Flow channel form design for manhole assemblies
AssigneeS & M Precast, Inc.
InventorRaymond L. Graf
Life of this patent
Estimating the term…
Abstract
The present disclosure is generally directed to processes and apparatuses for use in forming one or more flow channels within a prefabricated manhole assembly. More specifically, an exemplary apparatus embodying various aspects of the disclosure may contain a rigid channel form with a closed top portion, a curved bottom portion, a first end, and a second end. The apparatus may also contain a bung(s) removably positioned into an exterior hole through a sidewall of the prefabricated manhole that may receive one end of the channel form, the bung(s) interior end may further have an open-ended U-shaped slot. A sliding wedge may be used to engaged/disengage the flow channel form.
Claims12
A reusable apparatus for forming a flow channel for use in a prefabricated manhole, said apparatus comprising:
- a rigid channel form, said channel form comprising a closed top portion, a curved bottom portion, a first end, and a second end;
- at least one bung removably positioned into an exterior hole through a sidewall of said prefabricated manhole, wherein said at least one bung is configured to receive one of said first or said second end of said channel form, wherein said at least one bung comprises an interior end removably connected to said channel form and an exterior end, said interior end of the at least one bung further comprising an open-ended U-shaped slot receiving said one of said first end or said second end of said channel form;
- and
- at least one movable wedge slidably received by said at least one bung, said wedge slides between an engaged position wherein said flow channel is fixed between said wedge and said U-shaped slot and a disengaged position wherein said flow channel is either inserted or removed from said U-shaped slot.
Dependencies are inferred from the claim text.