Abstract: The cut gem, in particular the diamond, has a predetermined number of cut facets in the crown (10) and in the pavilion about a central axis of geometric symmetry. The facets (25 to 27) are disposed about said axis of symmetry in a hexagonal arrangement. This geometric axis of symmetry preferably corresponds to one of the ternary crystallographic axes of the diamond. The girdle (12) separating the crown from the pavilion has a contour (20) of lobed shape with six rounded projecting portions and six rounded hollow portions (21, 22). The gem thus cut permits obtaining the original optical effects of brilliance and dispersion of light.
Abstract: A writing instrument with elongated housing and a writing tip has an inscription or receiving area formed by an insertion panel. The insertion panel is set in a recess in the housing and operatively connected to a cover panel by a hinge extending with its pivot axis in the direction of elongation of the housing. In its closed position, the covering panel covers the insertion panel and is set with its outer surface essentially in alignment with the adjacent housing portions. When the covering panel is open, the inscription or receiving area is accessible.
Abstract: A fountain pen is provided with a tubular barrel, and ink guide with a nib on its front end and a cartridge on its rear end. The ink guide is mounted so that it is substantially linearly movable not only between a writing position in which the tip of the nib projects out of the front end of the barrel, and a storage position in which the nib is retracted within the barrel, but also a replacement position in which the rear end of the cartridge projects out of the open rear end of the barrel so that the cartridge can be readily grasped for replacement. A cover cap may be provided with an axially extending support pin having a free end which engages a pivotal closure cap to prevent it from opening the rear end of the barrel as a result of pressure exerted by the ink cartridge. The free end of the support pin also engages the ink guide, when the pen is in the writing position and the cover cap surrounds the front end of the barrel, to insure that the tip of the nib is spaced from all portions of the cover cap.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
February 13, 2001
Assignee:
Montblanc-Simplo GmbH
Inventors:
Eckhard Fuchs, Rüdiger Weiss, Thomas Klössing, Dietmar Podszuweit, Heino Strehle
Abstract: An ink feed for a fountain pen has a main body provided with radial ink holding chambers, the rear end of which can be connected with the ink reservoir of a fountain pen, and which has on the nib support side an axially running groove to receive an inset, between which inset and the base of the groove, an air channel and at least one capillary ink feed channel are formed. The front end of the ink feed channel opens into an ink reserve space constructed between the main body and the inset, which space is connected via a capillary ink exit slit between the front end region of the inset and the main body, with the nib support surface. The ink exit slit extends from the middle of the groove to its two sides and at least with partial sections to the rear.
Abstract: An ink supply system for writing instruments which operate with liquid ink. The writing instrument has a large-volume ink reservoir which communicates via a recharge valve with a small-volume ink reservoir which is adjacent to the writing element. The transmission of ink from the large-volume ink reservoir to the secondary reservoir is controlled by a sensor as a function of the quantity of ink which is present in the secondary ink reservoir. In order to simplify the recharging of the ink, and to be able to operate with the least possible electrical energy, the present invention utilizes as a recharge valve a tube pump which is rotatably driven by an electric motor and also can generate the pressure necessary to convey the ink to the secondary ink reservoir.
Abstract: An ink supply system for writing instruments which operate with liquid ink. The writing instrument has a large-volume ink reservoir which communicates via a recharge valve with a small-volume ink reservoir which is adjacent to the writing element. The transmission of ink from the large-volume ink reservoir to the secondary reservoir is controlled by a sensor as a function of the quantity of ink which is present in the secondary ink reservoir. In order to simplify the recharging of the ink, and to be able to operate with the least possible electrical energy, the present invention utilizes as a recharge valve a tube pump which is rotatably driven by an electric motor and also generate the pressure necessary to convey the ink to the secondary ink reservoir.
Abstract: An ink supply system for writing instruments which operate with liquid ink or writing fluid. In order to make uniform the supply of ink or writing fluid independent of environmental influences, and to make possible a longer writing time with one filling, it is proposed to first store the writing fluid in a primary, permanently compressible, non-capillary and large-volume supply chamber. From this primary supply chamber, a small-volume, capillary secondary supply chamber, which communicates with the writing element, is supplied via an auxiliary charging valve which is controllable as a function of need for ink or writing fluid. The filling of the secondary supply chamber can be detected with a sensor, and the auxiliary charging valve can be controlled.
Abstract: To prevent transport of deleterious oxygen and moisture to liquid electrolyte in an aluminum electroplating vessel, workpieces move towards the vessel through an antechamber containing inert gas under pressure and comprising a plenum chamber opening downwardly into a lock chamber containing aprotic liquid. They move down into the liquid, then up out of it, into and through an inverted-U-shaped passageway containing higher pressure inert gas and which communicates with the lock chamber below the surface of the liquid therein and communicates with the electrolysis vessel above the surface of the electrolyte. At each connection between parts, where atmospheric oxygen might move towards the electrolyte, there are double mechanical seals defining a substantially annular chamber filled with aprotic liquid that forms a gas barrier, and such liquid is, where possible, shielded by inert gas.