William Kelly Oliver
Architects at Orch Dr, Englewood, CO

License number

Colorado 300637

Issued Date

Jun 17, 1966

Renew Date

Aug 1, 2011

Expiration Date

Oct 31, 2013

Type

Architect

Address

Address 2

9602 E Orchard Dr, Englewood, CO 80111
Englewood, CO

Professional information

Lawn Aerator Having Tine Assemblies Spaced Along A Shaft

US Patent:

5680903, Oct 28, 1997

Filed:

Feb 11, 1997

Appl. No.:

8/798573

Inventors:

William H. Oliver - Englewood CO

Assignee:

BlueBird International, Inc. - Englewood CO

International Classification:

A01B 4502

US Classification:

172 22

Abstract:

A lawn aerator has a series of tine assemblies spaced along a driven shaft driven by a motor. Each fine assembly has a plurality of tines for aeration extending in a substantially radial pattern about the driven shaft. The inner tine assemblies along the middle portion of the driven shaft are secured to the driven shaft to drive the aerator along the lawn as the driven shaft rotates. The outer tine assemblies adjacent to the ends of the driven shaft are rotatably mounted to the driven shaft. This permits the outer tine assemblies to rotate independently and thereby makes the aerator more maneuverable and easier to turn. Removable weights can be attached to either side of the aerator housing to help maintain a straight course when traversing a slope.