Pre-fabricated step and stairway system
First Claim
1. A prefabricated step including a tread and a riser, comprising:
- an elongated body substantially triangular in cross-section and having at least a first side, and a second side, wherein said first side comprises the tread and said second side comprises a riser and form an edge therebetween, said body further having a first end and second end;
at least one attachment member integrated with said body, wherein said at least one attachment member includes a pair of plates, one of said plates rigidly integrated with said body proximate to said first end and the other of said plates rigidly integrated with said body proximate to said second end;
a reinforcing member integrated along the length of said body, and wherein said plates are rigidly attached to said reinforcing member, anda pair of metal members, each said member rigidly attached to said plates respectively on said first end and said second end of said body.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention is a prefabricated step and stairway system, where the prefabricated step is preferably a precast concrete step having an elongate body substantially triangular in cross-section having a first side as a tread, a second side as a riser adjacent the first side, and a third side, and the step further has a first and second end which preferably include an attachment member to attach the step between a pair of stringers. The attachment member is preferably integrated metal plates proximate to the first end and second end to facilitate attachment between a pair of stringers, and preferably includes one or more reinforcing members attached to the metal plates and integrated throughout the length of the body to strengthen the step. The prefabricated steps are rigidly secured either to intermediate runners between a pair of stringers, upon a brace, or directly to stringers to form a stairway. There is also provided an inventive mold for forming a precast concrete step preferably at remote locations to the installation site of the stairway.
20 Citations
32 Claims
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1. A prefabricated step including a tread and a riser, comprising:
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an elongated body substantially triangular in cross-section and having at least a first side, and a second side, wherein said first side comprises the tread and said second side comprises a riser and form an edge therebetween, said body further having a first end and second end; at least one attachment member integrated with said body, wherein said at least one attachment member includes a pair of plates, one of said plates rigidly integrated with said body proximate to said first end and the other of said plates rigidly integrated with said body proximate to said second end; a reinforcing member integrated along the length of said body, and wherein said plates are rigidly attached to said reinforcing member, and a pair of metal members, each said member rigidly attached to said plates respectively on said first end and said second end of said body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A stairway, comprising:
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a pair of spaced apart stringers; a plurality of prefabricated steps rigidly attached to said at least one support member, each of said prefabricated concrete steps comprised of; an elongated body substantially triangular in cross-section and having at least a first side and a second side, wherein said first side comprises the tread and said second side comprises a riser and form an edge therebetween, said body further having a first end and second end; and at least one attachment member including a pair of plates rigidly integrated with said body side, one said plate being proximate to said first end and the other said plate being proximate to said second end; and a plurality of intermediate support members, each said intermediate support member being rigidly attached to one of said stringers, and each said intermediate support member being in contact with one plate of said pair of plates. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A stairway, comprising:
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a pair of spaced apart stringers; a plurality of prefabricated steps rigidly attached to said at least one support member, each of said prefabricated concrete steps comprised of; an elongated body substantially triangular in cross-section and having at least a first side and a second side wherein said first side comprises the tread and said second side comprises a riser and form an edge therebetween, said body further having a first end and second end; and at least one attachment member including a pair of plates rigidly integrated with said body, one said plate being proximate to said first end and the other said plate being proximate to said second end; and a plurality metal members rigidly attached to said stringers, whereby each of said steps is rigidly attached to the metal members to thereby secure each of said plurality of steps between the stringers.
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23. A method of making a stairway, comprising the steps of:
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casting one or more steps by pouring concrete mixture within a preshaped mold to thereby cure within the mold, thereby creating steps having an elongate body substantially triangular in cross-section, and having a first and second end; removing each cured concrete step from the respective molds; securing a pair of stringers to a structure where a stairway is desired; sequentially securing a plurality of cured concrete steps between the secured pair of stringers, thereby creating a stairway; placing metal plates within the mold prior to pouring the concrete mixture whereby each plate is respectively integrated proximate to the first end and second end respectively of each cured concrete step; and securely attaching at least one runner to each stringer. - View Dependent Claims (24, 25, 26, 29, 30, 31, 32)
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27. A method of making a stairway, comprising the steps of:
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casting one or more steps by pouring concrete mixture within a preshaped mold to thereby cure within the mold, thereby creating steps having an elongate body substantially triangular in cross-section, and having a first and second end; removing each cured concrete step from the respective molds; securing a pair of stringers to a structure where a stairway is desired; sequentially securing a plurality of cured concrete steps between the secured pair of stringers, thereby creating a stairway; placing metal plates within the mold prior to pouring the concrete mixture whereby each plate is respectively integrated proximate to the first end and second end respectively of each cured concrete step; and securely attaching a plurality of metal members to each of the pair of stringers. - View Dependent Claims (28)
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Specification