Patent US3756635A successfully refreshed from Google Patents.
US3756635A
Expired / Lapsed
US
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Improved apparatus for forming dowel-type joints
Assignee: Individual
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Filing: 1971-02-17
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Granted: 1973-09-04
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Expires: 1991-02-17
Abstract
Abstract Improved apparatus for forming dowel-type joints characterized by a tight frictional contact and a generally evenly distributed adhesive layer between the male-female interface wherein a predetermined amount of adhesive is discharged near the bottom or inner end of the female member from a containing medium as the male member is seated therein to be forced by the increased hydrostatic pressure existing at that time over the interface area. The containing medium may be an encapsulating shell which ruptures under the pressure applied thereto as the male member is seated, or the male member may itself contain the adhesive and act as a positive displacement pump as it is seated.
Inventors
- 👤 H Beers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:01
CPC Classifications
F; F16; F16B; F16B11/00; F16B11/006; F16B11/008; F16B12/00; F16B12/04; F16B12/10; F16B12/12; F16B12/24; A; A47; A47B; A47B2230/00; A47B2230/0029; A47B2230/0037; F16B5/00; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/472; Y10T403/55
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
189 words
For use in forming dowel-type joints in a part having a preformed dowel hole defined by sidewalls and an inner end, a dowel pin comprising the combination of a body portion having an outer surface configured such that when said pin is seated in said hole there is frictional contact between the outer surface of said body portion and the sidewalls of said hole over a substantial portion of the interface defined therebetween, said outer surface having a first component of a multi-component adhesive system coated thereon, an internal reservoir in said body portion holding a second component of said adhesive system, a path for fluid communication between said reservoir and said outer surface of said body portion, displacement means slidably mounted in said reservoir, and actuating means extending beyond said body portion and fixed to said displacement means, whereby said actuating means causes relative movement between said displacement means and said reservoir as said pin is seated in said hole, such that said second component of said adhesive system is forced from said reservoir for distribution and contact with said first component of adhesive over said outer surface.
Claim 2
Dependent Claim
189 words
For use in forming dowel-type joints in a part having a preformed dowel hole defined by sidewalls and an inner end, a dowel pin comprising the combination of a body portion having an outer surface configured such that when said pin is seated in said hole there is frictional contact between the outer surface of said body portion and the sidewalls of said hole over a substantial portion of the interface defined therebetween, said outer surface having a first component of a multi-component adhesive system coated thereon, an internal reservoir in said body portion holding a second component of said adhesive system, a path for fluid communication between said reservoir and said outer surface of said body portion, displacement means slidably mounted in said reservoir, and actuating means extending beyond said body portion and fixed to said displacement means, whereby said actuating means causes relative movement between said displacement means and said reservoir as said pin is seated in said hole, such that said second component of said adhesive system is forced from said reservoir for distribution and contact with said first component of adhesive over said outer surface.
Claim 3
Dependent Claim
29 words
The dowel pin of claim 1 wherein said displacement means is disposed in said path and is effective to prevent adhesive from being drawn from said reservoir by gravity.
Claim 4
Dependent Claim
16 words
The dowel pin of claim 2 wherein said actuating means is integral with said displacement means.
Claim 5
Dependent Claim
87 words
The dowel pin of claim 3 wherein said actuating means extends beyond the body portion of said pin a distance which is short relative to a predetermined depth of said dowel hole, whereby said actuating means bottoms against the inner end of said dowel hole only after a portion of said body portion is in contact with said sidewalls, whereby said joint is plugged prior to the adhesive being forceD from said reservoir such that adhesive is prevented from being drawn out of said joint by gravity.
Claim 6
Dependent Claim
121 words
An adhesive containing dowel pin for use in forming dowel-type joints, said pin comprising: a body portion having its outer surface coated with one component of a multi-component adhesive; a reservoir defined internally of said body portion containing a second component of adhesive; a path for fluid communication between said reservoir and one end of said body portion; and, a displacement means disposed in said path and slidable within the reservoir; whereby said components mix only after said second component has been displaced from said reservoir responsive to said dowel pin being inserted into a dowel hole, the bottom of which contacts said displacement means and drives it into said reservoir while said dowel pin is being inserted into said hole.
Claim 7
Dependent Claim
121 words
An adhesive containing dowel pin for use in forming dowel-type joints, said pin comprising: a body portion having its outer surface coated with one component of a multi-component adhesive; a reservoir defined internally of said body portion containing a second component of adhesive; a path for fluid communication between said reservoir and one end of said body portion; and, a displacement means disposed in said path and slidable within the reservoir; whereby said components mix only after said second component has been displaced from said reservoir responsive to said dowel pin being inserted into a dowel hole, the bottom of which contacts said displacement means and drives it into said reservoir while said dowel pin is being inserted into said hole.
Claim 8
Dependent Claim
31 words
The adhesive containing dowel pin of claim 5 wherein said displacement means has an interference fit with said reservoir to thereby prevent adhesive from being drawn from said reservoir by gravity.
Claim 9
Dependent Claim
50 words
The adhesive containing dowel pin of claim 6 wherein said displacement means initially extends beyond said one end of said body portion so as to be advanced into said reservoir as said dowel pin is seated within a dowel hole by bottoming against an inner end of said dowel hole.
Claim 10
Dependent Claim
63 words
The adhesive dowel pin of claim 5 wherein the adhesive contained by said reservoir is encapsulated by a wall material which ruptures as said displacement means is advanced into said reservoir, and said displacement means provides only a limited clearance for flow through said path whereby said adhesive is substantially filtered from said wall material as said adhesive is displaced from said reservoir.
Claim 11
Dependent Claim
158 words
An adhesive containing dowel pin for use in forming dowel-type joints, said dowel pin comprising the combination: a body portion; a reservoir defined internally of said body portion and containing a first component of an adhesive system; a path for fluid communication between said reservoir and one end of said body portion; a displacement means disposed in said path and slidable within said reservoir; whereby said first component of said adhesive system is displaced from said reservoir via said path as said displacement means is advanced into said reservoir; said displacement means including a second reservoir defined internally thereof and containing a second component of adhesive; a second path for fluid communication between said reservoirs; a second displacement means disposed in said first reservoir and second path, said second displacement means being slidable within said second reservoir whereby said second component of adhesive is displaced therefrom into said first reservoir as both of said displacement means are advanced.
Claim 12
Dependent Claim
158 words
An adhesive containing dowel pin for use in forming dowel-type joints, said dowel pin comprising the combination: a body portion; a reservoir defined internally of said body portion and containing a first component of an adhesive system; a path for fluid communication between said reservoir and one end of said body portion; a displacement means disposed in said path and slidable within said reservoir; whereby said first component of said adhesive system is displaced from said reservoir via said path as said displacement means is advanced into said reservoir; said displacement means including a second reservoir defined internally thereof and containing a second component of adhesive; a second path for fluid communication between said reservoirs; a second displacement means disposed in said first reservoir and second path, said second displacement means being slidable within said second reservoir whereby said second component of adhesive is displaced therefrom into said first reservoir as both of said displacement means are advanced.
Claim 13
Dependent Claim
28 words
An adhesive containing dowel pin as defined in claim 9 wherein said second displacement means is affixed to said body portion at the bottom of said first reservoir.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |