Patent US4077591A successfully refreshed from Google Patents.
US4077591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch machine for model railroads
Assignee: Individual
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Filing: 1977-06-30
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Granted: 1978-03-07
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Expires: 1997-06-30
Abstract
Abstract This machine consists primarily of a low R.P.M., motor driven cam and follower, the follower being pivotally secured to the top of a table, upon which the railroad tracks are secured. The machine includes an adjustable push rod, secured to one leg of the follower, which will intermittently connect and disconnect a section of track with another track.
Inventors
- 👤 Elmer C. Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:27
CPC Classifications
A; A63; A63H; A63H19/00; A63H19/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
An electric switch machine for model railroads, comprising a disc cam secured to a motor shaft, said disc cam having spaced apart pins on its face for opening and closing a micro-switch, and pin means on the outer periphery of said disc cam for pivoting a "U" shaped cam follower, and push-rod means secured to said cam follower, and to a fixed track member for intermittently engaging and disengaging a track from another track.
Claim 2
Dependent Claim
74 words
An electric switch machine for model railroads, comprising a disc cam secured to a motor shaft, said disc cam having spaced apart pins on its face for opening and closing a micro-switch, and pin means on the outer periphery of said disc cam for pivoting a "U" shaped cam follower, and push-rod means secured to said cam follower, and to a fixed track member for intermittently engaging and disengaging a track from another track.
Claim 3
Dependent Claim
124 words
The combination according to claim 1, wherein said disc cam is stationary on said motor shaft, and said motor is secured stationary, by suitable fasteners, to the underside of the table to which the model railroad tracks are secured, and said disc cam is disposed between the legs of said "U" shaped cam follower, said legs of said cam follower having shoulders on their inner side edges, said shoulders being in sliding engagement with said pin means on the outer periphery of said disc cam, and said disc cam, when rotating, imparts a rocking pivotal motion to said cam follower, and pin means is secured to one end of said cam follower, and is fixedly secured and projecting from the top of said table.
Claim 4
Dependent Claim
124 words
The combination according to claim 2, wherein said micro-switch is fixedly secured to the top of said table within the opening defined by said legs of said cam follower, the contacts of said micro-switch being opened and closed by the pins extending from the face of said disc cam, and a push-button starting switch is wired to one side of said motor and is wired at its other side, to said micro-switch, and said push-rod means is secured at one end to an opening in one leg of said cam follower and is secured at its other end, in one end of said fixed track member, and said cam follower, when pivoted by said disc cam, urges said push-rod outwards, thus moving said track.
Claim 5
Dependent Claim
31 words
The combination according to claim 3, wherein said fixed track member is secured across the end of the arcuate portion of said track that is movable by means of said push-rod.
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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |