Donald Noren

US Patent:

48909688, Jan 2, 1990

Filed:

Feb 15, 1989

Appl. No.:

7/311013

Inventors:

John R. Beach - Elmhurst IL
Syed R. Hasan - Palatine IL
Donald W. Noren - Glenview IL
Craig A. Hindman - Palatine IL
Ernest S. Santi - Palatine IL

Assignee:

Illinois Tool Works Inc. - Chicago IL

International Classification:

F16B 4300

US Classification:

411531

Abstract:

A machine for fastening one or more layers of roofing material to an underlayment, and a stackable washer therefor. A chute receives a stack of such washers. A shuttle displaces a single washer to a separated position when moved in one direction, to which the shuttle is biased, releases the single washer when moved oppositely. A gate, which cooperates with camming surfaces on the respective washers, restrains the overlying washer in the stack against being displaced with the single washer and restrains the single washer from being displaced from the separated position. Various components are provided by linking a stand-up screw gun of a known type to the shuttle. The stackable washer is embossed so that each such washer and like overlying and underlying washers in a stack contact each other at three or more places, which define tangent planes intersecting planes defined by planar areas on such washers at angles more than 45. degree. but less than 90. degree. whereby such washers are spaced from each other around their entire peripheries.

US Patent:

50421425, Aug 27, 1991

Filed:

Aug 16, 1989

Appl. No.:

7/394323

Inventors:

John R. Beach - Elmhurst IL
Syed R. Hasan - Palatine IL
Donald W. Noren - Glenview IL
Craig A. Hindman - Palatine IL
Ernest S. Santi - Palatine IL

Assignee:

Illinois Tool Works Inc. - Glenview IL

International Classification:

B23P 2100

US Classification:

29787

Abstract:

A machine for fastening one or more layers of roofing material to an underlayment, and a stackable washer therefor. A chute receives a stack of such washers. A shuttle displaces a single washer to a separated position when moved in one direction, to which the shuttle is biased, and releases the single washer when moved in the opposite direction. A gate, which cooperates with camming surfaces defined upon the respective washers, restrains the overlying washer within the stack against being displaced along with the single washer and restrains the single washer from being displaced from the separated position. Various components are provided by linking a stand-up screw gun of a known type to the shuttle. The stackable washer is embossed so that each such washer and like overlying and underlying washers within a stack contact each other at three or more places, which define tangent planes intersecting planes defined by planar areas upon such washers at angles greater than 45. degree. but less than 90. degree.