Automatic pet feeding apparatus
US3942478A · kind A · utility
11Cited by
4References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jan 30, 1975 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | Jan 30, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K5/0291
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An automatic pet feeder has several troughs, each with a lid hinged thereto. A T-shaped cam follower extends from each lid and rides against a cylindrical cam tube which makes a single revolution during the feeding period. I-shaped slots each extend partially around the tubular cam through a selected arc so that it underlies its associated cam follower at a desired time, wherein biasing means force the lid upward to swing the cam follower completely through the slot and hold the lid in open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.