Fastener driving tool
US7322501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jul 8, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cylinder is constituted such that the cylinder includes a large diameter portion constituted by forming a portion thereof brought into contact with an O ring by a diameter larger than a diameter of other portion when a piston is disposed at an upper dead center and a small diameter portion formed downward from the large diameter portion, and a fastening margin is provided between an outer periphery of the O ring and an inner periphery of the cylinder even when the piston is disposed at any position from the upper dead center to a lower dead center and a clearance is provided between an inner periphery of the O ring and an outer periphery of a groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.