Donald Marshall Rosenthal

US Patent:

59576022, Sep 28, 1999

Filed:

Sep 3, 1997

Appl. No.:

8/929127

Inventors:

Donald M.. Rosenthal - Claremont CA

International Classification:

B43K 2906

US Classification:

401 51

Abstract:

Disclosed is a wax pencil holding device formed from a main body. The main body is formed from first and second tubular portions. A thin wax pencil is adapted to be removably received within the first tubular portion of the main body. The wax pencil is dispensed and retracted via a sliding plunger. The wax pencil further includes a pencil sharpener with a frusto-conical inset portion. The pencil sharpener is removably coupled to the first end of the second tubular portion. Further included is a shaving container for storing the shavings of the wax pencil. The shaving contain is adapted to be removably coupled to the second end of the pencil sharpener.

US Patent:

57227829, Mar 3, 1998

Filed:

Aug 19, 1996

Appl. No.:

8/729632

Inventors:

Donald M. Rosenthal - Claremont CA

International Classification:

B43K 2108
B43K 2106

US Classification:

401 75

Abstract:

A wax pencil holding device including an intermediate hollow cylinder with an inner surface being threaded. Further provided is a top cap having an aperture centrally formed therein. An interior writing utensil holder tube is coaxially situated within the intermediate cylinder such that a top end of the tube communicates with the aperture of the top cap. The tube has at least one slit longitudinally formed therein, whereby a writing utensil may be situated within the tube and extended from the aperture of the top cap. Also included is a chuck situated within the tube. The chuck is adapted to slide vertically therein. As such, the writing utensil abuts the chuck when situated within the holder tube. Finally, an actuator disk is situated within the intermediate cylinder having a top face, a bottom face, and a threaded outer periphery for threadedly engaging the threaded inner surface of the intermediate cylinder. The actuator disk is coupled to the chuck through the slits of the holder tube, thereby effecting rotation of the actuator disk and dispensing of the writing utensil upon the rotation of the intermediate cylinder.

US Patent:

55517870, Sep 3, 1996

Filed:

Aug 7, 1995

Appl. No.:

8/511800

Inventors:

Donald M. Rosenthal - Claremont CA

International Classification:

B43K 2906
B43K 2108

US Classification:

401 50

Abstract:

A device for supporting a wax pencil for writing. The inventive device includes a main body for receiving a wax pencil therewithin. A knob is rotatably mounted to an end of the main body and supports a threaded rod projecting thereinto. A plunger is engaged to the threaded rod and can be advanced therefrom to bias a desired portion of the wax pencil from the main body for use in a writing procedure.

US Patent:

61234761, Sep 26, 2000

Filed:

Oct 28, 1999

Appl. No.:

9/428745

Inventors:

Donald M. Rosenthal - Rancho Cucamonga CA

International Classification:

B43K 2906

US Classification:

401 51

Abstract:

A writing implement which employs a incremental advancement mechanism and a detachable sharpener. The sharpener, in turn, carries a detachable shavings container. This writing implement finds particular application in conjunction with crayons. The various components of the present invention, and the manner in which they interrelate, will be described more fully hereinafter.