Beds – Bedsteads – Having bottom
Patent
1997-07-17
1999-07-20
Green, Brian K.
Beds
Bedsteads
Having bottom
5237, A47C 2306
Patent
active
059241497
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention concerns a three-point bridge suspension end bearing for flexible and inflexible transverse slats in bedframes with the special properties according to its construction:
I. An only slightly progressive adjustment stroke h.apprxeq.H/2 for a fixed support and h.gtoreq.H for a mobile support of the central spring element with H being the total construction height.
II. A large angular adjustment capability of the integrated transverse slat caps about the vertical center as well as a good lateral stability.
III. A sharing of the mount journals by neighboring bridge elements in a hinge-like toothing of the rotary eyes, as well as an integration of the transverse slat caps into the bridge elements or an axial junction to separate rotary slat caps.
IV. Largely variable adjustment to the weight distribution of the on-lying body.
V. Possible use as an element of large adjustment stroke resting on mobile supports like the pneumatic sprung surface bearing (PCT/EP 94/02772) or the flexible/elastic belt for interactively coupling several/all transverse slats.
DESCRIPTION OF THE RELATED ART
Normal end bearing made out of caoutchouc/plastic for transverse slats of bed underframes correspond to the two-point bearing on mount journals arranged in standardized drill holes of 60 mm, 64 mm, etc., distances. Various constructions are known with single or double bows and/or round or oval loops as flexible/elastic elements providing an adjustment stroke of 5 mm to a maximum of 20 mm.
Other two-point end bearings for single or double transverse slats have flexible necks for an angular adjustment of .+-.25.degree., thus having a very small vertical adjustment stroke. In the critical shoulder region, special adjustment elements are used which have strongly progressive (spiral-) spring elongations of 15 mm up to 25 mm and which are additionally inserted between the spar of the bed underframe and the transverse slat end caps, resulting in a shortening of the span of the transverse slats. Bridge elements comprising double caps without mount journals between two mounted end bearing elements are used for a lowering of the shoulder region.
The European patent application EP-A-0575721 discloses a two-point end bearing of which the upper supporting part is connected via a middle cross-piece to a footpart which makes it capable of swivelling. As to the construction, it differs completely from the end bearing described here, since it has no bridge elements.
The German patent application DE-A-3932340 is a two-point end bearing for three wooden transverse slats of which the three end caps are connected via cylindrical, elastic intermediate pieces to the two mount elements and to a cross-piece having an arched curvature.
The three end caps are each connected via bridges. The mount elements cannot rotate about the journals and a fixed bearing or the formation of a mobile bearing is not assigned.
The European patent application EP-A-0 366 065 describes a slat bearing element with a rhombic connecting framework which is inserted between a two-point mounting part fixed to the frame and a slat bearing part.
An additional tensile loaded spring connects free corner-points of the framework of an additional separate socket-line spring part is located in between.
At first sight, the examples, FIGS. 5(11) and 7, show, merely from the external appearance, a certain similarly to the end bearing Triflex; this is true also for the end bearing described in the French patent application FR 26 70 101.
In all three end bearings the two-point mount bearing, part consists of two transverse connections not capable of a rotation about the mount axes or of a transverse connection and a bow segment. Between the transverse connection there is a cap opening for a third slat or in the French application there is a eyelet for a reinforcement cross-slat over the bow segment. In the French application, the upper spring element consists of two arms formed like elbows on which two slat caps are seated spacially separated or connected by
REFERENCES:
patent: 4136411 (1979-01-01), Fanti
patent: 4567615 (1986-02-01), Fanti
patent: 4703526 (1987-11-01), Degen
patent: 4752981 (1988-06-01), Salens
Conley Fredrick
Green Brian K.
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