公开(公告)号：US3669821A

公开(公告)日：1972-06-13

申请号：US3669821D

申请日：1968-08-02

申请人： ROBERTSON CO H H

发明人： SHARP MERLE F

IPC分类号： B29C53/24 ,  B29D24/00 ,  B29D99/00 ,  B32B1/00

CPC分类号： B32B27/08 ,  B29C53/24 ,  B29D24/002 ,  B29D99/0003 ,  B29K2105/06 ,  B32B3/28 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2305/08 ,  Y10T156/1025 ,  Y10T428/24711 ,  Y10T428/24744 ,  Y10T428/24777

摘要： Fiber-reinforced plastic structural members are fabricated with at least one lengthwise cell. The members are made from two component elements, each having contigouos surfaces in the assembly which surfaces become coalesced in the integral structural member. One of the components is formed, partially gelled, and before complete gelation, is engaged with the other component which is at that time ungelled. With the two components thus assembled, the overall member is cured to produce a unitary structural member having at least one lengthwise cell. The process is especially useful in producing components for operating louvers.

公开(公告)号：US3557497A

公开(公告)日：1971-01-26

申请号：US3557497D

申请日：1968-09-11

申请人： ROBERTSON CO H H

发明人： SCHAFER KENNETH A ,  SHARP MERLE F

IPC分类号： F24F7/02 ,  E04D13/035 ,  E05F15/20

CPC分类号： F24F7/02 ,  E05Y2900/154 ,  F24F11/34

摘要： A VENTING UNIT CAPABLE OF QUICKLY RELIEVING HEAT AND SMOKE DUE TO FIRES AND PRESSURES DUE TO EXPLOSIONS ORIGINATING IN THE INTERIOR OF A BUILDING. THE VENTING UNIT HAS AT LEAST ONE COVER MEMBER RELEASEABLY RETAINED IN A NORMALLY CLOSED POSITION. FLUID ACTUATED MOTOR MEANS INCLUDING A VARIABLE VOLUME CHAMBER FORCIBLY URGES THE COVER MEMBER TOWARD AN OPEN POSITION. THE COVER MEMBER IS NORMALLY DISCONNECTED FROM THE MOTOR MEANS AND IS FREELY PIVOTAL TOWARD ITS OPEN POSITION ON BEING RELEASED. MOTOR ENERGIZING MEANS, IN THE FORM OF A REPLACEABLE CARTRIDGE CONTAINING PRESSURIZED WORKING FLUIDS, ENERGIZES THE MOTOR MEANS IN RESPONSE TO A SELECTED ELEVATED TEMPERATURE WITHIN THE BUILDING.