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| Number | Title | Issue Date |
| 7178484 | Apparatus for raising a sow in a farrowing crate In a farrowing pen which includes a pit and over the pit a first floor portion on which the sow can stand and lie and two further floor portions on each side of the first floor portion for receiving piglets of the sow and confining walls for locating the sow on the ... | 02/20/2007 |
| 7013837 | Method for building environment-affinitive pigpen and pigpen structure A pig pen structure has a walking passage and a plurality of pig houses for housing an animal installed along the walking passage. Each pig house has an evacuation room, a lodging room having front, back, and two side walls, and an evacuation room gate installed bet... | 03/21/2006 |
| 6823819 | Apparatus for raising a sow in a farrowing crate In a farrowing pen which includes a pit and over the pit a first floor section on which the sow can stand and lie and two further floor sections on each side of the first floor section for receiving piglets of the sow and confining walls for locating the sow on the ... | 11/30/2004 |
| 6382135 | Pig pen A pig pen has side walls joined together by end walls to form a substantially rectangular enclosure. An angled divider is pivotable inside the pen, having a first end pivotably arranged on a pivot on one end wall and second end attachable to any one of a ... | 05/07/2002 |
| 5921205 | Sow farrowing station A sow farrowing station to reduce the mortality of piglets includes a slab, a surrounding crate to constrain the sow, the slab defining within a crate a floor transport region consisting of independent pressure sensitive members which travel over the regi... | 07/13/1999 |
| 5372091 | Farrowing pig pen The invention relates to a pig farrowing pen and resides in directing air flows under the sow when standing to drive the piglets to a safe location and thereby prevent the piglets from being trapped and crushed as the sow moves from an elevated position t... | 12/13/1994 |
| 5233940 | Piglet protection apparatus In a pre-weaned piglet protector, sharp bursts of compressed air from dome shaped nylon air nozzles located one foot away from each other longitudinally in a farrowing area are used to irritate baby piglets. The farrowing area has a safety zone where the ... | 08/10/1993 |
| 5111769 | Farrowing crates In order to confine a sow in such a manner as to allow only limited movement of the sow, the crate has two side members (2, 3) each of which is pivoted at a corresponding end about a respective vertical axis and between which the sow is positioned in use.... | 05/12/1992 |
| 5074248 | Pig farrowing and weaning apparatus Pig farrowing apparatus comprises a restraining crate for a sow, a delivery chamber having a grid floor separated from the sow by a hinged door or flap, a piglet rearing chamber communicating with the delivery chamber and joined thereto by a ramp, and pig... | 12/24/1991 |
| 4793287 | Farrowing station with an electronic control A farrowing station for sows is provided which includes a first floor for the sow. At least one lateral floor section for piglets is provided on a portion of the perimeter of the first floor. The lateral floor sections and the first floor are movable to d... | 12/27/1988 |
| 4651677 | Apparatus for preventing shoats from being crushed to death in hog breeding operations and the use thereof as a device for indicating the start of the dam's birthing procedure Apparatus for preventing shoats from being crushed to death in hog breeding operations with at least one microphone associated with a farrowing pen accommodating the dam and the shoat, a noise detector which is connected to the microphone and which releas... | 03/24/1987 |
| 4528943 | Farrowing crates The crate comprises two side members, a front member in the form of a trough assembly and a back member in the form of a rear gate for confining a sow within the crate in such a manner as to allow only limited movement of the sow. Each side member consist... | 07/16/1985 |
| 4428324 | Method and apparatus for preventing piglets from suffocating under the dam in a brooding pen A method and apparatus prevents piglets from being suffocated under a sow by detecting when the sow stands up and establishing an unpleasant condition, specifically blowing air under the sow to discourage the piglets from moving under the sow. A pleasant ... | 01/31/1984 |
| 4351272 | Anti-crushing bar assembly for pig farrowing crates When a sow lies down in a conventional pig farrowing crate, piglets are often crushed as they are unable to move out of the way fast enough. This invention consists of an inwardly curved bar pivoted by the outer ends thereof between a pair of supports ext... | 09/28/1982 |
| 4145993 | Piglet saver A farrowing apparatus intended to prevent piglets from being crushed by their mother sow in which two adjacent chambers are provided for the piglets and the sow respectively. The sow is so confined that she may either stand up or lie down on her side in a... | 03/27/1979 |
