US4746248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchor bolt assembly
Assignee: EIDP Inc
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Filing: 1987-02-19
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Granted: 1988-05-24
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Expires: 2007-02-19
Abstract
Abstract An achor bolt assembly for securing a bolt in a bore hole is provided with supporting members for applying pressure against an area surrounding the mouth of the bore hole wherein contacting surfaces of the supporting members are provided with a coating of a latent lubricating material which becomes an active lubricant in response to heat generated as the bolt is rotated and tensioned in the bore hole.
Inventors
- 👤 Jack W. Lillis
- 👤 Ronald D. Unger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:11
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/0086; E21D20/00; E21D20/02; E21D20/025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing at least a portion of said bonding material in said bore hole upon rotation of said bolt, (c) support means engaged by said bolt for applying force against an area surrounding the mouth of said bore hole comprising first and second support members positioned on said bolt, said first member having a planar surface adjacent to said area and an opposing surface releaseably adhered to a contiguous surface of said second member by a latent lubricating material, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (d) means for tensioning said bolt in said bore hole as said bonding material sets to a hardened state.
Claim 2
Dependent Claim
142 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing at least a portion of said bonding material in said bore hole upon rotation of said bolt, (c) support means engaged by said bolt for applying force against an area surrounding the mouth of said bore hole comprising first and second support members positioned on said bolt, said first member having a planar surface adjacent to said area and an opposing surface releaseably adhered to a contiguous surface of said second member by a latent lubricating material, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (d) means for tensioning said bolt in said bore hole as said bonding material sets to a hardened state.
Claim 3
Dependent Claim
130 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing at least a portion of said bonding material in said hole upon rotation of said bolt, (c) a support plate on said bolt in abutting relationship with an area surrounding said bore hole, (d) a second supporting member on said bolt having a planar surface adjacent to said support plate, said second supporting member having a latent lubricating material at least on the planar surface, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (e) means for tensioning said bolt in said bore hole as said bonding material sets to a hardened state.
Claim 4
Dependent Claim
130 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing at least a portion of said bonding material in said hole upon rotation of said bolt, (c) a support plate on said bolt in abutting relationship with an area surrounding said bore hole, (d) a second supporting member on said bolt having a planar surface adjacent to said support plate, said second supporting member having a latent lubricating material at least on the planar surface, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (e) means for tensioning said bolt in said bore hole as said bonding material sets to a hardened state.
Claim 5
Dependent Claim
15 words
The bolt assembly of claim 2 wherein said latent lubricating material is a hot-melt adhesive.
Claim 6
Dependent Claim
134 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing said bonding material in said hole upon rotation of said bolt, (c) a support plate on said bolt in abutting relationship with an area surrounding said bore hole, (d) first and second support members positioned on said bolt, said first member having a planar surface adjacent to said support plate and an opposing surface releaseably adhered to a contiguous surface of said second member by a latent lubricating material, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (e) means for tensioning said bolt in said bore hold as said bonding material sets to a hardened state.
Claim 7
Dependent Claim
134 words
A bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising in combination (a) an elongated bolt, (b) means for mixing said bonding material in said hole upon rotation of said bolt, (c) a support plate on said bolt in abutting relationship with an area surrounding said bore hole, (d) first and second support members positioned on said bolt, said first member having a planar surface adjacent to said support plate and an opposing surface releaseably adhered to a contiguous surface of said second member by a latent lubricating material, said lubricating material becoming an active lubricant in response to heat generated during rotation of said bolt, and (e) means for tensioning said bolt in said bore hold as said bonding material sets to a hardened state.
Claim 8
Dependent Claim
22 words
The bolt assembly of claim 4 wherein said first and second support members are adhered to each other with a hot-melt adhesive.
Claim 9
Dependent Claim
27 words
The bolt assembly of claim 4 wherein said bolt has a threaded portion on one end, said threaded portion having a coating of latent lubricating material thereon.
Claim 10
Dependent Claim
25 words
The bolt assembly of claim 6 wherein a section of the bolt adjacent to the threaded portion has a coating of latent lubricating material thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |