Arrowhead
US4807889A · kind A · utility
25Cited by
9References
16Claims
0Family size
Inventor
Key dates
| Filing date | Apr 15, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Apr 15, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B6/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An arrowhead assembly comprising an elongated body with longitudinally oriented slots spaced about the periphery of the body, and a bore extending inwardly from a forward end of the body. The slots have an opening portion which extends deep enough into the body to open into the bore. Removable blades are engaged in the slots. Each blade has a rearwardly projecting tongue extending into the bore through the opening portion of the slot. The blades are secured in place by a removable tip screwed onto the forward end of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.