Lennart B Johnson

US Patent:

7677600, Mar 16, 2010

Filed:

Oct 29, 2007

Appl. No.:

11/978418

Inventors:

Lennart B. Johnson - Milford NH, US

International Classification:

A63C 17/14

US Classification:

280842, 280 11214

Abstract:

In-one aspect, a leg activated brake for a foot supporting rolling device, such as a roller ski. Roller skis generally have one wheel mounted to each end of the foot supporting frame which houses a ski binding for the skier's boot. The brake system mounts to the frame of the roller ski and when the brake is activated by the leg, the brake applies frictional force to the rear wheel to stop the roller ski.

US Patent:

8011734, Sep 6, 2011

Filed:

May 21, 2009

Appl. No.:

12/469815

Inventors:

Lennart B Johnson - Milford NH, US

International Classification:

B60B 19/08

US Classification:

301 51, 301 64303, 301 64202, 301 64305

Abstract:

A wheel for an in-line skate or other wheeled vehicle is disclosed that may be modified to alter the rolling resistance of the wheel. The wheel may be disassembled to change a tire on the outer surface of the wheel to one made of a harder or softer material, and to insert or change a grease of a chosen viscosity into a chamber inside the wheel. The two changes may be utilized singly or collectively to help set the rolling resistance of the wheel. The wheel may be retrofit onto existing in-line roller skates.

US Patent:

20060273532, Dec 7, 2006

Filed:

Jun 6, 2005

Appl. No.:

11/145800

Inventors:

Lennart Johnson - Milford NH, US

Assignee:

Jenex Inc. - Milford NH

International Classification:

A63C 17/14

US Classification:

280011214

Abstract:

In one aspect, a leg activated brake for a foot supporting rolling device, such as a roller ski. Roller skis generally have one wheel mounted to each end of the foot supporting frame which houses a ski binding for the skier's boot. The brake system mounts to the frame of the roller ski and when the brake is activated by the leg, the brake applies frictional force to the rear wheel to stop the roller ski.

US Patent:

57554501, May 26, 1998

Filed:

Oct 18, 1996

Appl. No.:

8/733813

Inventors:

Todd D. Ellis - Boston MA
David J. Lacorazza - Norwell MA
Daniel A. Nolan - Salem NH
Lennart B. Johnson - Milford NH

Assignee:

Reebok International Ltd. - Stoughton MA
V2-Jenex Inc. - Milford NH

International Classification:

A63C 1714

US Classification:

280 112

Abstract:

A braking system for an in-line skate. The skate includes a boot mounted on a chassis. A cuff is rotatably mounted on the chassis. The chassis has a plurality of wheels rotatably mounted thereon. The braking system for the skate includes a brake pad housing which is either fixedly or pivotally attached to a rear portion of the cuff, a brake pad disposed in the housing, and a roller arm rotatably mounted on the chassis. The roller arm is spring loaded so that when the brake is not in use, the roller arm is disposed above the wheels. The roller arm has a bearing assembly disposed therein, so that when the brake is actuated by a rearward rotation of the cuff, the brake pad engages the bearing assembly of the roller arm, thereby causing said bearing assembly to engage said at least one of the wheels to slow and/or stop the skate.

US Patent:

45388660, Sep 3, 1985

Filed:

Mar 7, 1983

Appl. No.:

6/473037

Inventors:

Lennart B. Johnson - Milford NH

Assignee:

Teradyne, Inc. - Boston MA

International Classification:

H01R 1362

US Classification:

339 17LM

Abstract:

The combination of a backplane having a plurality of backplane contacts, a daughter printed circuit board, and a daughter board connector carrying a plurality of contacts and means for applying a translational force between the backplane contacts and connector contacts.

US Patent:

40626172, Dec 13, 1977

Filed:

Feb 25, 1977

Appl. No.:

5/771953

Inventors:

Lennart B. Johnson - Milford NH

Assignee:

Teradyne, Inc. - Boston MA

International Classification:

H01R 1354

US Classification:

339 75M

Abstract:

A tester for backplanes, printed wiring boards and like electrical assemblies has contacts that mate without interference with contacts of the assembly under test, and has a displacement mechanism that shifts the assembly laterally. The lateral displacement brings the mated contacts into interfering engagement with each other for effecting electrical connection between them.

US Patent:

44752849, Oct 9, 1984

Filed:

Jun 3, 1982

Appl. No.:

6/384188

Inventors:

Lennart B. Johnson - Milford NH

Assignee:

Teradyne, Inc. - Boston MA

International Classification:

H05K 330
H01R 4300

US Classification:

29739

Abstract:

A pronged electrical contact is inserted into a circuit board by a tool with a cavity that is partially defined by upwardly converging inner surfaces shaped to mate with upwardly converging outer surfaces of the prongs.

US Patent:

53740718, Dec 20, 1994

Filed:

May 4, 1993

Appl. No.:

8/057691

Inventors:

Lennart B. Johnson - Milford NH

International Classification:

A63C 1714

US Classification:

280 112

Abstract:

A rolling device such as a roller ski or in-line skate that uses a roller of a hard material with the roller mounted to the frame of the roller ski or in-line skate in such a manner that it can be forcibly moved to contact the elastomeric wheel of the roller ski or in-line skate, causing the softer elastomeric material of the wheel to displace about the harder roller, resulting in a significant increase in rolling resistance with minimum frictional wear. A roller ski or in-line skate that uses, in conjunction with the aforementioned roller, a lever actuated brake permitting the roller ski or in-line skate to be stopped on down hill slopes.