Self-sealing tie assembly for erecting concrete forms

A concrete forming system comprising:

• opposed concrete forms spaced a predetermined distance apart;
• an elongated tie rod having means disposed at each end thereof for releasably mounting the tie rod in fixed position on the concrete forms;
• means associated with the tie rod between the ends thereof and an external spreader means mounted thereon to releasably hold the concrete forms a predetermined distance apart;
• an elongatable, elastomeric sleeve not requiring a lubricant thereon positioned between the ends of the tie rod and being of a length greater than the distance between the forms;
• said sleeve and tie rod having interengageable surfaces for releasably coupling the sleeve to the tie rod in order that it may be replaced by another of said sleeves and including a guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms so that both ends of the sleeve are projected exteriorly of the space between the forms whereby the openings are sealed by the elastomeric sleeve due to the lateral deformation of the sleeve when in the openings by the compressive forces exerted by the concrete on the tie assembly to provide a self sealing removable closure by the elastomeric sleeve, and the tie rod having coupling means disposed adjacent each end thereof for releasably mounting the tie rod to the concrete forms and anchor means removably mounted on the concrete forms so as to maintain the forms in fixed position.

The combination of a feed-through, self sealing tie assembly and concrete forms, the feed-through, self sealing tie combination for mounting as a unit on the concrete forms and capable of being removed therefrom without first disassembling the forms or the tie assembly and without requiring a lubricant thereon, said assembly comprising:

• opposed concrete forms spaced a selected distance apart;
• an elongated tie rod having means disposed at each end thereof for releasably mounting the tie rod in fixed position on the concrete forms;
• means associated with the tie rod between the ends thereof for mounting an external spreader means to releasably hold the concrete forms a predetermined distance apart;
• an elongatable, elastomeric sleeve positioned between the ends of the tie rod and being of a length greater than the selected distance between the forms;
• said sleeve and tie rod having interengageable surfaces for releasably coupling the sleeve to the tie rod in order that it may be replaced by another of said sleeves and including a guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms so that both ends of the sleeve are projected exteriorly of the space between the forms whereby the openings are sealed by the elastomeric sleeve due to the lateral deformation of the sleeve when in the openings by the compressive forces exerted by the concrete on the tie assembly to provide a self sealing removable closure by the elastomeric sleeve.

The combination of a feed-through tie assembly and concrete forms, the feed-through tie assembly for mounting as a unit on the concrete forms and for removal therefrom as a unit without first disassembling the forms or the tie assembly and without requiring a lubricant thereon, said combination comprising:

• opposed concrete forms spaced a selected distance apart;
• an elongated tie rod having means disposed at each end thereof for cooperating in releasably mounting the tie rod in fixed position of the forms;
• an elongatable, replaceable elastomeric sleeve positioned between the ends of the tie rod and being of a length greater than the selected distance between the forms;
• said sleeve and tie rod having interengageable surface for coupling the sleeve to the tie rod for facilitating the replacement of the sleeve when worn or damaged, said elongatable elastomeric sleeve when positioned through opposed openings in the forms being self sealing due to the lateral deformation and bubbling of the sleeve when it is in the openings by the compressive forces exerted by the concrete on the tie assembly thereby plugging the openings to provide a self sealing removable closure by the elastomeric sleeve;
• and
• guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms so that both ends of the sleeve are projected exteriorly of the space between the forms.

A feed-through tie assembly for mounting as a unit on concrete forms and for removal therefrom as a unit without first disassembling the forms or the tie assembly and without requiring a lubricant thereon, said assembly comprising:

• an elongated tie rod having means disposed at each end thereof for cooperating in releasably mounting the tie rod in fixed position on the forms;
• means associated with the tie rod between the ends thereof for mounting external spreader means to releasably hold the concrete forms a predetermined distance apart;
• an elongatable, elastomeric sleeve positioned between the ends of the tie rod;
• guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms;
• and
• said sleeve and tie rod having interengageable surfaces for releasably coupling the sleeve to the tie rod, the interengageable surfaces for releasably coupling the sleeve to the tie rod including a threaded coupling mounted at one end of the sleeve which is held in fixed position by said guide means and the tie rod having a complementary threaded portion for threaded engagement of said coupling with said tie rod.

A feed through tie assembly for mounting as a unit on concrete forms and for removal therefrom as a unit without first disassembling the forms or the tie assembly and without requiring a lubricant thereon, said assembly comprising;

• an elongated tie rod having means disposed at each end thereof for cooperating in releasably mounting the tie rod in fixed position on the forms;
• an elongatable, replaceable elastomeric sleeve positioned between the ends of the tie rod;
• guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms so that both ends of the sleeve are projected exteriorly of the forms;
• and
• said sleeve and tie rod having interengageable surfaces for releasably coupling the sleeve to the tie rod for facilitating the replacement of the sleeve when worn or damaged, the interengageable surfaces for releasably coupling the sleeve to the tie rod including mating threads on a threaded coupling associated with the guide means affixed to said one end of the sleeve and upset threads on the tie rod intermediate the ends of the rod.

The combination of a feed-through tie assembly and concrete forms, the feed-through tie assembly for mounting as a unit on the concrete forms and for removal therefrom as a unit without first disassembling the forms or the tie assembly and without requiring a lubricant thereon, said combination comprising:

• opposed concrete forms spaced a selected distance apart;
• an elongated tie rod having means disposed at each end thereof for cooperating in releasably mounting the tie rod in fixed position on the forms;
• spreader means for associated with the forms for holding the concrete forms a predetermined distance apart;
• an elongatable, elastomeric sleeve positioned between the ends of the tie rod and being of a length greater than the selected distance between the forms, said elongatable elastomeric sleeve when positioned through opposed openings in the forms being self sealing due to the lateral deformation and bubbling of the sleeve when it is in the openings by the compressive forces exerted by the concrete on the tie assembly thereby plugging the openings to provide a self sealing removable closure by the elastomeric sleeve;
• said sleeve and tie rod having interengageable surfaces for coupling the sleeve to the tie rod;
• and
• guide means positioned over one end of the sleeve to facilitate insertion of the tie assembly through opposed spaced openings in the forms so that both ends of the sleeve are projected exteriorly of the space between the forms.