| 摘要 |
1534580 Window and door frames CAPITOL PRODUCTS CORP 14 May 1976 [27 May 1975] 20077/76 Heading E1J An insulated frame comprises elongate metal frame members 40, 50 spaced apart side by side, and an insulating member 30 between the metal members, small projections 31 on the insulating member having been at least partially sheared off during mating with the metal members. The small projections 31 are located in recesses on the insulating member 30 and sheared off when the arms 45 are slid into the recesses. Alternatively the insulating member has male members (21, Fig. 2) carrying the projections and received in recesses in the metal members. The insulating member is of plastics material. |
