Pedro L Silva

US Patent:

20100319171, Dec 23, 2010

Filed:

Jun 18, 2009

Appl. No.:

12/456520

Inventors:

Piyong Yu - Chicago IL, US
Pedro Franco Silva - Washington DC, US

International Classification:

D06C 3/00
D06C 3/08

US Classification:

26 71

Abstract:

A mechanical device was invented for prestressing of carbon fiber reinforced polymer (CFRP) sheets. Significant features of this device are that the CFRP sheets are directly anchored to the mechanical device itself, the prestressing forces are applied with a manual torque wrench without the need for power operated hydraulic jacks and the prestressing transfer is accomplished under slow strain rates. Experimental investigation clearly indicates that the device was efficient in applying prestressing to the CFRP sheets and prestress losses during stressing were maintained at a minimum.

US Patent:

55245617, Jun 11, 1996

Filed:

Sep 23, 1994

Appl. No.:

8/311784

Inventors:

Peter K. Schueler - Hawthorne NJ
Pedro Silva - Carteret NJ

Assignee:

Clinton Industries, Inc. - Carlstadt NJ

International Classification:

D05B 306

US Classification:

112 67

Abstract:

A buttonhole sewing machine includes a housing. A bed plate is slidably mounted on the housing and moves between a home position and a sew position. A needle mechanism is mounted on the housing and is movable in a reciprocal manner with respect to the housing, A first motor is mounted on the housing. The first motor directly drives the bed plate between the home position and the sew position. A second motor is mounted on the housing. The second motor directly drives the needle mechanism.

US Patent:

58293710, Nov 3, 1998

Filed:

Jun 11, 1997

Appl. No.:

8/873076

Inventors:

Peter K. Schueler - Hawthorne NJ
Pedro Silva - Carteret NJ

Assignee:

Clinton Industries, Inc. - Carlstadt NJ

International Classification:

D05B 306

US Classification:

112 67

Abstract:

A buttonhole or eyelet sewing machine includes a housing. A machine head is slidably mounted on the housing and moves between a home position and a sew position. A bed plate is slidably mounted on the housing. A needle mechanism is mounted on the machine head and is movable in a reciprocal manner with respect to the housing. A first motor is mounted on the housing. The first motor directly drives the machine head between the home position and the sew position. A second motor is mounted on the housing. The second motor directly drives the needle mechanism. The second motor directly drives the bed plate to permit stitching about a buttonhole or eyelet.