Undermattress laths having spring type connections
AssigneeHcm Co., Ltd.
InventorsFranz Aschwanden, M. Eberhart
Life of this patent
Estimating the term…
Abstract
An undermattress which includes a frame which is spanned in a transverse direction by a plurality of laths which are supported on the frame at each end, so as to be yieldable in a direction of loading of the undermattress, by structure that holds a plurality of laths via joints (3,4,7) which are each formed from a joint pin (3) having a spherical or ellipsoidal joint head (4) and a guide bush (7). Each joint head (4) is fitted into a respective guide bush (7) and is shaped for enabling movement of the joint pin (3) relative to the guide bush (3) in every direction. In this way, sufficient freedom of movement is provided to enable the laths to be held without tilting on the frame even under unilateral loading.
Claims26
Undermattress comprising a frame which is spanned in a transverse direction by a plurality of laths which are supported on the frame at each end by a respective joint and by a yieldable means for supporting said laths in conjunction with said joints so as to be yieldable in a direction of loading of the undermattress, wherein each joint is formed from a joint pin having a rounded joint head and a guide bush, each joint head being fitted into a respective guide bush, without engaging an opposite side thereof, and being shaped for enabling movement of the joint pin relative to the guide bush in every direction.
Dependencies are inferred from the claim text.