Braun Gmbh

Metallgesellschaft Aktiengesellschaft

The Gillette Company

Joachim Wilhelm

Manfred Klawuhn

Gerhard Finger

Petra Ansari

Joachim Klimeck

Conrad Berghammer

Björn Kling

Duy Phong Vu

Andreas Birk

Cornelia Seifert

Rainer Reimert

Manfred Kriebel

Bernd Trebitz

Georg Penk

Carolin Schlueter

Günter Helbig

Andrea Birk

Ulf Jauernik

A method and apparatus for assessing the penetration of tooth cleaning elements into a simulated gingival pocket. In one embodiment, the apparatus includes a tooth shaped member, wherein at least a portion of the tooth is transparent to light; a gum member positioned on a first side of the tooth shaped member; a simulated gingival pocket created between the gum member and the tooth shaped member; and an imaging device configured to obtain a plurality of images related to the gingival pocket, and bristle penetration into the gingival pocket.

Method and apparatus for assessing the penetration of tooth cleaning elements in the gingival pocket

A method and apparatus for assessing the abrasiveness of a brush is provided. The method includes providing a destructible article, providing a brush, such as for example a toothbrush, brushing the destructible article with the toothbrush, examining the destructible article after brushing with the toothbrush and determining the abrasive quality of the toothbrush as a function of the appearance of the destructible article. The apparatus for determining the abrasiveness of a toothbrush includes a holder for retaining a toothbrush having a head and a neck, a support for holding a destructible article, a mechanism for moving the head of the toothbrush against the destructible article in a brushing fashion, and a biasing member for applying a selected brushing force between the head of the toothbrush and the destructible article.

Method and apparatus for assessing the gentleness of brushes

A handheld toothbrush with a brush head having a forward free end and a rearward portion. Provided at the forward free end of the brush head is at least one bristle tuft of a first set. Adjoining the first set in rearward direction is a second set of tufts comprised of several bristle tufts arranged serially on a ring and extending in the circumferential direction of the ring at an angle of inclination relative to the surface of the brush head. A third set of tufts adjoins the second set of bristle tufts in the direction towards the rearward portion. The tufts of the third set are inclined in the circumferential direction in opposition to the direction of the bristle tufts of the second set. As a result, these tufts are capable of penetrating optimally between the user's teeth, hence ensuring a better cleaning result.

Handheld toothbrush

Tufting for a toothbrush head

Manual toothbrush

A natural gas, which in addition to methane contains 2 to 4 carbon atoms per molecule and H.sub.2 S, is treated to remove the H.sub.2 S and the hydrocarbons in part. The natural gas under a pressure of at least 5 bars is indirectly cooled in a heat exchange zone to temperatures from -30.degree. to 100.degree. C. The condensate is removed from the cooled natural gas and is pressure-relieved and is then passed as a coolant through the heat exchange zone. Scrubbing liquor is cooled in the heat exchange zone to temperatures from -30.degree. to -80.degree. C. and is contacted in a scrubbing zone with the natural gas from which the condensate has been removed. The laden scrubbing liquor which has been withdrawn from the scrubbing zone is passed through the heat exchange zone. The natural gas which has been purified in the scrubbing zone is pressure-relieved and is also passed through the heat exchange zone.

Process for H2S and HC removal from natural gas

In a reactor, granular feedstock having particle sizes in the range from about 0.5 to 15 mm is subjected in a moving bed to a countercurrent extraction at a temperature in the range from 20.degree. to 150.degree. C. and under a pressure in the range from 50 to 400 bars by a continuously supplied solvent which is in a liquid or supercritical state. A mixture of valuable substances and solvent is withdrawn from the upper portion of the reactor. The solvent is separated from the valuable substances by a pressure relief and/or temperature rise and is recycled to the reactor. The extraction residue is withdrawn from the lower end of the reactor. Respective locks are used to charge the feedstock into the reactor and to discharge the extraction residue from the reactor. Solvent and an entrainer are supplied to the reactor at different locations. Outlet ducts having a length of 0.1 to 1 m are preferably used to deliver the feedstock onto a moving bed in the reactor so that a free space is provided over the bed.

Apparatus for extracting valuable substances from a granular feedstock

A method of filling a container continually under superatmospheric pressure with flowable granular solids and removing the solids from the container utilizing entrance and discharge locks provided for liquid filling of the locks, gas-pressure equalization between the locks and liquid transfer from the entrance to the discharge lock. A liquid/solid separator is provided for the outflow from the discharge lock and the recovered liquid is stored.

Process of filling and emptying a constantly pressurized container

Growing community of inventors

Frankfurt-am-Main, Germany

Joachim Wilhelm