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61. 发明专利

CA2088242A1 METHOD AND APPARATUS FOR INSTALLING A POST IN A TOOTH HAVING AN EXISTING ENDODONTIC OBTURATOR THEREIN 未知
公开(公告)号：CA2088242A1
公开(公告)日：1992-03-01
申请号：CA2088242
申请日：1991-08-27
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： A61C3/02 , A61C13/30 , A61C8/02
摘要： 2088242 9203103 PCTABS00010 Method of installing a post (54) in a tooth (10) having a metal obturator (22) therein including the steps of drilling a borehole in the tooth with a tubular burr (32) having a tubular opening (42) therein of internal diameter at least slightly greater than the diameter of the obturator to thereby provide a borehole of selected internal diameter having the metal obturator remaining essentially therein, the obturator serving to assist in the guiding of the burr and inserting a tubular post into the borehole, the post receiving the metal obturator therein, the post extending partially above the top of the tooth to provide means for attachment of a crown or the like.

62. 发明专利

CA2007220A1 APPLIANCE FOR USE IN APPLYING FILLER MATERIAL TO AN ENDODONTICALLY PREPARED ROOT CANAL 未知
公开(公告)号：CA2007220A1
公开(公告)日：1991-07-05
申请号：CA2007220
申请日：1990-01-05
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： A61C5/50 , A61C5/04

63. 发明专利

AT484256T 未知
公开(公告)号：AT484256T
公开(公告)日：2010-10-15
申请号：AT06254101
申请日：2006-08-04
申请人： JOHNSON WILLIAM B
发明人： JAUNBERZINS ANDRIS
IPC分类号： A61C5/02
摘要： An endodontic reamer/file for cleaning/shaping a tooth root canal having an elongated shank with a proximal end portion (12), a distal end (14) and a tapered working portion (16) having a longitudinal axis, the external surface of the shank working portion (16) being defined by a plurality of at least two equally spaced apart continuous concaved helical flutes (20) providing concave flute surfaces (22), the flute surfaces having therebetween an equal number of spiraled, spaced apart flanges (24), each flange having in a plane perpendicular the longitudinal axis a single outer end surface having opposed first and second ends, each first end forming an active spiraled leading scraping/cutting edge and each second end forming a passive spiraled edge.

64. 发明专利

CA2007220C AN IMPROVED APPLIANCE FOR USE IN APPLYING FILLER MATERIAL TO AN ENDODONTICALLY PREPARED ROOT CANAL 未知
公开(公告)号：CA2007220C
公开(公告)日：1999-01-12
申请号：CA2007220
申请日：1990-01-05
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： A61C5/50 , A61C5/04
摘要： An improved appliance for use in applying filler material, such as gutta-percha or the like, to an endodontically prepared root canal of a tooth in the form of an elongated shaft of material having high biological tolerance, the shaft having a handle portion at the proximal end portion, the shaft distal end portion having a surface configuration adaptable to retain filler material formed thereon and being positionable in a root canal, the shaft distal and proximal portion being severable from each other whereby the distal portion and filler material therein remain in the root canal. In the preferred arrangement the shaft distal portion surface is defined by a spiral groove.

65. 发明专利

ES2060006T3 未知
公开(公告)号：ES2060006T3
公开(公告)日：1994-11-16
申请号：ES90300223
申请日：1990-01-09
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： A61C5/04
摘要： An improved appliance for use in applying filler material, such as gutta-percha or the like, to an endodontically prepared root canal of a tooth in the form of an elongated shaft (12) of material having high biological tolerance, the shaft having a handle portion (26) at the proximal end portion (40), the shaft distal end portion (42) having a surface configuration adaptable to retain filler material formed thereon and being positionable in a root canal, the shaft distal and proximal portion being severable from each other whereby the distal portion and filler material therein remain in the root canal. In the preferred arrangement the shaft distal portion surface is defined by a spiral groove (44).

67. 发明专利

CA2119603A1 METHOD OF APPLYING GUTTA PERCHA TO A CARRIER 未知
公开(公告)号：CA2119603A1
公开(公告)日：1994-10-15
申请号：CA2119603
申请日：1994-03-22
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： A61C5/04 , A61C13/00
摘要： IMPROVED METHOD OF APPLYING GUTTA PERCHA TO A CARRIER The present invention is an improved method and device used in applying gutta percha to a carrier which will later be used in filling and sealing an interior of a tooth after a root canal has bean performed on the tooth. The method consists of inserting a guttapercha filled cannula into the barrel cavity of a syringe-type device, heating the cannula in order to increase the plasticity of the gutta percha, inserting a carrier into the cannula at the dispensing end of the syringe-type device and pushing a plunger of the syringe-type device downward in order to push the carrier, which is now coated with the gutta percha previously contained in the cannula, out of the dispensing end of the cannula. The gutta percha coated carrier is then ready for use in the root canal. An alternate embodiment of the syringe-type device employs a modified plunger to accommodate an alternate cannula which is provided with its own dispensing cannula plunger.

69. 发明专利

CA1096707A FLUIDIZED-BED COMPACT BOILER AND METHOD OF OPERATION 未知
公开(公告)号：CA1096707A
公开(公告)日：1981-03-03
申请号：CA295904
申请日：1978-01-30
申请人： JOHNSON WILLIAM B
发明人： JOHNSON WILLIAM B
IPC分类号： F22B1/02 , C10G9/20 , F22B21/30 , F22B31/00 , F23C10/00 , F23C10/02 , F23C10/04 , F27B15/00
摘要： A method and associated apparatus for carrying out fluidized bed combustion and transferring heat produced thereby to a boiler includes providing a fluidized bed of particulate matter and introducing fuel particles thereinto, causing a portion of the fluidized bed constituents to flow upwardly through a heat exchanger which is essentially free of any obstructions to said flow, and reintroducing the portion of fluidized bed constituents which flow through the heat exchanger, back into the fluidized bed. As preferably embodied, the portion of fluidized bed constituents flows into an inlet at the bottom of the heat exchanger from a quiescent zone adjacent the combustion bed and a gas having a combustible component is introduced into the heat exchanger. Advantageously, additional fuel particles are also introduced into the heat exchanger to flow upwardly therethrough. Also advantageously, the cross-sectional area of the flow path provided in the heat exchanger is proportioned to provide an essentially uniform temperature profile across the flowing particles at any position in the heat exchanger.

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