US3590538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug construction for use with anchor inserts set in concrete
Assignee: Burke Concrete Accessories
•
Filing: 1969-05-19
•
Granted: 1971-07-06
•
Expires: 1989-05-19
Abstract
Abstract A pair of plugs designed for insertion into the opposite ends of a helical coil-type concrete anchor to prevent the intrusion of concrete into the anchor during pouring and provide for exposure of the anchor after the concrete has set. The plug for use in the end of the anchor to be exposed is of shell-like construction and carries an absorbent compressible material on its external end. The plug for use in the internal end of the anchor is made up of a body member threadably engageable in the anchor and a cuplike element designed to provide a void into which the body member may be displaced.
Inventors
- 👤 Jack A Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:49
CPC Classifications
F; F16; F16B; F16B13/00; E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4121
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
122 words
An improved plug for use in combination with an anchoring insert of the type comprising a helical coil having at least one open end, said plug comprising: a. a body proportioned for snug receipt within the open end of the insert and having a recess therein disposed so as to be externally exposed upon receipt of said body within the insert; b. a volume of compressible material received within and substantially filling said recess; and, c. protruding means on said body adapted to extend at least partially between and assume gripping engagement with the convolutional surfaces of the coil to prevent axial displacement of the plug from a coil within which the body is received during normal placement Of the anchoring insert.
Claim 2
Dependent Claim
122 words
An improved plug for use in combination with an anchoring insert of the type comprising a helical coil having at least one open end, said plug comprising: a. a body proportioned for snug receipt within the open end of the insert and having a recess therein disposed so as to be externally exposed upon receipt of said body within the insert; b. a volume of compressible material received within and substantially filling said recess; and, c. protruding means on said body adapted to extend at least partially between and assume gripping engagement with the convolutional surfaces of the coil to prevent axial displacement of the plug from a coil within which the body is received during normal placement Of the anchoring insert.
Claim 3
Dependent Claim
38 words
An improved plug according to claim 1 wherein the recess is generally cup shaped and a barrier is provided within the body to isolate the cup from the interior of an insert within which the body is received.
Claim 4
Dependent Claim
17 words
An improved plug according to claim 1 wherein the compressible material is open celled and water absorbent.
Claim 5
Dependent Claim
57 words
An improved plug according to claim 1 wherein the plug is provided with an extension disposed to extend generally axially from the insert upon receipt of the body therein, said extension having a cross section at least as great as the internal cross section of the coil and less than the external cross section of the coil.
Claim 6
Dependent Claim
77 words
An improved plug for use in combination with an anchoring insert of the type comprising a helical coil having at least one open end, said plug comprising: a. an externally threaded body proportioned for threadable receipt within the open end of the insert and having a cuplike recess disposed so as to be externally exposed upon receipt of said body within the insert; and, b. a volume of compressible material received within and substantially filling said recess.
Claim 7
Dependent Claim
77 words
An improved plug for use in combination with an anchoring insert of the type comprising a helical coil having at least one open end, said plug comprising: a. an externally threaded body proportioned for threadable receipt within the open end of the insert and having a cuplike recess disposed so as to be externally exposed upon receipt of said body within the insert; and, b. a volume of compressible material received within and substantially filling said recess.
Claim 8
Dependent Claim
45 words
An improved plug according to claim 5 further comprising an abutment disposed on the body for abutting engagement with the terminal end of the helical coil at the open end thereof to limit the extent to which the body may be threaded into the insert.
Claim 9
Dependent Claim
45 words
An improved plug according to claim 6 further comprising a helical shoulder on the body proportioned for engagement with the outermost helix of the insert upon receipt of the body in the insert and wherein said abutment comprises an abrupt steplike surface on said shoulder.
Claim 10
Dependent Claim
23 words
An improved plug according to claim 5 further comprising wrench engageable means on the body to facilitate the turning thereof within the insert.
Claim 11
Dependent Claim
97 words
An improved plug for use in combination with an anchoring insert of the type comprising an open-ended helical coil designed to be set in place within a body of concrete to provide for the threading of a bolt or the like into the body, said plug comprising: a. a body proportioned for snug receipt within one end of the insert; and, b. a cup secured to and disposed at one end of said body to provide a void at the end of the insert in which the body is received into which the body may be displaced.
Claim 12
Dependent Claim
97 words
An improved plug for use in combination with an anchoring insert of the type comprising an open-ended helical coil designed to be set in place within a body of concrete to provide for the threading of a bolt or the like into the body, said plug comprising: a. a body proportioned for snug receipt within one end of the insert; and, b. a cup secured to and disposed at one end of said body to provide a void at the end of the insert in which the body is received into which the body may be displaced.
Claim 13
Dependent Claim
40 words
An improved plug according to claim 9 wherein: a. the plug is provided with an extension disposed to extend generally axially from the insert upon receipt of the plug therein; b. the cup is secured to and over said extension.
Claim 14
Dependent Claim
47 words
An improved plug according to claim 10 wherein the cup is secured to and over the extension by mutually engaged detent means disposed, respectively, internally of the cup and externally of the extension, said means being disengageable responsive to the displacement of the extension into the cup.
Claim 15
Dependent Claim
37 words
An improved plug according to claim 9 wherein the extension and cup each have an external cross section greater than the internal cross section of the insert and less than the external cross section of the insert.
Claim 16
Dependent Claim
97 words
An improved plug for use in combination with an anchoring insert of the type comprising an open-ended helical coil designed to be set in a body of concrete to provide for the threading of a bolt or the like into the body, said plug comprising: a. an externally threaded body proportioned for threadable receipt within one end of the insert; and, b. a cup secured to and disposed to one end of said body to provide a void to the end of the insert in which the body is received into which the body may be displaced.
Claim 17
Dependent Claim
97 words
An improved plug for use in combination with an anchoring insert of the type comprising an open-ended helical coil designed to be set in a body of concrete to provide for the threading of a bolt or the like into the body, said plug comprising: a. an externally threaded body proportioned for threadable receipt within one end of the insert; and, b. a cup secured to and disposed to one end of said body to provide a void to the end of the insert in which the body is received into which the body may be displaced.
Claim 18
Dependent Claim
50 words
An improved plug according to claim 13 further comprising an abutment disposed on the body for abutting engagement with the terminal end of the helical coil at the end thereof in which the body is received to limit the extent to which the body may be threaded into the insert.
Claim 19
Dependent Claim
45 words
An improved plug according to claim 14 further comprising a helical shoulder on tHe body proportioned for engagement with the outermost helix of the insert upon receipt of the body in the insert and wherein said abutment comprises an abrupt steplike surface on said shoulder.
Claim 20
Dependent Claim
23 words
An improved plug according to claim 13 further comprising wrench engageable means on the body to facilitate the turning thereof within the insert.
References Cited (Backward Citations)
US1143429A
Cited
US1365718A
Cited
US2497928A
Cited
US2859840A
Cited
US2880608A
Cited
US3153490A
Cited
US3216171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |