Plastic slab bolster upper
First Claim
Patent Images
1. A slab bolster upper for supporting rebar in a reinforced concrete structure comprising:
- an elongated base having upper and lower surfaces;
an elongated support section for engaging and supporting rebar connected and projecting from said upper surface of said base;
said base and said support section being of plastic construction; and
voids formed through said base and said support section with said voids comprising a major portion of said base and said support section, whereby concrete, during placement thereof, may flow freely through and around said base and said support section.
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Accused Products
Abstract
A slab bolster upper for supporting rebar in a reinforced concrete structure while the concrete is poured and thereafter cures, is of molded plastic construction and is formed with horizontal and vertical voids that facilitate concrete placement and break up potential shear planes. Opposite ends of each unit are provided with complementary buckles to interconnect with like units to form a continuous support of desired length.
48 Citations
30 Claims
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1. A slab bolster upper for supporting rebar in a reinforced concrete structure comprising:
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an elongated base having upper and lower surfaces;
an elongated support section for engaging and supporting rebar connected and projecting from said upper surface of said base;
said base and said support section being of plastic construction; and
voids formed through said base and said support section with said voids comprising a major portion of said base and said support section, whereby concrete, during placement thereof, may flow freely through and around said base and said support section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A slab bolster upper adapted to support rebar in a reinforced concrete structure comprising:
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an elongated molded plastic base having upper and lower surfaces;
a plurality of posts projecting substantially perpendicularly away from said upper surface of said base at regularly spaced intervals; and
an elongated rebar-engaging cap connected to outer ends of said posts and extending substantially parallel to said base. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. The slab bolster upper comprising:
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an elongated substantially planar base;
elongated, substantially parallel ribs projecting from said base along opposite longitudinal edges thereof and substantially medially of said base;
a plurality of posts projecting from said base at substantially regularly spaced intervals therealong;
gussets extending transversely and longitudinally of said base at junctures thereof with said posts;
an elongated cap extending in substantially parallel relationship to said base;
complementary pin and socket joint elements mechanically interconnecting said cap and outer ends of said posts;
transversely extending ridges projecting from an upper surface of said cap; and
complementary buckles formed on opposite ends of said cap and said base for interconnecting said slab bolster upper with like units.
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30. The slab bolster upper comprising:
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a substantially planar elongated base having upper and lower surfaces;
elongated ribs projecting upwardly from opposite edges of said base;
a substantially planar elongated web projecting substantially perpendicularly from said upper surface of said base substantially medially thereof;
voids formed through said base and said web with said voids comprising a major portion of said base and said web, whereby concrete, during placement thereof, may flow freely through and around said base and said web;
a rebar-engaging cap mounted on an outer edge of said planar web and extending in substantially parallel relationship to said base; and
complementary buckles formed on opposite ends of said base and said cap for interconnecting said slab bolster upper with like units.
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Specification