Stephen C Hanson

US Patent:

20130283595, Oct 31, 2013

Filed:

Jun 21, 2013

Appl. No.:

13/924308

Inventors:

Edgardo F. MARCELO - Irvine CA, US
Stephen C. HANSON - Palm Desert CA, US

International Classification:

B23P 19/10

US Classification:

29468

Abstract:

A method of aligning the rotors of a Roots-type blower includes the steps of immobilizing an idler gear with reference to a housing of a Roots-type blower. A drive rotor is fixedly disposed on a drive shaft inside the housing with an idler rotor engaged with the drive rotor and fixedly disposed on an idler shaft. A drive gear is rotatably disposed on the drive shaft and the idler gear is engaged with the drive gear and fixedly disposed on the idler shaft. The drive shaft is rotated in opposite directions to first and second extents of travel. Each extent of travel is defined by contact of the drive rotor against the idler rotor. The drive shaft is positioned at a determined rotational angle between the first and second extents of travel and the drive gear is then fixed to the drive shaft.

US Patent:

42676614, May 19, 1981

Filed:

Jan 21, 1980

Appl. No.:

6/113718

Inventors:

Stephen P. Hanson - Brea CA

Assignee:

Marvin Glass & Associates - Chicago IL

International Classification:

A63H 3300
F41B 302

US Classification:

46 1K

Abstract:

A launching device for launching toy vehicles or other objects includes a mechanism for sequentially launching of a plurality of the vehicles. The landing device includes a handle with a launching ramp defined thereon. Rotatably mounted on the handle is a vehicle support platform capable of holding a plurality of vehicles or objects to be launched. Propelling devices such as rubberbands are attached to the platform and are extended or tensioned by placement of a vehicle onto the platform. A latch is released to launch the vehicle by a trigger mounted on the handle. The toy also includes a biasing member for automatically rotating the platform relative to the launching ramp to position successive vehicles to be launched adjacent to the launching ramp. The rotating member may be a rubberband in which energy is stored by rotating or winding the platform relative to the handle through the employment of a winding mechanism.