US4078445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite sprocket or the like
Assignee: MARING ENTERPRISES Inc
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Filing: 1977-01-05
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Granted: 1978-03-14
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Expires: 1997-01-05
Abstract
Abstract An improved chain drive sprocket or the like in the form of a sprocket member. The composite sprocket member includes a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of the hub portion, and a toothed ring formed of synthetic resin material having an aperture formed therein with T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for close sliding coaxial engagement with the corresponding lands and grooves of the hub portion. The hub portion is preferably formed of sintered steel powder impregnated with cupreous alloy. The toothed ring portion is preferably formed of nylon. The drive sprocket may be employed in combination with the power output shaft from a motorcycle power transmission. The composite member may be slightly modified to form a composite spur gear or the like.
Inventors
- 👤 Cecil M. Kiser, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:12
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/30; Y; Y10; Y10S; Y10S474/00; Y10S474/902; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/4948; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907; Y10T74/19921
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
89 words
A composite toothed member or the like, having an axis of rotation, comprising: a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of said hub portion; and a toothed ring portion formed of a synthetic resin material having an aperture formed therethrough with T-shaped lands and T-shaped grooves formed on the inner periphery of the aperture sized and shaped for close sliding coaxial engagement with the corresponding T-shaped grooves and T-shaped lands of said hub portion.
Claim 2
Dependent Claim
89 words
A composite toothed member or the like, having an axis of rotation, comprising: a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of said hub portion; and a toothed ring portion formed of a synthetic resin material having an aperture formed therethrough with T-shaped lands and T-shaped grooves formed on the inner periphery of the aperture sized and shaped for close sliding coaxial engagement with the corresponding T-shaped grooves and T-shaped lands of said hub portion.
Claim 3
Dependent Claim
34 words
The composite toothed member as defined in claim 1 wherein said metallic hub portion is characterized further as being formed of sintered metal powder impregnated with a cupreous alloy for increasing the strength thereof.
Claim 4
Dependent Claim
22 words
The composite toothed member as defined in claim 2 wherein the sintered metal powder of said hub portion is an iron alloy.
Claim 5
Dependent Claim
16 words
The composite toothed member as defined in claim 3 wherein the sintered iron alloy is steel.
Claim 6
Dependent Claim
35 words
The composite toothed member as defined in claim 1 characterized further to include means formed on said toothed ring portion for engaging said hub portion to positively limit relative coaxial movement therebetween in one direction.
Claim 7
Dependent Claim
21 words
The composite toothed member as defined in claim 1 wherein the synthetic resin material forming said toothed ring portion is nylon.
Claim 8
Dependent Claim
25 words
The composite toothed member as defined in claim 1 wherein said hub portion includes an aperture formed therein coaxial with the axis of rotation thereof.
Claim 9
Dependent Claim
37 words
The composite toothed member as defined in claim 1 wherein said hub portion is characterized further to include means formed thereon for securing said hub portion to a rotatable member for mutual rotation about a common axis.
Claim 10
Dependent Claim
45 words
The composite toothed member as defined in claim 1 wherein said hub portion includes an aperture formed therein coaxial with the axis of rotation thereof and having at least one coaxial land end and at least one coaxial groove formed on the inner periphery thereof.
Claim 11
Dependent Claim
18 words
The composite toothed member as defined in claim 1 wherein said toothed ring portion is a chain sprocket.
Claim 12
Dependent Claim
26 words
The composite toothed member as defined in claim 1 wherein said toothed ring portion includes a plurality of gear teeth formed about the outer periphery thereof.
Claim 13
Dependent Claim
168 words
In combination with a wheeled vehicle of the type having a power output shaft driven by an engine through a power transmission system, a driven rear wheel journaled thereon and having a ring sprocket secured thereto, and an endless chain drivingly engaged with the ring sprocket, an improved drive sprocket comprising: a metallic hub portion rigidly securable to the power output shaft for coaxial rotation therewith, said hub portion having a plurality of T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation; and a ring portion secured to the outer periphery of said metallic hub, said ring portion being formed of a synthetic resin material having an aperture formed therein with a plurality of T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for closed sliding coaxial mutual engagement with the corresponding T-shaped grooves and T-shaped lands of said hub portion, and having teeth formed about the outer periphery thereof drivingly engaging the endless chain.
Claim 14
Dependent Claim
168 words
In combination with a wheeled vehicle of the type having a power output shaft driven by an engine through a power transmission system, a driven rear wheel journaled thereon and having a ring sprocket secured thereto, and an endless chain drivingly engaged with the ring sprocket, an improved drive sprocket comprising: a metallic hub portion rigidly securable to the power output shaft for coaxial rotation therewith, said hub portion having a plurality of T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation; and a ring portion secured to the outer periphery of said metallic hub, said ring portion being formed of a synthetic resin material having an aperture formed therein with a plurality of T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for closed sliding coaxial mutual engagement with the corresponding T-shaped grooves and T-shaped lands of said hub portion, and having teeth formed about the outer periphery thereof drivingly engaging the endless chain.
Claim 15
Dependent Claim
28 words
The apparatus as defined in claim 12 wherein said metallic hub portion is characterized further as being formed of a sintered metal powder impregnated with a cupreous alloy.
Claim 16
Dependent Claim
20 words
The apparatus as defined in claim 13 wherein the sintered metal powder of said hub portion is an iron alloy.
Claim 17
Dependent Claim
14 words
The apparatus as defined in claim 14 wherein the sintered iron alloy is steel.
Claim 18
Dependent Claim
32 words
The apparatus as defined in claim 12 characterized further to include means formed on said ring portion for engaging said hub portion to positively limit relative coaxial movement therebetween in one direction.
Claim 19
Dependent Claim
18 words
The apparatus as defined in claim 12 wherein the synthetic resin material forming said ring portion is nylon.
Claim 20
Dependent Claim
49 words
The apparatus as defined in claim 12 wherein said means for removably securing said hub portion to the power output shaft includes an aperture formed therein sized to receive the power output shaft therethrough and means for preventing relative rotation between the power output shaft and said hub portion.
References Cited (Backward Citations)
US3651705A
Cited
US3839921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |