Patent US3602274A successfully refreshed from Google Patents.
US3602274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller nose for chain saw cutter bar
Assignee: EUROCLEAN CANADA Inc
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Filing: 1969-05-20
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Granted: 1971-08-31
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Expires: 1989-05-20
Abstract
Abstract Disclosed herein is a nose roller for the cutter bar of a chain saw. The nose roller is an assembly of two annular or washershaped sideplates, a mounting tongue, a plurality of roller bearings, and an annular fastening member. The fastening member has two out-turned deformable lips or flanges which are pressed over the sideplates to assemble the nose roller components. The fastening member also has a radial extension with a peripheral surface which forms the inner race for the roller bearings. The outer race for the bearings is in an interior annular wall surface in an aperture in the mounting tongue.
Inventors
- 👤 Frederick R Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:45
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/02; B27B17/04; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8878; Y10T83/8881; Y10T83/8883
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A nose roller for the cutter bar of a chain saw, said nose roller comprising a pair of circular nose roller sideplates each having therein an aperture, a bearing, a mounting tongue having a wall portion with an annular internal surface which defines an outer race for said bearing and means adapted for connection to the cutter bar, and a ring member located between said sideplates and within said annular internal surface of said mounting tongue, said member having two extending flange portions received in said apertures and secured to said sideplates so as to locate said sideplates in spaced relation on opposed sides of said mounting tongue with a gap between said sideplates to receive the drive members of a cutting chain and so as to prevent disassembly of said sideplates from said tongue, said member also having a surface defining an inner race supporting said bearing in engagement with said annular internal surface of said tongue so as to afford rotation of said sideplates relative to said tongue.
Claim 2
Dependent Claim
170 words
A nose roller for the cutter bar of a chain saw, said nose roller comprising a pair of circular nose roller sideplates each having therein an aperture, a bearing, a mounting tongue having a wall portion with an annular internal surface which defines an outer race for said bearing and means adapted for connection to the cutter bar, and a ring member located between said sideplates and within said annular internal surface of said mounting tongue, said member having two extending flange portions received in said apertures and secured to said sideplates so as to locate said sideplates in spaced relation on opposed sides of said mounting tongue with a gap between said sideplates to receive the drive members of a cutting chain and so as to prevent disassembly of said sideplates from said tongue, said member also having a surface defining an inner race supporting said bearing in engagement with said annular internal surface of said tongue so as to afford rotation of said sideplates relative to said tongue.
Claim 3
Dependent Claim
50 words
A nose roller in accordance with claim 1, wherein said ring member also has a radial annular extension which projects from said flange portions, said extension having an axial thickness greater than the thickness of said tongue and a cylindrical peripheral surface which defines an inner race for said bearing.
Claim 4
Dependent Claim
29 words
A nose roller in accordance with claim 2 wherein said flange portions are deformable and said apertures in said sideplates have chamfered margins which receive said deformable flange portions.
Claim 5
Dependent Claim
168 words
A chain saw comprising a pair of circular nose roller sideplates, each of said sideplates having an aperture, a bearing, a mounting tongue having a wall portion with an annular internal surface supporting said bearing, and a ring member located within said annular internal surface of said mounting tongue and including portions received in said sideplate apertures and secured to said sideplates so as to locate said sideplates in spaced relation on opposed sides of said mounting tongue to form a gap between said sideplates to receive the drive members of a cutting chain and for preventing disassembly of said sideplates from said tongue, said member also having a surface supporting said bearing in engagement with said annular internal surface of said tongue whereby to afford rotary movement of the assembly of said ring member and sideplates relative to said mounting tongue, a cutter bar including at the forward end thereof a recess receiving said mounting tongue, and means for securing said mounting tongue to said cutter bar.
Claim 6
Dependent Claim
168 words
A chain saw comprising a pair of circular nose roller sideplates, each of said sideplates having an aperture, a bearing, a mounting tongue having a wall portion with an annular internal surface supporting said bearing, and a ring member located within said annular internal surface of said mounting tongue and including portions received in said sideplate apertures and secured to said sideplates so as to locate said sideplates in spaced relation on opposed sides of said mounting tongue to form a gap between said sideplates to receive the drive members of a cutting chain and for preventing disassembly of said sideplates from said tongue, said member also having a surface supporting said bearing in engagement with said annular internal surface of said tongue whereby to afford rotary movement of the assembly of said ring member and sideplates relative to said mounting tongue, a cutter bar including at the forward end thereof a recess receiving said mounting tongue, and means for securing said mounting tongue to said cutter bar.
References Cited (Backward Citations)
US3198223A
Cited
US3263715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |