Self-locking anchor stake
US4144843A · kind A · utility
Inventor
Key dates
| Filing date | Nov 19, 1975 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Nov 19, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K1/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A self-locking anchor stake to which an animal may be tethered, comprising a first member having a tethering or hitching ring or pin thereon, a second stake member attached to the first member and adapted for driving into the earth to position the first member, and a pair of third members hingedly attached to the first member and having stake portions, each describing an arc of a circle with its center at the hinge connection of the third member to the first member. The second member is driven into the ground. The stake portion of each third member is then driven into the ground and crosses the plane of the second member to grip the earth between the second member and the stake portion of each third member and to lock the anchor stake firmly in position in the earth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.