US2009242729A1PendingUtilityA1

Formwork tie & apparatus for retaining tie

58
Individually held — no corporate assignee on recordPriority: Mar 27, 2008Filed: Mar 27, 2008Published: Oct 1, 2009
Est. expiryMar 27, 2028(~1.7 yrs left)· nominal 20-yr term from priority
Inventors:Philip T. Ward
E04G 17/047E04G 2017/0646E04G 17/04
58
PatentIndex Score
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Claims

Abstract

A primary pin apparatus having an adjustable one-step connection and disconnection mechanism, a supplemental pin apparatus for supplementing the primary pin apparatus and engaging ties, and an improved tie having a non-circular engagement hole. The primary and supplemental pin apparatuses each include an engagement pin including one or more locking fingers which selectively protrude angularly outward from a longitudinal axis of the engagement pin, wherein the locking fingers are selectively extendable and retractable in order to, respectively, connect and disconnect adjacent forming panels of a formwork. The tie includes a body which is elongated along a longitudinal axis and has an end presenting an engagement hole for receiving a pin, wherein the engagement hole having a greater dimension along the longitudinal axis and a lesser dimension along an axis which is perpendicular to the longitudinal axis.

Claims

exact text as granted — not AI-modified
1 . A tie for connecting and maintaining a spacing between a first panel and a second panel, the tie comprising:
 a body which is elongated along a longitudinal axis and having an end presenting an engagement hole for receiving a pin operable to secure the tie to the first panel, with the engagement hole having a greater dimension along the longitudinal axis and a lesser dimension along an axis which is perpendicular to the longitudinal axis.   
   
   
       2 . The tie as set forth in  claim 1 , wherein the first and second panels are each a forming panel which is part of a formwork. 
   
   
       3 . The tie as set forth in  claim 1 , wherein the engagement hole is non-circular. 
   
   
       4 . The tie as set forth in  claim 1 , wherein the engagement hole has a first lobe and a second lobe. 
   
   
       5 . The tie as set forth in  claim 4 , wherein the first lobe and the second lobe are the same size. 
   
   
       6 . The tie as set forth in  claim 4 , wherein the first lobe and the second lobe are the same shape. 
   
   
       7 . The tie as set forth in  claim 4 , wherein the first lobe and the second lobe have different sizes. 
   
   
       8 . The tie as set forth in  claim 4 , wherein the first lobe and the second lobe have different shapes. 
   
   
       9 . A system comprising:
 a tie for connecting and maintaining a spacing between a first panel and a second panel, the tie including a body which is elongated along a longitudinal axis and having an end presenting a engagement hole having a greater dimension along the longitudinal axis and a lesser dimension along an axis which is perpendicular to the longitudinal axis; and   a pin for selectively connecting the tie to the first panel and having a cross-sectional shape which corresponds to the engagement hole, such that the pin is selectively receivable within the engagement hole.   
   
   
       10 . The system as set forth in  claim 9 , wherein the first and second panels are each a forming panel which is part of a formwork. 
   
   
       11 . The system as set forth in  claim 9 , wherein the engagement hole is non-circular. 
   
   
       12 . The system as set forth in  claim 9 , wherein the engagement hole has a first lobe and a second lobe. 
   
   
       13 . The system as set forth in  claim 12 , wherein the first lobe and the second lobe are the same size. 
   
   
       14 . The system as set forth in  claim 12 , wherein the first lobe and the second lobe are the same shape. 
   
   
       15 . The system as set forth in  claim 12 , wherein the first lobe and the second lobe are different sizes. 
   
   
       16 . The system as set forth in  claim 12 , wherein the first lobe and the second lobe are different shapes. 
   
   
       17 . A system comprising:
 a first forming panel and a second forming panel which are spaced apart from one another and are part of a formwork;   a tie for connecting and maintaining the spacing between the first forming panel and the second forming panel, the tie including a body which is elongated along a longitudinal axis and having a first end presenting a first engagement hole and a second end presenting a second engagement hole, wherein each of the first and second engagement holes presents a first lobe and a second lobe such that the engagement hole has a greater dimension along the longitudinal axis and a lesser dimension along an axis which is perpendicular to the longitudinal axis; and   a first pin for selectively connecting the first end of the tie to the first forming panel, and a second pin for selectively connecting the second end of the tie to the second panel, wherein each of the first and second pins have a cross-sectional shape which corresponds to the respective engagement hole, such that the pin is selectively receivable within the engagement hole.   
   
   
       18 . The system as set forth in  claim 18 , wherein the engagement hole is non-circular. 
   
   
       19 . The system as set forth in  claim 18 , wherein the first lobe and the second lobe are the same size. 
   
   
       20 . The system as set forth in  claim 18 , wherein the first lobe and the second lobe are the same shape. 
   
   
       21 . The system as set forth in  claim 18 , wherein the first lobe and the second lobe are different sizes. 
   
   
       22 . The system as set forth in  claim 18 , wherein the first lobe and the second lobe are different shapes.

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