Toy gun piston with a detachable toothed structure
US8302588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Apr 9, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41B7/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A piston structure for a toy gun includes a piston body and a detachable toothed member. The piston body has a chute which is axially disposed on an outer surface of the piston body. The detachable toothed member is made of a metallic material and moveably disposed in the chute. The detachable toothed includes a plurality of teeth which are equally spaced in a lengthwise direction. The piston structure of the present invention provides a longer service life. In case the teeth of the detachable toothed member suffer a lot of wear and tear, the detachable toothed member can be detached from the chute and replaced with a new one to save the cost and to provide an environmental protection effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.