Robert William Swanson

US Patent:

62605712, Jul 17, 2001

Filed:

Dec 14, 1998

Appl. No.:

9/211580

Inventors:

John R. Lind - Burnsville MN
Robert L. Swanson - Ham Lake MN

Assignee:

Survival Engineering, Inc. - Burnsville MN

International Classification:

F16K 1714

US Classification:

137 683

Abstract:

A raft inflation valve has an elongated valve body with first and second ends, and a center bore. A cylindrical member has first and second ends slidably mounted in the center bore. A spring urges the cylindrical member towards the first end of the valve body. An arm is pivotally secured to the first end of the valve body to engage the first end of the cylinder member, and to move the cylinder member towards the second end of the valve body. A cutting element is on the second end of the cylinder member. A pressure gas filled vessel is secured to the second end of the valve body and has a gas discharge port. A seal member is on the gas discharge port of the vessel and is punctured by the cutting element when the arm moves the cylinder member towards the second end of the valve body. A space is in the center bore around the second end of the cylinder member. An annular groove is on the outside of the valve body in communication with the space.

US Patent:

51881420, Feb 23, 1993

Filed:

Jan 27, 1992

Appl. No.:

7/826106

Inventors:

John R. Lind - Burnsville MN
Robert L. Swanson - Blaine MN

Assignee:

Survival Engineering, Inc. - Burnsville MN

International Classification:

F16K 1520

US Classification:

137223

Abstract:

A swivel valve has a valve body having an elongated bore with both the valve body and the bore having first and second ends. A gas or fluid port is located in the first end of the valve body and is in communication with the first end of the bore. A passageway extends from the second end of the bore and terminates in an annular groove extending around the outer surface of the valve body. A swivel connection is rotatably mounted on the valve body around said annular groove and has a passageway in communication with the annular groove. Sealing rings are located on opposite sides of the annular groove to prevent the escape of gas from the groove to the atmosphere between the swivel connection and the outer surface of the valve body, and to equalize the gas pressure forces on the swivel connection.

US Patent:

52038319, Apr 20, 1993

Filed:

Oct 5, 1992

Appl. No.:

7/956407

Inventors:

John R. Lind - Burnsville MN
Robert L. Swanson - Ham Lake MN

Assignee:

Survival Engineering, Inc. - Burnsville MN

International Classification:

F16K 1520

US Classification:

137 1

Abstract:

A topping and dumping valve is provided for inflating and deflating inflatable structures, such as life rafts and military assault boats. The valve includes a first cylindrical body mounted in the inflatable structure, and a second cylindrical body threadably mounted in the first body for movement between first and second positions. In the first position, air is directed through a passageway in the second body and through inflation ports in the first body so as to move a normally closed flapper seal out of sealing engagement with the inflation ports, thereby inflating the buoyancy chamber of the structure. When the second body is in the second position, deflation ports in the first body allow air from the buoyancy chamber to escape through the deflation ports and the passageway in the second body to the atmosphere. A protective cap is provided for closing the passageway in the second body when the valve is not being used during inflation and deflation of the inflatable structure.