Tent – canopy – umbrella – or cane – Umbrella – Mechanically operated
Reexamination Certificate
1999-02-19
2001-04-24
Canfield, Robert (Department: 3635)
Tent, canopy, umbrella, or cane
Umbrella
Mechanically operated
C135S020100, C135S021000, C135S098000
Reexamination Certificate
active
06220261
ABSTRACT:
TECHNICAL FIELD
The invention relates to a static umbrella which is collapsible and which has a tiltable mast.
BACKGROUND OF THE INVENTION
Static umbrellas of the type mentioned at the outset are known from a number of sources, thus, for example, from DE 32 29 776 A1. The static umbrella described there has a telescopable static mast which comprises a hollow-constructed lower mast part and an upper mast part longitudinally slidable in this and turnably arranged about the mast axis, in which the mutual longitudinal slidability and turnability are adjustable and arrestable by means of a connecting member. On the static mast there is arranged an arm movable in and out by means of a hinge, as well as tiltably about tilting axis of the hinge standing perpendicular to the mast axis. The arm carries on the end away from the mast a collapsible umbrella, and the hinge is provided with an arresting device, by means of which all movements of the hinge are releasable and blockable, respectively.
The known hinge has the disadvantage that on freeing of the tiltability of the arm there is present the danger of an inadvertent folding-down of the umbrella-side end of the arm. Thereby not only is the handling of the umbrella made difficult or even made impossible, but there is also present the danger of injury to the operating person. The disadvantages are further increased by the fact that the freeing of the tiltability of the arm is accompanied by a freeing of the longitudinal slidability, whereby there is yielded the additional hazard of the sliding-out of the arm from the hinge.
SUMMARY OF THE INVENTION
The problem of the invention is to improve a static umbrella of the type mentioned at the outset so that a simpler and safer handling is possible.
The problem is solved according to the invention by a static umbrella which permits a safer and jolt-free moving in and out of the arm.
Through the fact that the hinge is freed only in a restricted angular range, the moving in and out of the arm can be performed safely and without jolts, since a tipping over of the arm carrying the umbrella onto the operating person is excluded and therewith an injury hazard to the operating person is averted. Furthermore, the moving in and out as well as the tilting of the arm becomes simpler and more comfortable.
The formation of the hinge with an open manner of construction is especially suited, furthermore, for an optimal surface treating, such as electrostatic finishing or coating. Furthermore, assembling and maintenance of the components are facilitated.
One advantage of the static umbrella is an especially safe arresting device, by means of which the tilting angle of the arm is dependably arrestable even without excessive tightening of the tensioning device.
Another advantage is execution of the longitudinal guide of the arm. This is suited both for straight and also for curved arms. By the use of non-rotational symmetrical transverse profiles there is avoided an undesired twisting of the arm about the axis of the longitudinal guide, even with released longitudinal guidance, i.e. during the moving in and out of the arm. Another advantage is an especially preferred form of execution of the longitudinal guide, thanks to which the moving in and out of the arm is facilitated, since any yielding of the arm into the dividing gap of the longitudinal guide, conditioned by lever effect, which would have resulted in an increased tension resistance in the arresting of the hinge is prevented. The gearing profiles contribute moreover to the parallel guidance of the hinge shells.
Yet another advantage is the arrangement of the tension device of the hinge is yielded. Since the tensioning device is located between the togglehead and the longitudinal guide of the arm, in the tightening of the tensioning device there is ensured a dependable arresting both of the tiltability and also of the movability of the arm.
Another advantage is a preferred form of execution of the tensioning device, which allows a simple and safe operation and, in particular, precludes an undesired complete unscrewing of the tensioning screw and the danger of an unintended disassembling of the hinge.
REFERENCES:
patent: 3120238 (1964-02-01), Glatz
patent: 3419295 (1968-12-01), Small
patent: 3486514 (1969-12-01), Prescott
patent: 4606366 (1986-08-01), Collet
patent: 5678585 (1997-10-01), May
patent: 407 136 (1935-01-01), None
patent: 32 29 776 (1983-04-01), None
patent: 324 057 (1930-01-01), None
patent: 359 459 (1931-01-01), None
patent: 450 919 (1936-01-01), None
Canfield Robert
Glatz AG
Pappas George
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