Flexible concrete form
OwnerMichael E. Shartzer, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A flexible concrete form which can be arranged to provide both straight and curved configurations, and is adapted to flex both horizontally and vertically. The form includes a face panel and upper and lower flanges having lips on their back edges. An intermediate rib spaced below the upper flange provides a ledge on which a rigid core member can be installed to enhance the rigidity for straight areas. The upper and lower flanges have aligned openings for receiving stakes used to anchor the form to the ground. The form is preferably constructed from polyethylene, polyvinyl chloride, or polybutylene because of the strength and flexibility of these materials as well as their ability to release from concrete without the need for scraping or release agents.
Claims15
An apparatus for forming poured concrete and other moldable material, comprising:
- an elongate flexible form, wherein said form is constructed from a material in the group consisting of polyethylene, polyvinyl chloride, and polybutylene;
- and wherein said form has a face and a pair of spaced apart flanges presenting a channel therebetween;
- and wherein said form is adapted for flexure in a horizontal and a vertical direction;
- a rigid core member having a size to fit in said channel and a substantially straight shape, said form being adapted for flexure into a curved shape with the channel vacant and for arrangement in a straight shape with the core member in the channel to rigidify the form;
- a lip projecting downwardly from said upper flange to define a backside of said channel;
- and
- anchoring means for fixing said form to the ground.
An apparatus for forming poured concrete and other moldable material, comprising:
- an elongate flexible form, wherein said form is constructed from a material in the group consisting of polyethylene, polyvinyl chloride, and polybutylene, and wherein said form has a face and a pair of spaced apart flanges presenting a channel therebetween, and wherein said form is adapted for flexure in a horizontal and a vertical direction;
- a rigid core member having a size to fit in said channel and a substantially straight shape, said form being adapted for flexure into a curved shape with the channel vacant and for arrangement in a straight shape with the core member in the channel to rigidify the form;
- a rib projecting from said face at a location spaced above the lower flange and below the upper flange, said rib forming the bottom of said channel and presenting a ledge on which said core member rests when inserted in the channel;
- and
- anchoring means for fixing said form to the ground.
An apparatus for forming poured concrete and other moldable material, comprising:
- a form constructed of a flexible plastic material and having a face for contacting the moldable material, said face having upper and lower edges and upper and lower flanges extending therefrom;
- a plurality of openings in each of said flanges arranged in pairs with an opening in the upper flange of each pair generally aligned vertically above an opening in the lower flange of the pair;
- a ledge extending from said face at a location between the upper and lower flanges, said form presenting an open channel immediately above said ledge;
- a rigid core member for insertion in said channel to rigidify said form;
- and
- a plurality of stakes applicable through said pairs of openings to anchor said form to the ground.
An apparatus for forming poured concrete and other moldable material, comprising:
- a form constructed of a flexible plastic material and having a face for contacting the moldable material, said face having upper and lower edges and upper and lower flanges extending therefrom;
- means on said form for providing a ledge spaced between said flanges, said ledge cooperating with the upper flange to present a channel on the form;
- a rigid core member in said channel for enhancing the rigidity of the form;
- and
- means for anchoring the form to the ground.
Dependencies are inferred from the claim text.