Abstract: An umbrella including a central shaft, a plurality of fabric support ribs extending outwardly from the central shaft, a fabric cover associated with the fabric support ribs, a plurality of rib support elements for supporting the fabric support ribs and a plurality of detachable attachment elements, each operative to detachably attach a rib support element onto a fabric support rib, whereby in response to strong winds or other forces, detachment occurs, thereby preventing breakage of the support ribs.

Abstract: An improved joint mechanism for an umbrella which has a first connecting device which includes a shaft member which has a channel through its length and is capable of sleeving onto a rib member and a saddle portion with a U-shaped configuration disposed at the middle portion of the shaft member. A second connecting device defines a connecting tube suitable for fixing a tip portion of a stretcher and a yoke portion having a supporting beam which can be rotatably received by the saddle portion of the first connecting device.

Abstract: A large umbrella includes a plurality of ribs and stretchers and a connecting piece mounted to a mediate section of each rib for connecting the rib and associated stretcher. The connecting piece is substantially U-shaped and has a base section with two ends and a lateral wall extending from each end of the base section. A protrusion projects from an inner side of each lateral wall to form a pair of aligned protrusions adjacent to the base section for securely engaging with the rib. A pair of aligned holes are formed in the lateral walls adjacent to the distal ends of the lateral walls for allowing riveting of the stretcher.

Abstract: What is described is a recombinant poxvirus, such as vaccinia virus, fowlpox virus and canarypox virus, containing foreign DNA from herpesvirus. In one embodiment, the foreign DNA is expressed in a host by the production of a herpesvirus glycoprotein. In another embodiment, the foreign DNA is expressed in a host by the production of at least two, particularly two or three, herpesvirus glycoproteins. What is also described is a vaccine containing the recombinant poxvirus for inducing an immunological response in a host animal inoculated with the vaccine. By the present invention, the barrier of maternal immunity in a newborn offspring can be overcome or avoided.

Abstract: An umbrella includes a plurality of top ribs pivotally secured to a notch formed on an upper end of a central shaft and a plurality of stretcher ribs each pivotally secured between each top rib and a runner slidably held on the central shaft, each top rib being embedded with a reinforcing core rod for strengthening the top rib in order to resist an external force acting upon an umbrella cloth secured on the top ribs.

Abstract: A collapsible shelter of the umbrella-tent type including a foldable frame and a cover of sheet material affixed to the frame. The tent frame comprises a plurality of support members and novel means of pivotally connecting the mutually respective ends of the support members to a central hub. The central hub is mounted on erecting guide means, which preferably has the form of an erecting rod or cord. A second hub is mounted on the guide means below the central hub, and a plurality of rib members are pivotally connected at mutually respective ends to the second hub, using novel connecting means similar to that used with the support members.

Abstract: An umbrella frame is described having dome ribs, each including an inner section, a telescopic middle section, and an outer section hingedly connected to the middle section for movement between a position colinear with the middle section and a position with the outer section folded over the middle section. A geats is slidable on the inner section, and a stretcher member is hinged to the main runner as well as to the geats. A second geats member is slidable on the inner section and is connected to the end of the middle dome rib section. An auxiliary runner is slidable on the stick between the main runner and the crown. A strut member is hinged to the auxiliary runner and to the stretcher member, and a control link is hinged to the stretcher member, a short distance from the hinge of the first geats, and at the other end the control link member is pivotally connected to an inner extension of the outer dome rib section.