초록 ▼

A manhole cover support cooperable with a manhole frame for raising the elevation of a manhole cover utilizes a gapped support body positionable between the frame and the manhole cover and size-adjustment mechanisms for altering the size of the outer periphery of the support body. The support body i

A manhole cover support cooperable with a manhole frame for raising the elevation of a manhole cover utilizes a gapped support body positionable between the frame and the manhole cover and size-adjustment mechanisms for altering the size of the outer periphery of the support body. The support body includes one section disposed on one side of its gap and another section disposed on the opposite side of its gap, and the size-adjustment mechanisms include a threaded shank attached to the one section of the support body so as to extend across the gap provided therein. The size-adjustment mechanisms also include a U-shaped bracket attached to the another section of the support body so that the portion of the threaded shank which extends across the gap is accepted by the U of the U-shaped bracket and further includes a nut threaded upon the shank so as to be disposed between the attached end of the shank and the bracket. By rotating the nut about the shank so that the bracket is moved away from the attached end of the shank by the nut, the outer dimensions of the support body are increased. The inside surface of the U of the U-shaped bracket is shaped to accommodate a shifting of the shank relative thereto in a manner which reduces the exposure of the bracket and shank to undue strain from one another.

대표청구항 ▼

A manhole cover support cooperable with a manhole frame having an upwardly-opening recess within which a manhole cover is positionable for supporting the manhole cover in an elevated condition with respect to the frame, the manhole cover support comprising: a support body receivable by the upwardly-

A manhole cover support cooperable with a manhole frame having an upwardly-opening recess within which a manhole cover is positionable for supporting the manhole cover in an elevated condition with respect to the frame, the manhole cover support comprising: a support body receivable by the upwardly-opening recess of a manhole frame and having a central access opening and a gap extending between the central access opening and the outer periphery of the support body so that one section of the support body is disposed on one side of the gap and another section of the support body is disposed on the opposite side of the gap; and means for adjusting the outer dimension of the support body including: a) an elongated shank having a length and being associated with the one section of the support body and having two opposite end portions; b) means attached to the another section of the support body providing a passageway opening generally toward said one section, one end portion of the shank being fixedly attached to said one section so that the shank is thereby prevented from moving relative to the one section and the other end portion of the shank being externally-threaded along at least a segment of its length and being received by the passageway of the passageway-providing means; and c) a rotatable body having an internally-threaded opening threaded upon the externally-threaded segment of said other end portion of the shank and disposed generally between said one end portion of the shank and the passageway-providing means so that by rotating the rotatable body about said other end portion of the shank so as to act upon and thereby move said passageway-providing means along the length of the shank and generally away from said one shank end portion, the outer dimensions of the support body are increased, and the passageway of the passageway-providing means is adapted to accommodate a shift in position of said other end portion of the shank relative to the passageway in a direction substantially perpendicular to the length of the shank as the outer dimensions of the support body are increased and as the shank is prevented from moving relative to the one section of the support body.