Clamp for umbrella stick
First Claim
1. For use in a static umbrella, a base-tube which is adapted to be supported vertically, an umbrella stick removably and telescopically located in the top of said base-tube and for carrying, at its upper end, a canopy framework of the umbrella, and a clamping device mounted on the upper end of said base-tube for releasably clamping the lower end of the telescoped stick, said clamping device including a cuff having an annular bush defining at its upper end a passageway providing an entry opening for said umbrella stick and at its lower end a rigid enclosure of the base tube, said cuff defining a lateral projection of said annular bush and enclosing a flexible segment defining a clamping cheek for abutting against said telescoped umbrella stick, said clamping cheek being swingably arranged within said passageway and within said cuff and connected flexibly to said bush, and a screw-threaded adjustment means within said lateral projection and operatively connected to said segment for flexing said segment inward into said passageway relative to said bush to reduce said passageway and to bring said clamping cheek of said segment into frictional contact with said unbrella stick whereby substantially the entire outer surface of the stick is tightly gripped.
2 Assignments
0 Petitions
Accused Products
Abstract
A clamping device of a static umbrella (e.g. the frame of a garden or beachmbrella) has a segment which is flexibly connected to a bush which surrounds an umbrella stick. A handle rotatably mounted in a boss attached to the bush is able to overcome the natural springiness of the segment to move it towards the umbrella stick so that a clamping cheek of the segment holds the umbrella stick in position relative to a base tube. With this construction, the device need have no longitudinal split, which would expose the mechanism to the effects of the weather, and the mechanism is enclosed, thereby preventing the umbrella stick or users from being hurt on the sharp corners and edges of the mechanism.
17 Citations
9 Claims
- 1. For use in a static umbrella, a base-tube which is adapted to be supported vertically, an umbrella stick removably and telescopically located in the top of said base-tube and for carrying, at its upper end, a canopy framework of the umbrella, and a clamping device mounted on the upper end of said base-tube for releasably clamping the lower end of the telescoped stick, said clamping device including a cuff having an annular bush defining at its upper end a passageway providing an entry opening for said umbrella stick and at its lower end a rigid enclosure of the base tube, said cuff defining a lateral projection of said annular bush and enclosing a flexible segment defining a clamping cheek for abutting against said telescoped umbrella stick, said clamping cheek being swingably arranged within said passageway and within said cuff and connected flexibly to said bush, and a screw-threaded adjustment means within said lateral projection and operatively connected to said segment for flexing said segment inward into said passageway relative to said bush to reduce said passageway and to bring said clamping cheek of said segment into frictional contact with said unbrella stick whereby substantially the entire outer surface of the stick is tightly gripped.
Specification