Abstract: A sealing system comprises a semi-flexible longitudinal strip (10) profile and a sealing material both adapted to maintain a sealed joint between typically relatively vertical and horizontal surfaces. The strip profile (10) comprises a first upper limb (11) having an upper limb upper boundary (12) and an upper limb lower boundary (13) between which there extends an upper limb inner face (14) and an upper limb outer face (18). From the upper limb inner face (14) and/or upper limb boundaries (19) there extends at least one second outer limb (20) having an outer limb inner boundary attached to the upper limb (18) and an outer limb outer boundary (33) between which outer limb boundaries there extends an outer limb upper face (25) and an outer limb lower face (26). A third inner limb and/or filler material is adapted to sealingly engage uncured sealing material and to aid the isolation of the uncured sealing material from the upper limb inner face (17) and/or the outer limb lower face (20).

Abstract: A swivel chair of the type embodying a support platform or pedestal with an upright and with jointed or articulated arms carried by the upright with the chair rotatably supported at the end of one of the arms. The chair can swivel or swing through 360.degree. around the axis of the upright. If the floor on which the support platform rests is not level the axis of the upright is not vertical and the chair tends to swing by gravity to the lowermost position. The invention embodies an improvement to compensate for floor that is not level. The upright embodies a spindle and tilt ring having complementary inclined surfaces. By relative rotation of these elements the spindle can be brought into a vertical position and fixed at that position. The spindle is secured to a base member by a special nut having a convex surface cooperating with a complementary concave surface held within the base member.