Carl S Bistrack

US Patent:

D3960579, Jul 14, 1998

Filed:

May 1, 1997

Appl. No.:

D/070162

Inventors:

Carl Bistrack - Philadelphia PA

International Classification:

1906

US Classification:

D19 50

US Patent:

56264305, May 6, 1997

Filed:

May 3, 1994

Appl. No.:

8/237552

Inventors:

Carl Bistrack - Feasterville PA

International Classification:

B43K 2300

US Classification:

401 6

Abstract:

A held writing instrument holder for persons with or without physical disabilities. A central bore with several flat slits enables insertion of instruments of varying shapes. One version has an hour glass-shaped body with a truncated periphery forming a gripping surface with a curved concave surface portion enabling a variety of grips to accommodate the user.

US Patent:

60363851, Mar 14, 2000

Filed:

Apr 30, 1997

Appl. No.:

8/848841

Inventors:

Carl Bistrack - Philadelphia PA

International Classification:

A46B 502

US Classification:

401 6

Abstract:

An instrument holder, which may be separate from or integral with the instrument for persons with or without physical disabilities. A central bore enables insertion of instruments of varying shapes. Gripping surfaces include a compound bevel downward and with a decided right or left hand slope. Elements from a top palm rest to the lower planar surface are volute, forming a right or left hand spiral. At the rear, the palm rest curves aft and under terminating in the bevelled vertical detente. The hand specific side forms a concave surface sufficient to accommodate fingers, joints, knuckles, or hand webbing between finger joints, flaring outward joining the lower planar surface. From the upper rear bevel detente, the back forms a slightly convex surface connecting with the bottom. The body and instrument path is reversible exposing the larger circumference area of the palm rest along with other control surfaces. One version having an hour glass-shaped body with a truncated periphery forming a gripping surface with a curved concave surface portion enable the user to grip the device in any one of a variety of different ways.

US Patent:

51802392, Jan 19, 1993

Filed:

Feb 7, 1991

Appl. No.:

7/652067

Inventors:

Carl Bistrack - King of Prussia PA

International Classification:

B43K 2300

US Classification:

401 6

Abstract:

A hand held adaptable pressure writing instrument holder for those persons with physical writing disabilities. The one piece unit is formed of a resilient material and contains a central core instrument path consisting of a circular bore hole with several flat slits enabling the insertion of a variety of instruments and adaptation to varying shapes. The body consists of a palm rest of oval egg shape which curves forward and under terminating in a perpendicular planar surface projection of sufficient size to allow for finger placement on this upper shelf. A vertical gripping surface connects the upper shelf to another lower perpendicular planar surface in parallel with the first. The planar surfaces include a compound bevel downward and with a decided right or left hand slope. The elements from the top palm rest to the lower planar surface are volute in nature forming a right or left-hand spiral. At the rear of the device, the palm rest curves aft and under terminating in the beveled vertical detent.