Patent US3897642A successfully refreshed from Google Patents.
US3897642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth working tip and adapter construction
Assignee: Caterpillar Inc
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Filing: 1974-05-13
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Granted: 1975-08-05
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Expires: 1994-05-13
Abstract
Abstract An earth working tip and adapter combination constructed with capacity to withstand great loading in use while utilizing a relatively small amount of unusable construction material such that when the tip is worn and replaced, valuable material is not discarded therewith. The tip member includes a pair of transversely disposed converging ribs formed internally of a closed cavity. The adapter member includes a pair of externally disposed converging tapered grooves adapted for mating engagement with the ribs of the tip member. In operative orientation, the respective load bearing surfaces of the ribs and grooves are disposed substantially normally to the direction of the working loads applied such that such loads are transmitted uniformally from the ripper tip to the adapter without bearing upon the pin holding means used to retain the tip upon the adapter.
Inventors
- 👤 Eugene L Helton
- 👤 Edward J Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:12
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2825
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
246 words
An earth working device comprising in combination, tip means for directly engaging material to be worked, adapter means for supporting said tip means, retainer means for retaining said tip means upon said adapter means, said adapter means including first and second load bearing edge surfaces and first and second side surfaces contiguous with said first and second edge surfaces, said first and second side surfaces being provided with first and second longitudinally extending load supporting groove means, each of said first and second groove means including a pair of upper and lower opposed sidewalls, said upper and lower sidewalls of each of said grooves converging toward one another from a distal portion of said adapter means to a proximal portion thereof at a first predetermined acute angle, said tip means including hollow cavity means having interiorly disposed longitudinally extending rib means adapted to supportingly engage said longitudinally extending groove means of said adapter means, said rib means including upper and lower surfaces adapted to directly engage said upper and lower sidewalls of said groove means, said upper and lower surfaces of said rib means diverging from a proximal portion of said tip means toward a distal portion thereof at a second acute angle different from said first predetermined angle, said adapter means further include a distally centrally disposed nose end surface, and wherein said tip means cavity means include a frontal abutment surface for directly engaging said adapter nose end surface in load transmitting relation thereto.
Claim 2
Dependent Claim
246 words
An earth working device comprising in combination, tip means for directly engaging material to be worked, adapter means for supporting said tip means, retainer means for retaining said tip means upon said adapter means, said adapter means including first and second load bearing edge surfaces and first and second side surfaces contiguous with said first and second edge surfaces, said first and second side surfaces being provided with first and second longitudinally extending load supporting groove means, each of said first and second groove means including a pair of upper and lower opposed sidewalls, said upper and lower sidewalls of each of said grooves converging toward one another from a distal portion of said adapter means to a proximal portion thereof at a first predetermined acute angle, said tip means including hollow cavity means having interiorly disposed longitudinally extending rib means adapted to supportingly engage said longitudinally extending groove means of said adapter means, said rib means including upper and lower surfaces adapted to directly engage said upper and lower sidewalls of said groove means, said upper and lower surfaces of said rib means diverging from a proximal portion of said tip means toward a distal portion thereof at a second acute angle different from said first predetermined angle, said adapter means further include a distally centrally disposed nose end surface, and wherein said tip means cavity means include a frontal abutment surface for directly engaging said adapter nose end surface in load transmitting relation thereto.
Claim 3
Dependent Claim
42 words
The invention of claim 1 wherein said adapter means further include a first transpiercing aperture means, said tip means further including second and third spaced-apart aperture means in operative alignment with said first transpiercing aperture means for receiving said retainer means therein.
Claim 4
Dependent Claim
32 words
The invention of claim 2 wherein said retainer means include a pin means and a spring fastening means for retaining said pin means positioned within said first, second, and third aperture means.
Claim 5
Dependent Claim
63 words
The invention of claim 3 wherein said converging sidewalls of said adapter means groove means and said upper and lower diverging surfaces of said rib means come into a tight zero tolerance fit in the vicinity of said pin means for direct transfer of load forces from said tip means to said adapter means without placing appreciable loading forces upon said pin means.
Claim 6
Dependent Claim
21 words
The invention of claim 1 wherein said adapter means and said tip means include relieved areas in non-loading bearing portions thereof.
Claim 7
Dependent Claim
243 words
An earthworking device comprising in combination, tip means for directly engaging material to be worked, boot means for supporting said tip means, adapter means for supporting said boot means, first and second retainer means for respectively retaining said tip means upon said boot means and said boot means upon said adapter means, said adapter means including first and second load bearing edge surfaces and first and second contiguous side surfaces, said first and second side surfaces being provided with first and second longitudinally extending groove means each including an upper and lower sidewall, said upPer and lower sidewalls converging toward one another from a distal portion of said adapter means toward a proximal portion thereof at a first predetermined angle, said boot means including hollow cavity means having interiorly disposed first and second longitudinally extending rib means for engaging said first and second groove means of said adapter means, and first and second rib means having upper and lower surfaces adapted to engage said upper and lower sidewalls, said upper and lower surfaces of said first and second rib means diverging from a proximal portion of said boot means toward a distal portion thereof at a second predetermined angle which is different from said first predetemined angle, said boot means further including third and fourth externally disposed groove means, said tip means including third and fourth internally formed rib means for supportingly engaging said third and fourth groove means of said boot means.
Claim 8
Dependent Claim
243 words
An earthworking device comprising in combination, tip means for directly engaging material to be worked, boot means for supporting said tip means, adapter means for supporting said boot means, first and second retainer means for respectively retaining said tip means upon said boot means and said boot means upon said adapter means, said adapter means including first and second load bearing edge surfaces and first and second contiguous side surfaces, said first and second side surfaces being provided with first and second longitudinally extending groove means each including an upper and lower sidewall, said upPer and lower sidewalls converging toward one another from a distal portion of said adapter means toward a proximal portion thereof at a first predetermined angle, said boot means including hollow cavity means having interiorly disposed first and second longitudinally extending rib means for engaging said first and second groove means of said adapter means, and first and second rib means having upper and lower surfaces adapted to engage said upper and lower sidewalls, said upper and lower surfaces of said first and second rib means diverging from a proximal portion of said boot means toward a distal portion thereof at a second predetermined angle which is different from said first predetemined angle, said boot means further including third and fourth externally disposed groove means, said tip means including third and fourth internally formed rib means for supportingly engaging said third and fourth groove means of said boot means.
Claim 9
Dependent Claim
45 words
The invention of claim 6 wherein said third and fourth groove means and said third and fourth rib means each include converging load-bearing surfaces, said converging surfaces of said grooves converging at an angle different from the angle of convergence of said rib means surfaces.
Claim 10
Dependent Claim
37 words
The invention of claim 7 wherein said first retainer means is located proximate a first point of zero tolerance between said first and second groove means of said adapter means and said first and second rib means.
Claim 11
Dependent Claim
41 words
The invention of claim 8 wherein said second retainer means is located proximate a second point of zero tolerance between said third and fourth groove means of said boot means and said third and fourth rib means of said tip means.
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |