Toy launch apparatus with momentum feature
US9562739B2 · kind B2 · utility
1Cited by
55References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2015 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Jul 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A toy launch apparatus for discharging soft foam darts, the launch apparatus having a cylinder, a piston, a launch spring and a dart tube. An air chamber with variable volume is formed between the cylinder and the piston and is divided into two or more sections, a first section where there is little or no resistance to relative movement between the cylinder and the piston so that there is a momentum gain, and a second section where there is rapid compression and increasing pressure to cause a loaded dart to be discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.