Air removing apparatus
US4627796A · kind A · utility
Inventor
Key dates
| Filing date | Oct 3, 1984 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Oct 3, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Apparatus suitable for employment in the burping of a water bed comprises PA1 a screw thread or bayonet in the burping and/or filling opening of a waterbed having a removable cap, and PA1 air withdrawal means capable of withdrawing air and/or liquid from the waterbed having a cooperating element engageable with the fitting. The method of burping a waterbed comprises PA1 removing the cap of the fitting in the filling apparatus of a waterbed without substantial loss of liquid therefrom, PA1 attaching an air withdrawal device to the fitting about the opening from which the cap has been removed, PA1 actuating the air withdrawal device to withdraw air from the bed (with or without lifting of the region of the bag about the fitting to which the apparatus has been attached) and, PA1 detaching the air withdrawal device from the fitting when the fitting is positioned so as to minimize the risk of entry of air into the bag and, thereafter refitting the cap to the fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.