David M Sharp

US Patent:

60864494, Jul 11, 2000

Filed:

Jan 14, 1999

Appl. No.:

9/231701

Inventors:

David F. Sharp - East Windsor NJ

International Classification:

A63H 3300

US Classification:

446486

Abstract:

A spring biased projectable latch mechanism having a triggerable release mechanism at the end of said latch which is projected furthest into a latch receptacle during fastener engagement. A latch housing part of an object being fastened, said housing comprising said latch, said spring bias means, at least one receptacle, and a trigger chamber area. The housing and latch mechanism are constructed such that the spring biased release of the latch of one object actuates the trigger release mechanism of each adjacent object, resulting in a cascading release of a complex structure of interconnected objects in response to a single latch release trigger event.

US Patent:

20180291945, Oct 11, 2018

Filed:

Apr 5, 2018

Appl. No.:

15/946142

Inventors:

- Langhorne PA, US
David L. Sharp - Warrington PA, US

Assignee:

TurnaSure LLC - Langhorne PA

International Classification:

F16B 31/02

Abstract:

A direct tension indicating (DTI) washer. The DTI washer has an annular body and one or more U-shaped horseshoe protuberances. The annular body includes a central hole, a circumference, an outer edge, a first face, and a second face opposite from the first face. The horseshoe protuberances each have a height, an apex closest to the central hole, and an opening directed toward the outer edge. The horseshoe protuberances are integral with the annular body and struck and partially sheared from the annular body to project from the first face of the annular body and leave one or more corresponding indentations in the second face of the annular body. The horseshoe protuberances may be radially offset from their corresponding indentations. An indicating material is initially encapsulated and contained within the area on the first face defined by each of the horseshoe protuberances.

US Patent:

20170130758, May 11, 2017

Filed:

Nov 11, 2015

Appl. No.:

14/938081

Inventors:

- Langhorne PA, US
David L. Sharp - Warrington PA, US

Assignee:

TurnaSure LLC - Langhorne PA

International Classification:

F16B 31/02
F16B 5/02

Abstract:

A direct tension indicating washer including an annular body with a central hole, one or more protuberances, and one or more indentations. The one or more protuberances are integral with the annular body, and struck and partially sheared from the annular body to project from a first face of the annular body and leave the one or more corresponding indentations in a second face of the annular body opposite the first face. The one or more indentations are offset from the one or more protuberances and located farther from the central hole of the annular body than the one or more protuberances. By offsetting the protuberances and indentations, the washer is strengthened and is more suitable for use in joint assemblies having enlarged or oversized holes.