US3754512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine spotting device
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1971-09-22
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Granted: 1973-08-28
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Expires: 1991-09-22
Abstract
Abstract A machine spotting device for accurately positioning a machine traveling over rails with respect to a preselected position along the rails comprises a plurality of indexing surfaces that are remote from and run along the length of the rails with an indexing surface corresponding to each position to which the machine is to be spotted, a conventional indexing cylinder for moving the machine a predetermined spaced distance from the indexing surface to the preselected position, an arm having one end pivotally mounted to the machine and having the indexing cylinder mounted to its other end, and another cylinder for moving the arm into operative association with the indexing surfaces.
Inventors
- 👤 A Kmety
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:35
CPC Classifications
C; C10; C10B; C10B31/00; C10B31/02; C10B31/04; B; B61; B61D; B61D7/00; B61D7/14; B61D7/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
Apparatus for positioning a machine travelling over rails on a supporting surface with respect to a preselected location along said rails comprising: a. plurality of protrusions on said surface, with each protrusion having opposite indexing and back-stop surfaces, said protrusions being separated by interdental spaces; and b. means for positioning in one of said interdental spaces that is related to said preselected location a device that engages the indexing surface of one protrusion as said machine moves in one direction along said rails and then, as a result of such engagements, said machine reversEs said direction of movement until said device engages the back-stop surface of an adjacent protrusion whereby said machine stops and is spotted at the preselected location.
Claim 2
Dependent Claim
120 words
Apparatus for positioning a machine travelling over rails on a supporting surface with respect to a preselected location along said rails comprising: a. plurality of protrusions on said surface, with each protrusion having opposite indexing and back-stop surfaces, said protrusions being separated by interdental spaces; and b. means for positioning in one of said interdental spaces that is related to said preselected location a device that engages the indexing surface of one protrusion as said machine moves in one direction along said rails and then, as a result of such engagements, said machine reversEs said direction of movement until said device engages the back-stop surface of an adjacent protrusion whereby said machine stops and is spotted at the preselected location.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein said device comprises a conventional cylinder having a plunger for engagement with said indexing surface.
Claim 4
Dependent Claim
44 words
The apparatus of claim 1 including: a. an arm pivotally mounted to said machine and carrying said device; and b. means for pivoting said arm whereby in one position said device engages said protrusions and in another position it avoids engagement with said protrusions.
Claim 5
Dependent Claim
144 words
Apparatus for positioning a machine travelling over rails on a supporting surface with respect to a preselected location along said rails comprising: a. a plurality of protrusions on said surface with each protrusion having opposite indexing and back-stop surfaces and with said protrusions separated by interdental spaces; b. an arm pivotally mounted to said machine and carrying a device that is engageable with said indexing surface on one protrusion as said machine moves in one direction along said rails and then as a result of such engagement said machine reverses said direction of movement until said device engages said back-stop surface of an adjacent protrusion whereby said machine stops and is spotted at the preselected location; and c. means for pivoting said arm whereby in one position said device is engageable with said surfaces and in another position said device is not engageable therewith.
Claim 6
Dependent Claim
144 words
Apparatus for positioning a machine travelling over rails on a supporting surface with respect to a preselected location along said rails comprising: a. a plurality of protrusions on said surface with each protrusion having opposite indexing and back-stop surfaces and with said protrusions separated by interdental spaces; b. an arm pivotally mounted to said machine and carrying a device that is engageable with said indexing surface on one protrusion as said machine moves in one direction along said rails and then as a result of such engagement said machine reverses said direction of movement until said device engages said back-stop surface of an adjacent protrusion whereby said machine stops and is spotted at the preselected location; and c. means for pivoting said arm whereby in one position said device is engageable with said surfaces and in another position said device is not engageable therewith.
Claim 7
Dependent Claim
42 words
The apparatus of claim 4 wherein: a. said device includes a cylinder and piston assembly; and said aparatus includes b. limit switches that coact with said arm as it pivots and stops said pivoting when said arm is at a preselected location.
References Cited (Backward Citations)
GB106627A
Cited
US3124736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |