Joint forming and sealing device

Claim 2

A joint forming and sealing device adapted to be imbedded in the top surface of freshly poured concrete to induce the formation and automatic sealing of a joint on setting thereof comprising, in combination, a flexible seal member having an expandable central loop and a pair of substantially vertically extending depending end portions, a top cap having means thereon in engagement with the central loop of said seal member, and slot forming carrying means in engagement with the depending end portions of said seal member, particles of aggregate bondable with concrete adhered to the outer faces of said depending end portions of said seal member whereby when said joint forming device is inserted in freshly poured concrete, said slot forming carrying means forms a slot in the concrete and transports said seal member and said top cap to a position wherein the upper face of said top cap is substantially level with the upper surface of the concrete and with the flexible seal member disposed substantially below the upper surface of the concrete, and the particles of aggregate bond the end portions of said seal member with the concrete, said means on said top cap engageable with the expandable central loop on the seal member permitting the expandable loop to expand as the concrete shrinks and the removeable cap may be later removed from the joint leaving the seal member disposed beneath the upper surface of the concrete preventing entry of foreign matter into the joint beneath the seal member and with the expandable central loop disposed beneath the upper surface of the concrete so as to be free from wear due to traffic on the concrete surface.

Claim 3

A joint forming and sealing device according to claim 1 wherein said expandable central loop extends upwardly and said means on the removable top cap includes a channel having walls engageable with said loop.

Claim 4

A joint forming and sealing device according to claim 1 wherein said slot forming carrying means comprises a rigid member disposed between said depending end portions of said seal member.

Claim 5

A joint forming and sealing device according to claim 1 wherein said slot forming carrying means comprises a pair of rigid members disposed between said depending end portions of said seal member, one of said rigid members being secured to one of the depending end portions of the seal member and the other of said rigid members being secured to the other depending end portion of the seal member.

Claim 6

A joint forming and sealing device adapted to be imbedded in the top surface of freshly poured concrete to induce the formation and automatic sealing of a joint on setting thereof comprising, a flexible seal member, a pair of rigid members, one substantially vertically extending end portion of said flexible seal member being secured to the side face of one of said rigid members, the other substantially vertically extending end portion of said flexible seal member being secured to the side face of the other of said rigid members, that portion of said flexible seal between said end portions forming an expandable loop and extending continuously along the length of said members, particles of aggregate bondable with concrete adhered to the outer side face of said rigid member and on the outer end portions of said flexible seal member, and a removable cap member disposed on the upper surface of said flexible seal member. and including inwardly biased legs engageable with said expandable loop to assist in retaining said loop in an unexpanded position and said rigid members together while said joint forming device is being inserted into concrete whereby said device is adapted to be inserted in freshly poUred concrete with the upper surface of said removable cap member substantially level with the upper surface of the concrete and with the expandable loop disposed substantially below the upper surface of the concrete, and the particles of aggregate tenaciously bonding the vertically extending end portions of said flexible seal member to the concrete so that when the concrete shrinks said rigid members move with the concrete and said inwardly biased legs on said removable cap engageable with the expandable loop permit the expandable loop to expand and the removable cap may be later removed from the joint leaving said seal member disposed beneath the upper surface of the concrete and together with said rigid members bonded to the concrete preventing the entry of foreign matter into the joint beneath the seal member.

Claim 7

A joint forming and sealing device adapted to be imbedded in the top surface of freshly poured concrete to induce the formation and automatic sealing of a joint on setting thereof comprising, a flexible seal member, a pair of rigid members, one substantially vertically extending end portion of said flexible seal member being secured to the side face of one of said rigid members, the other substantially vertically extending end portion of said flexible seal member being secured to the side face of the other of said rigid members, that portion of said flexible seal between said end portions forming an expandable loop and extending continuously along the length of said members, particles of aggregate bondable with concrete adhered to the outer side face of said rigid member and on the outer end portions of said flexible seal member, and a removable cap member disposed on the upper surface of said flexible seal member. and including inwardly biased legs engageable with said expandable loop to assist in retaining said loop in an unexpanded position and said rigid members together while said joint forming device is being inserted into concrete whereby said device is adapted to be inserted in freshly poUred concrete with the upper surface of said removable cap member substantially level with the upper surface of the concrete and with the expandable loop disposed substantially below the upper surface of the concrete, and the particles of aggregate tenaciously bonding the vertically extending end portions of said flexible seal member to the concrete so that when the concrete shrinks said rigid members move with the concrete and said inwardly biased legs on said removable cap engageable with the expandable loop permit the expandable loop to expand and the removable cap may be later removed from the joint leaving said seal member disposed beneath the upper surface of the concrete and together with said rigid members bonded to the concrete preventing the entry of foreign matter into the joint beneath the seal member.

Claim 8

A joint forming and sealing device adapted to be imbedded in the top surface of freshly poured concrete to induce the formation and automatic sealing of a joint on setting thereof comprising, a flexible seal member, a pair of rigid members, temporary bonding means between the inner faces of said rigid members, one substantially vertically extending end portion of said flexible seal member being secured to the side face of one of said rigid members, the other substantially vertically extending end portion of said flexible seal member being secured to the side face of the other of said rigid members, that portion of said flexible seal between said end portions forming an expandable loop and extending continuously along the length of said members, particles of aggregate bondable with concrete adhered to the outer side faces of said rigid members and on the outer end portion of said flexible seal member, and a removable cap member disposed on the upper surface of said flexible seal member and including means engageable with said expandable loop whereby said device is adapted to be inserted in freshly poured concrete with the upper surface of said removable cap member substantially level with the upper surface of the concrete and with the expandable loop disposed substantially below the upper surface of the concrete, and the particles of aggregate tenaciously bonding the side faces of said rigid members and the vertically extending end portions of said flexible seal member to the concrete so that when the concrete shrinks said temporary bonding means ruptures and said rigid members move with the concrete and said means on said removable cap engageable with the expandable loop permits the expandable loop to expand and the removable cap may be later removed from the joint leaving said seal member disposed beneath the upper surface of the concrete and together with said rigid members bonded to the concrete, preventing the entry of foreign matter into the joint beneath the seal member.

Claim 9

A joint forming and sealing device adapted to be imbedded in the top surface of freshly poured concrete to induce the formation and automatic sealing of a joint on setting thereof comprising, a flexible seal member, a pair of rigid members, temporary bonding means between the inner faces of said rigid members, one substantially vertically extending end portion of said flexible seal member being secured to the side face of one of said rigid members, the other substantially vertically extending end portion of said flexible seal member being secured to the side face of the other of said rigid members, that portion of said flexible seal between said end portions forming an expandable loop and extending continuously along the length of said members, particles of aggregate bondable with concrete adhered to the outer side faces of said rigid members and on the outer end portion of said flexible seal member, and a removable cap member disposed on the upper surface of said flexible seal member and including means engageable with said expandable loop whereby said device is adapted to be inserted in freshly poured concrete with the upper surface of said removable cap member substantially level with the upper surface of the concrete and with the expandable loop disposed substantially below the upper surface of the concrete, and the particles of aggregate tenaciously bonding the side faces of said rigid members and the vertically extending end portions of said flexible seal member to the concrete so that when the concrete shrinks said temporary bonding means ruptures and said rigid members move with the concrete and said means on said removable cap engageable with the expandable loop permits the expandable loop to expand and the removable cap may be later removed from the joint leaving said seal member disposed beneath the upper surface of the concrete and together with said rigid members bonded to the concrete, preventing the entry of foreign matter into the joint beneath the seal member.

Claim 10

A joint forming device according to claim 6 wherein said expandable loop extends upwardly and said means on the vertically removable cap member includes a channel having walls engageable with said loop.

Claim 11

A joint forming device according to claim 6 wherein said expandable loop extends downwardly and said means on the removable cap member includes a projection engageable with said loop.