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1.发明授权
公开(公告)号：US3745203A
公开(公告)日：1973-07-10
申请号：US3745203D
申请日：1971-08-19
发明人： HARPER R
CPC分类号： C08J9/12 , B29B7/7428 , C08J9/143 , C08J2375/00 , C08J2375/04 , Y10S264/05 , Y10S264/14 , Y10S264/83
摘要： A PROCESS FOR THE PRODUCTION OF UNIFORM POLYURETHANE MOLDINGS SUBSTANTIALLY FREE OF SURFACE VOIDS, BY (1) MIXING A POLYISOCYANATE, A POLYOL, AND A BLOWING AGENT; (2) PRESSING THE RESULTANT LIQUID NONEXPANDED MIXTURE INTO A CLOSED MOLD; (3) ALLOWING THE LIQUID TO EXPAND AND FILL THE MOLD AS THE POLYURETHANE IS FORMED; AND (4) CURING AND REMOVING THE RESULTANT MOLDED ARTICLE; EMPLOYING AS A BLOWING AGENT A MIXTURE OF TWO VOLATILE BLOWING AGENTS, I.E., DICHLORODIFLUOROMETHANE AND TRICHLOROMONOFLUOROMETHANE, WHICH MIXTURE WHEN INCORPO-
RATED INTO THE NONEXPANDED LIQUID MOLDING MIXTURE EXHIBITS A VAPOR PRESSURE OF NOT MORE THAN ONE ATMOSPHERE AT 110*F. THE PROCESS IS USEFUL FOR PRODUCTION OF MOLDED ARTICLES FOR STRUCTURAL PURPOSES, FURNITURE, ETC.-
公开(公告)号：US3609816A
公开(公告)日：1971-10-05
申请号：US3609816D
申请日：1970-02-20
发明人： MCDONALD DAVID I
CPC分类号： B29C45/683
摘要： A MECHANISM FOR BRINGING A MOVABLE PLATEN OF MOLDING MACHINE INTO COOPERATIVE ENGAGEMENT WITH A STATIONARY PLATEN AND IN WHICH A PAIR OF LINKS IS PROVIDED, ONE OF WHICH IS ATTACHED TO A SUBSTANTIALLY STATIONARY STRUCTURE AND THE OTHER OF WHICH IS ATTACHED TO THE MOVABLE PLATEN. THE LINKS ARE JOINED AT ONE END THEREOF AND AT THEIR OPPOSITE ENDS ONE LINK IS CONNECTED TO A CYLINDER AND THE OTHER LINK IS CONNECTED TO A PISTON ROD SO THAT UPON APPLICATION OF HYDRAULIC PRESSURE TO THE CYLINDER, THE PISTON IS CAUSED TO MOVE, THEREBY MOVING THE MOVABLE PLATEN TOWARD OR AWAY FROM THE STATIONARY PLATEN. THE PISTON AND CYLINDER ARE SO DISPOSED THAT THE FORCE THEREBY PROVIDED IS IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE PATH OF TRAVEL OF THE MOVABLE PLATEN. ADDITIONALLY, ONE OF THE LINKS CAN BE PIVOTALLY CONNECTED TO THE END OF A LARGE CLAMPING PISTON WHICH SERVES TO INCREASE THE FORCE BETWEEN THE COOPERATING ELEMENTS ONCE THE LINK SYSTEM HAS REACHED THE FULL EXTENT OF ITS TRAVEL.
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公开(公告)号：US3559512A
公开(公告)日：1971-02-02
申请号：US3559512D
申请日：1969-06-27
发明人： AGGARWAL TRILOK C
CPC分类号： F16F7/10 , B23B29/022 , Y10T408/76
摘要： A SERIS BIBRATION DAMPER UNIT FOR A VARIABLE NATURAL FREQUENCY MACHINE TOOL MEMBER WHEREIN A SERIES OR SEVERAL TANDEM SETS OF INDIVIDUAL DAMPERS, EACH COMPRISING A DAMPING MASS EFFECTIVELY SUPPORTED BY TWO VISCOELASTIC ABSORBER ELEMENTS, ARE ARRANGED SO THAT THERE IS EFFECTIVE DAMPING OF SAID MEMBER OVER THE USABLE FREQUENCY RANGE OF SAID VARIABLE NUTURAL FREQUENCY MEMBER.
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公开(公告)号：US3510915A
公开(公告)日：1970-05-12
申请号：US3510915D
申请日：1968-04-18
发明人： JOHANSSON OSKAR R
CPC分类号： B29C45/5008
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公开(公告)号：US3492717A
公开(公告)日：1970-02-03
申请号：US3492717D
申请日：1967-12-15
发明人： SEIDEL WILLIAM B , RUSSELL JOHN X
CPC分类号： B23Q3/1554 , Y10T483/1762
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公开(公告)号：US3483347A
公开(公告)日：1969-12-09
申请号：US3483347D
申请日：1966-12-05
发明人： LOSEY JERRY E
CPC分类号： B23H1/024
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公开(公告)号：US3465630A
公开(公告)日：1969-09-09
申请号：US3465630D
申请日：1967-05-08
发明人： BURNS EDWARD C
CPC分类号： A41H43/00 , B26D7/20 , B26F1/38 , B26F1/382 , Y10S83/937 , Y10T83/6582 , Y10T83/6593 , Y10T83/6595
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公开(公告)号：US3430851A
公开(公告)日：1969-03-04
申请号：US3430851D
申请日：1967-12-26
发明人： ABT RONALD C
CPC分类号： B04B13/00
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公开(公告)号：US3430473A
公开(公告)日：1969-03-04
申请号：US3430473D
申请日：1967-08-21
发明人： EDWARDS BOBBIE L
CPC分类号： B21D22/12
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公开(公告)号：US3427239A
公开(公告)日：1969-02-11
申请号：US3427239D
申请日：1966-04-11
发明人： ABT RONALD C , ADAMS ROBERT R
CPC分类号： B23H3/04
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