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    • 78. 发明专利
    • TREATMENT OF GLASS FIBRES TO RENDER THEM COMPATIBLE WITH EPOXY RESINS
    • GB1256352A
    • 1971-12-08
    • GB5823367
    • 1967-12-21
    • FIBREGLASS LTDJOHN DINSDALE CRABTREEKENNETH HENRY GRUNDYALAN EDWARD JOHNSON
    • C03C25/26C08K9/06C08L63/00
    • 1,256,352. Polymerisation treatment on glass fibres. FIBREGLASS Ltd., J. D. CRABTREE, K. H. GRUNDY and A. E. JOHNSON. 19 Nov., 1968 [21 Dec., 1967], No. 58233/67. Heading B2E. [Also in Divisions C3 and D1 A method of treating glass fibres, to render them compatible with epoxy resins into which they are to be incorporated, comprises coating the fibres with (a) a silane which contains an addition polymerisable unsaturated group and has at least one glass reactive group (e.g. alkoxy, acyloxy or halogen) and (b) an ethylenically unsaturated monomer having an epoxy resin reactive group (e.g. -OH, -NH 2 , -CONH 2 , -NH- or -COOH) in the presence of a free radical initiator, and curing the coated fibres to effect copolymerisation of compounds (a) and (b). In a modification, component (a) instead of being unsaturated contains one or more functional groups and combines with monomer (b) by reaction of such group(s) with a complementary group present in the monomer; the functional group(s) of the silane may be selected from amino, epoxy and glycidoxy groups. Suitable silanes (a) include vinyl triethoxy silane, vinyl tris-#-methoxy ethoxy silane, γ-methacryloxypropyl trimethoxy silane, vinyl trimethoxy silane, vinyl triacetoxy silane, γ-amino propyl triethoxy silane, y-aminopropyl trimethoxy silane, N-(#-aminoethyl)-γ-aminopropyl trimethoxy silane, #-(3, 4-epoxy cyclohexyl)-ethyl trimethoxy silane and γ-glycidoxypropyl trimethoxy silane. Monomers (b) specified are acrylic acid, methacrylamide, hydroxyethyl acrylate, dimethylaminoethyl methacrylate, hydroxypropyl acrylate, N-vinyl-2-pyrrolidone, dimethyl maleate, acrylamide, hydroxyethyl methacrylate, t-butylaminoethyl methacrylate, hydroxypropyl methacrylate, methacrylic acid, 4-vinyl pyridine, allyl glycidyl ether and allyl glycolate. The free radical initiator may be a peroxide such as methyl ethyl ketone peroxide, benzoyl peroxide or cyclohexanone peroxide, or UV light or atomic radiation. If desired, the coating may also contain a film-forming component, a plasticiser or a lubricant. Components (a) and (b) may be applied to the glass fibres (e.g. in the form of a mat or cloth) in admixture or separately as solutions or emulsions, and application may be by dipping or direct to glass filaments as they are drawn from the bushing, e.g. using a roller applicator.
    • 79. 发明专利
    • CONTAINER AND SAFETY CAP
    • GB1219174A
    • 1971-01-13
    • GB1609068
    • 1968-04-03
    • TOWNS EDWARD JOHNSON
    • TOWNS EDWARD JOHNSON
    • B65D50/06
    • 1,219,174. Container closures. E. J. TOWNS. 3 April, 1968 [6 April, 1967], No. 16090/68. Heading B8T. A container 10, e.g. of plastics, is provided with an external shoulder 11 forming a ledge 13, a recessed portion 15 of the container wall lying between the shoulder 11 and a thickened peripheral lip 17. A safety cap 18 of similar material includes a side wall with an inwardly extending annular band 19, the cap 18 snap fitting on to the container 10. Cap removal means comprises a tab 22 integrally hinged to the top wall 21 of the cap 18, the tab normally fitting closely within a recess 23 in the centre of the wall 21. A deepened central portion 24 of the recess accommodates a complementally shaped island 34 with a serrated lower surface 37 which depends integrally from the tab 22, ribs being optionally provided to engage with grooves (27), Fig. 6 (not shown), on the longitudinal side walls of the deepened recess 24. The forward end of the flap 22 terminates in a thin flexible lip 36 which may be raised, e.g. by use of the fingernail, to swing the flap 22 out of the recesses 23, 24 about its hinged joint. The cap 18 then may be pulled away from the container 10 by means of the flap 22, gripping being facilitated by the serrations 37. In an alternative embodiment, Fig. 10 (not shown), the flap (22a) is provided at its outer end (36) with a frangible tab (38) secured to the cap top (18a) so that when the flap is initially raised this tab is broken along a score line (40), Fig. 11 (not shown), providing evidence of tampering.
    • 80. 发明专利
    • Improvements in or relating to teaching machines
    • GB1133363A
    • 1968-11-13
    • GB746466
    • 1966-02-21
    • WILLIAM EDWARD JOHNSONMALCOLM STUART STEELE
    • G09B3/08
    • 1,133,363. Teaching machine. W. E. JOHNSON, and M. S. STEELE. 18 May, 1967 [21 Feb., 1966], No. 7464/66. Heading G5G. A teaching device adapted to receive a stack of programmed sheets comprises two boxes, at least one having a window therein, open at their adjacent ends and interconnected by bridging means, a first box being longer than the combined length of the other box and the bridging means. The sheets are of a length substantially equal to the first box. The device also includes means for sliding the sheets from the other box into the first box. As illustrated the box 11 has a window 14 through which two questions and the answer to one can be viewed. Window 13 permits a design on the other wall of the box 10 to be viewed when the sheets are correctly positioned for commencement of the programme. Rollers 21 mounted on a stand 16 move the top sheet of a stack from the box 11 into the box 10, and this movement is assisted by rollers 21a coacting with a sheet via a slot in the box 10. Rollers 21, 21a are interconnected and the latter are of larger diameter. The student's answers may be recorded on a paper web advanced by rotation of a take up spindle (26) (Fig. 4, not shown). The web passes over a further roller which is drivingly connected with the rollers 21. The written answer is carried beneath a transparent window (28). Alternatively the answers may be recorded directly on the programme sheets. The window 10 may be positioned in box 10, and the drive of rollers 21 may include a clutch preventing reverse drive of the rollers.