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| Number | Title | Issue Date |
| 6015273 | Electromagnetic reciprocating compressor with spring assembly mounted around piston An electromagnetic reciprocating compressor has a body (1, 2), a piston (10) reciprocating in the body, and an electromagnetic drive (22, 23, 24) for the piston. The piston has a piston head (11) which slides in a cylinder (12) in the body to effect compr... | 01/18/2000 |
| 5983428 | Patient supports and methods of operating them In operation of a support for a patient's body, used in medical or veterinary treatment, which applies alternating-pressure to the body in order to reduce or minimize the risk of pressure sores caused by prolonged pressure on the skin, inflatable cells of... | 11/16/1999 |
| 5920934 | Readily separable, three mode connector for air-inflatable support A connector for use in connecting an air-inflatable mattress to a control unit, where the connector has three modes of operation: Off; On; and CPR (Cardio-Pulmonary Resuscitation) when the male body part and the female body part are mutually engaged. Thes... | 07/13/1999 |
| 5727932 | Electromagnetic reciprocating compressor An electromagnetic reciprocating compressor has a body (1, 2), a piston (10) reciprocating in a cylinder (12) in the body and a piston guide (14) in the form of an insert which is radially located relative to the axis of the cylinder (12) by fitting again... | 03/17/1998 |
| 5603612 | Electromagnetic reciprocating compressor An electromagnetic reciprocating compressor has a body (1, 2), a piston (10) reciprocating in a cylinder (12) in the body and a piston guide (14) in the form of an insert which is radially located relative to the axis of the cylinder (12) by fitting again... | 02/18/1997 |
| 5597294 | Electromagnetic linear compressor with rotational bearing between springs An electromagnetic linear compressor has a linearly reciprocating piston (10) biased in one direction by a helical coil spring system. A rotational bearing (40) supports one end of the spring system (20a, 20b). To avoid uneven wear due to forces applied b... | 01/28/1997 |
| 5500965 | Cushion A cushion for the seat of a chair is provided, having at least two groups of cyclically inflatable tubes (4, 6, 8, 10), each group comprising at least one tube. Control means (18) inflates and deflates each group sequentially. The cushion also has a buffe... | 03/26/1996 |
