part of the capstan assembly and the cable operatively positioned in the groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.