Self-contained impact tool
US3967771A · kind A · utility
70Cited by
5References
6Claims
0Family size
Inventor
Key dates
| Filing date | Dec 16, 1974 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Dec 16, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An impact tool, and particularly a nail driver, utilizing a vaporized combustible mixture which may be ignited upon demand to drive a piston and associated ram in a cylinder to accomplish work such as driving a nail. In a particularly preferred embodiment, a portion of the driving energy is stored and utilized to recharge the device for rapid semi-automatic demand operation. The recharge energy may be stored in, for example, a spring or in a pressurized high-pressure cylinder and the fuel stored in bulk and metered during the recharge process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.