Abstract: An eraser assembly is provided that includes a housing, a tray, and a coupler disposed between a surface of the tray and a surface of the housing. The housing has a concave shape including an interior portion. The tray has a retaining portion disposed in the interior portion and a mounting portion disposed opposite of the retaining portion. The coupler is configured to releasably hold the tray to the housing. An eraser insert configured to be disposed in the interior portion of the housing and to be enclosed by the tray.

Abstract: A fastening device for fastening a changeable attachment with a container handling station includes a first member and a second member formed as a fitting counterpart to said first member. The attachment can be transferred into the fastened position by uniting and rotating said members relative to each other. A fixed stop disposed on the fastening device in the fastened position prevents rotating the two members relative to each other in one rotational direction, and an elastic, radially snapable section acts as a stop without application of any external force and prevents the members from rotating relative to each other in the other rotational direction. The snapable section fastens the two members relative to each other and can be pressed in radially such that it no longer acts as a stop and the attachment can be rotated from the fastened position and removed from the container handling station.

Abstract: A stationery tool has a body and a rubber holding device. The body has a holding end and a holding recess defined in the holding end. The rubber holding device is detachably or securely mounted in the holding recess for holding a rubber to adjust an extension length of the rubber relative to the body and has a clamping segment and a guiding segment. The clamping segment has multiple clamping protrusions for pressing against the rubber. The guiding segment extends outwardly and makes an opening of the rubber holding device have a distance from the clamping segment. Accordingly, the stationery tool has capabilities of adjusting an extension length of the rubber and conveniently replacing a used rubber.

Abstract: A stationery tool has a body and a rubber holding device. The body has a holding end and a holding recess defined in the holding end. The rubber holding device is detachably or securely mounted in the holding recess for holding a rubber to adjust an extension length of the rubber relative to the body and has a clamping segment and a guiding segment. The clamping segment has multiple clamping protrusions for pressing against the rubber. The guiding segment extends outwardly and makes an opening of the rubber holding device have a distance from the clamping segment. Accordingly, the stationery tool has capabilities of adjusting an extension length of the rubber and conveniently replacing a used rubber.

Abstract: An eraser dispenser is provided which can store in a dispenser body an eraser longer than the overall length of the dispenser body. The eraser dispenser enables the eraser to be used without replacement with a new one for a long period of time. The eraser dispenser includes: a dispenser body which is enclosed by an outer circumferential wall having a distal opening and has a storing chamber capable of storing therein an eraser that is longer than the overall length of the dispenser body; and a cover which covers the dispenser body. The eraser dispenser further includes; an external operation member which partially projects from the outer circumferential wall and is operated from the outside of the dispenser body; a driving roller which is operated by the external operating member; a receiving member which is disposed opposite to the driving roller with the eraser held therebetween; and a stopper which prevents a rotary button as the external operation member from undergoing reverse turn.

Abstract: An eraser mover for use with a power eraser comprising mechanical means for sliding the eraser out of its holder by inserting prongs into the eraser and moving the prongs outwardly.

Abstract: A knock-out type mechanical pencil has a supporting rod mounted with an eraser at its rear end and axially slidably engaged within the interior of a cylindrical knock-button. A tubularly cylindrical weight is axially slidably engaged around the supporting rod. A cylindrical magnet is axially magnetized and secured to the inner peripheral surface of the knock-button. An annularly inwardly raised guide portion is formed on the inner peripheral surface of the knock-button for guiding the weight to the axial line of the knock-button when the weight is axially slidably dropped downwardly toward the writing tip of the pencil. To protrude and fix an eraser from the rear end of the tubular cylindrical body, the rear end of the pencil is tilted downward. To automatically contain or retract the eraser in the knock-button, the writing tip of the pencil is directed downwardly in writing state.

Abstract: An eraser device comprising a thin flat rubberlike erasing material and a stiff plastic holder structure therefor, the latter having a trough shape holder bottom locking together by snap clips with an inverted trough shape front cover and an inverted trough shape rear cover so as to form a clamping front end and a rear storage space. The thin flat eraser is clamped firmly at the front end so as to eliminate requirement of exerting extra force or paying special attention to the holder in order to prevent the eraser from slipping backward in the erasing operation. Additionally, the holder structure provides a smooth surface for comfortably grasping the eraser device in the hand. As the eraser front end is worn in use, it can be easily adjusted to maintain the proper protrusion by releasing the clamp action of the front cover. Refilling of long flexible thin eraser can be easily accomplished by removal of both front and rear covers.