Invention Grant
- Patent Title: Portable collapsible wheels
- Patent Title (中): 便携式折叠轮
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Application No.: US622668Application Date: 1984-06-20
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Publication No.: US4602823APublication Date: 1986-07-29
- Inventor: Charles A. Berg
- Applicant: Charles A. Berg
- Assignee: Berg Charles A
- Current Assignee: Berg Charles A
- Main IPC: B60B19/00
- IPC: B60B19/00 ; B60B1/02 ; B60B21/02
Abstract:
A portable collapsible wheel is provided with fabric-type material spoke elements extending between the hub and the rim for performing the spoke function. The fabric-type material bears the weight of the load supported by the wheel in suspension from the rim. The spoke elements are secured to the hub and the rim and means are provided for tensioning the spoke material. The fabric-type material spoke elements diverge from each other toward the hub for triangulation and stability. The spoke elements may be in the form of disks or shallow conical elements secured to the rim as by hooks, and may be collapsed and folded into a small space. For tensioning, telescoping hub elements are described by way of example. A variety of rim constructions are also provided including a collapsible rim or segmented rim of a plurality of articulated polygonal abutting rim segments flexibly joined in sequence. Segmented rim may be folded and compressed into a circular arch with peripheral tread which forms the wheel tread. The fabric-type material spoke elements may comprise foldable strips such as ropes lines, cords or cables extending between the hub and rim and compressing the rim segments under tension. A fully collapsible wheel is therefore provided. A compression type portable wheel with conical shell spoke elements is also described.
Public/Granted literature
- US5846345A Intermetallic alloy based on titanium aluminide for casting Public/Granted day:1998-12-08
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