US4566924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fixing stud on workpiece
Assignee: Nifco Inc
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Filing: 1984-09-19
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Granted: 1986-01-28
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Expires: 2004-09-19
Abstract
Abstract Fixation of a stud on a workpiece is accomplished by depositing hotmelt adhesive agent on a fitting base of the stud, fastening the stud to a rotary tool, rotating the stud with the fitting base pressed against the workpiece and, after the adhesive agent has been activated to a prescribed extent by the heat of friction, stopping the rotation of the stud and pressing the fitting base against the workpiece.
Inventors
- 👤 Kunio Hara
- 👤 Toshie Tanaka
- 👤 Teruji Shibayama
- 👤 Minoru Morisaki
- 👤 Yoshio Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:18
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C65/069; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/72; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/342; B29C66/40; B29C66/47; B29C66/474; C; C09; C09J; C09J5/00; C09J5/06; B29C66/70; B29C66/71; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29L; B29L2031/00; B29L2031/727; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/3687
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
178 words
A method for fixing a first member upon a second member, comprising the steps of: depositing hot-melt adhesive upon one surface of said first member to be bonded to one surface of said second member; mounting said first member within a rotary tool for imparting relatively high-speed rotation to said first member; moving said one surface of said first member, and said hot-melt adhesive deposited thereon, toward said one surface of said second member so as to contact said one surface of said second member with said hot-melt adhesive; activating said rotary tool so as to rotate said first member and said hot-melt adhesive relative to said second member whereby only said hot-melt adhesive will be activated by means of the heat of friction generated between said hot-melt adhesive and said second member; and stopping the rotation of said rotary tool and said first member after said activation of said hot-melt adhesive has attained a predetermined degree whereby said first member is able to be securely bonded to said second member by means of said activated hot-melt adhesive.
Claim 2
Independent Claim
178 words
A method for fixing a first member upon a second member, comprising the steps of: depositing hot-melt adhesive upon one surface of said first member to be bonded to one surface of said second member; mounting said first member within a rotary tool for imparting relatively high-speed rotation to said first member; moving said one surface of said first member, and said hot-melt adhesive deposited thereon, toward said one surface of said second member so as to contact said one surface of said second member with said hot-melt adhesive; activating said rotary tool so as to rotate said first member and said hot-melt adhesive relative to said second member whereby only said hot-melt adhesive will be activated by means of the heat of friction generated between said hot-melt adhesive and said second member; and stopping the rotation of said rotary tool and said first member after said activation of said hot-melt adhesive has attained a predetermined degree whereby said first member is able to be securely bonded to said second member by means of said activated hot-melt adhesive.
Claim 3
Dependent Claim
27 words
A method according to claim 1, wherein said hotmelt adhesive agent is one member selected from the group consisting of polyamide type and olefin type adhesive agents.
Claim 4
Dependent Claim
14 words
A method according to claim 1, wherein said hotmelt adhesive agent contains glass fibers.
Claim 5
Dependent Claim
25 words
A method as set forth in claim 1, wherein: said second member comprises a workpiece fabricated from either metal, wood, fiber board, or plastic material.
Claim 6
Dependent Claim
36 words
A method as set forth in claim 1, wherein: said rotation of said rotary tool is stopped upon detection of a predetermined amount of torque generated as a result of said activation of said hot-melt adhesive.
Claim 7
Dependent Claim
52 words
A method as set forth in claim 1, wherein: said first member comprises a stud having a shank and a fitting base formed at one end of said shank; and said one surface of said first member upon which said hot-melt adhesive is deposited is an end surface of said fitting base.
Claim 8
Dependent Claim
41 words
A method according to claim 6, wherein a high-temperature type adhesive material is disposed in the outer circumferential part of the end surface of said fitting base and a low-temperature type adhesive material is disposed in the inner circumferential part thereof.
Claim 9
Dependent Claim
52 words
A method as set forth in claim 6, wherein: said fitting base is provided with a projection; and said rotation of said rotary tool is stopped upon breakage of said fitting base projection indicating the generation of a predetermined amount of torque as a result of said activation of said hot-melt adhesive.
Claim 10
Dependent Claim
33 words
A method according to claim 6, wherein said fitting base of said stud is provided with a recess on the end surface thereof and said hotmelt adhesive agent is deposited in said recess.
Claim 11
Dependent Claim
28 words
A method according to claim 9, wherein said shank of said stud is provided with a blind hollow part and said blind hollow part communicates with said recess.
Claim 12
Dependent Claim
28 words
A method according to claim 9, wherein said shank of said stud is provided with a through hollow part and said through hollow part communicates with said recess.
Claim 13
Independent Claim
171 words
A system for fixing a first member upon a second member, comprising: a first member fabricated from a first material; a second member fabricated from a second material; said first and second members each having a surface by which said first and second members are to be bonded together; hot melt adhesive means, disposed upon said surface of said first member, for bonding said surface of said first member to said surface of said second member; and means defined upon said first member for permitting said first member to be mounted within a rotary tool for rotating said first member, and said hot melt adhesive disposed thereon, at a relatively high rate of speed relative to said second member so as to generate frictional heat, as a result of said hot-melt adhesive being disposed in contact with said surface of said second member, for activating only said hot melt adhesive whereby said surfaces of said first and second members are able to be bonded together by said activated hot melt adhesive.
Claim 14
Independent Claim
171 words
A system for fixing a first member upon a second member, comprising: a first member fabricated from a first material; a second member fabricated from a second material; said first and second members each having a surface by which said first and second members are to be bonded together; hot melt adhesive means, disposed upon said surface of said first member, for bonding said surface of said first member to said surface of said second member; and means defined upon said first member for permitting said first member to be mounted within a rotary tool for rotating said first member, and said hot melt adhesive disposed thereon, at a relatively high rate of speed relative to said second member so as to generate frictional heat, as a result of said hot-melt adhesive being disposed in contact with said surface of said second member, for activating only said hot melt adhesive whereby said surfaces of said first and second members are able to be bonded together by said activated hot melt adhesive.
Claim 15
Dependent Claim
20 words
A system as set forth in claim 12, wherein: said materials comprising said first and second members are the same.
Claim 16
Dependent Claim
14 words
A system as set forth in claim 13, wherein: said same material is plastic.
Claim 17
Dependent Claim
32 words
A system as set forth in claim 12, wherein: said first member is fabricated from a plastic material; and said second member is fabricated from either metal, wood, fiberboard, or plastic material.
Claim 18
Dependent Claim
22 words
A system as set forth in claim 12, further comprising: recess means formed within said first member for housing said hot-melt adhesive.
Claim 19
Dependent Claim
41 words
A system as set forth in claim 16, further comprising: radially oriented slit means, defined within said first member portion forming said recess means, for pemitting the escape of air bubbles from said hot-melt adhesive as said hot-melt adhesive is activated.
Claim 20
Dependent Claim
75 words
A system as set forth in claim 16, further comprising: axially extending, peripherally defined abradable means for defining said recess means for said hot-melt adhesive within said first member for confining said hot-melt adhesive while said hot-melt adhesive is being activated yet being sufficiently abraded upon completion of said activation of said hot-melt adhesive so as to permit said first member surface to be bonded to said second member surface by said activated hot-melt adhesive.
Claim 21
Dependent Claim
26 words
A system as set forth in claim 12, wherein: said hot-melt adhesive is one member selected from the group consisting of polyamide and olefin type adhesives.
Claim 22
Dependent Claim
43 words
A system as set forth in claim 12, further comprising: frangible projection means disposed upon said first member for breakage by said rotary tool upon the development of a predetermined degree of torque as a result of said activation of said hot-melt adhesive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |