Abstract: An automatic paraffin removal unit, including a scraper body, a tumbler, an arc spring leaf and a return torque spring, and the upper and lower commutators having a sleeve, an open spacing ring and a tower spring. In operation, the scraper is clamped on a pumping rod, while the upper, lower commutators are respectively connected to the upper, lower ends of the tubing section from the well head to the section having toe temperature lower than paraffin deposition temperature requiring paraffin removal. The scraper moves up and down following the pumping rod via unidirectional upward or downward movement, paraffin removal being performed to the inner wall of tubing and pumping rod unceasingly, and variations in direction being performed in the upper, lower commutators.

Abstract: An oral care composition having enhanced oral hygiene and lipophylic properties which comprises an orally acceptable vehicle containing a combination of an enzyme and a cyclodextrin.

Abstract: A dual component antiplaque oral composition having antimalodor properties in which a first component contains an antibacterial agent and the second component contains a proteolytic enzyme, the first and second components are simultaneously combined for application to the teeth, the first and second components being physically segregated prior to use, the components when mixed upon application to teeth providing substantially antiplaque effect with superior antimalodor properties.

Abstract: An abrasive dentifrice composition which effects enhanced antiplaque and breath freshening properties which comprises an orally acceptable vehicle containing a combination of a safe and effective amount of an antibacterial agent and at least two enzyme ingredients.

Abstract: An oral composition comprising in an orally acceptable vehicle, an effective antiplaque amount of an halogenated diphenyl ether or phenolic antibacterial compound, and an amount of an mixed anionic/zwitterionic surfactant system which is effective to increase the uptake of the antibacterial compound to dental tissue so as to enhance the therapeutic efficacy of the administered antibacterial compound.

Abstract: An automatic paraffin removal unit, comprises a scraper body (3), a tumbler(4), an arc spring leaf (2) and a return torque spring(16), and the upper, lower commutators consist of a sleeve(1), an open spacing ring(5) and a tower spring(6). In operation, the scraper is clamped on a pumping rod(9), while the upper, lower commutators are respectively connected to the upper, lower ends of the tubing section from the well head to the section having toe temperature lower than paraffin deposition temperature requiring paraffin removal, the scraper moves up and down following the pumping rod, via unidirectional upward or downward movement, paraffin removal is performed to the inner wall of tubing and pumping rod unceasingly, and variations in direction being performed in the upper, lower commutators. The apparatus has the features of a reasonable structure, simple and convenient in mounting, able to perform reliable automatic running and long service life.

Abstract: A method to suppress oral malodor and provide long lasting breath protection wherein there is applied to the oral cavity of the user an oral composition comprising an orally acceptable vehicle containing therein a flavor system comprised of a mixture of an essential oil and a coolant compound which is a menthyl ester of naturally occurring hydrocarboxylic acids having 2 to 6 carbon atoms esterified with C1-C4 alkyl groups.

Abstract: A dual component oral composition to suppress oral malodor and provide long lasting breath protection in the oral cavity which comprises a first dentifrice component having a substantially neutral pH and containing a zinc ion releasable compound and a chlorite ion releasable compound, the second dentifrice component having an acid pH, the first and second components being maintained separate from each other until dispensed and combined for application to teeth, the combined components having a pH of no greater than 7.