US4534135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine for watertight hatch lugs
Assignee: United States Department of the Navy
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Filing: 1984-02-09
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Granted: 1985-08-13
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Expires: 2004-02-09
Abstract
Abstract A machine is provided for in-situ grinding of tapered lugs on a hatch, suchs a hatch aboard a submarine. A base is provided and a device is attached to alternate lugs of the hatch for mounting the base across the hatch opening. An elongated plate is mounted at its center to the base for pivotal movement thereon. The pivotal plate has opposite ends wherein each end is extendable between a pair of alternate lugs, one of the lugs between one of the pair of lugs being a lug to be ground. A device is mounted on the base for oscillating the pivotal plate back and forth between the lugs of each pair of alternate lugs. A grinder is provided, and a device is utilized for mounting the grinder at one end of the pivotal plate for selectively engaging the grinder with or backing the grinder away from the lug to be ground. With this arrangement a lug can be ground by oscillating the pivotal plate and engaging the grinding means with the lug.
Inventors
- 👤 John F. Wilger
- 👤 Gregory S. Nakano
- 👤 Stephen Orillo, Jr.
- 👤 John R. Cazinha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:04
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A machine for insitu grinding tapered lugs on a hatch comprising: a base; means attached to alternate lugs for mounting the base across the hatch opening; an elongated plate mounted at its center to the base for pivotal movement thereon; the pivotal plate having opposite ends, each end of the pivotal plate being extendable between a pair of alternate lugs, one of the lugs between one of said pair of lugs being the lug to be ground; means mounted on the base for oscillating the pivotal plate back and forth between the lugs of each pair of alternate lugs; means for grinding; means mounting the grinding means at one end of the pivotal plate for selectively engaging the grinder with or backing the grinder away from the lug to be ground; whereby upon oscillating the pivotal plate and engaging the grinding means with the lug to be ground said lug can be ground.
Claim 2
Dependent Claim
153 words
A machine for insitu grinding tapered lugs on a hatch comprising: a base; means attached to alternate lugs for mounting the base across the hatch opening; an elongated plate mounted at its center to the base for pivotal movement thereon; the pivotal plate having opposite ends, each end of the pivotal plate being extendable between a pair of alternate lugs, one of the lugs between one of said pair of lugs being the lug to be ground; means mounted on the base for oscillating the pivotal plate back and forth between the lugs of each pair of alternate lugs; means for grinding; means mounting the grinding means at one end of the pivotal plate for selectively engaging the grinder with or backing the grinder away from the lug to be ground; whereby upon oscillating the pivotal plate and engaging the grinding means with the lug to be ground said lug can be ground.
Claim 3
Dependent Claim
125 words
A grinding machine as claimed in claim 1 wherein the oscillating means includes: the pivotal plate having a slot; a ring gear fixedly mounted on the base substantially parallel to the pivotal plate and opposite said slot; a drive gear rotatably mounted on the base in the center of the ring gear; a plate rotatably mounted on the base between the ring gear and the pivotal plate; a slide block mounted on the rotatable plate and extending into the slot of the pivotal plate; and planetary gears rotatably mounted on the rotatable plate with each planetary gear meshing with the drive gear and the ring gear, whereby upon rotation of the drive gear the slide block rotates in the slot to oscillate the pivotal plate.
Claim 4
Dependent Claim
46 words
A grinding machine as claimed in claim 1 including: a pair of arcuate bearings mounted on the base in opposite opposed positions with respect to one another; and the oscillating means having opposite arcuate ends with each end being slidably mounted in a respective arcuate bearing.
Claim 5
Dependent Claim
110 words
A grinding machine as claimed in claim 1 including: the base including: a ring extending about the hatch and extending inwardly thereof; and an elongated support plate releasably mounted on the inward extension of the ring and extending thereacross; the pivotal plate being pivotally mounted on the support plate and the oscillating means being mounted on the support plate; the base mounting means including a plurality of clamps, each clamp being threaded through the ring and bearing against a respective lug, whereby the ring can first be mounted to the hatch and then the support plate with the pivotal plate and the oscillating means can be mounted to the ring.
Claim 6
Dependent Claim
145 words
A grinding machine as claimed in claim 4 including: the grinding means including a motor with a grinding wheel fixed to the motor shaft; the mounting means for the grinding means including: a bearing and slide mounted on the pivotal plate with means for selectively moving the slide toward and away from the lug to be ground; a second bearing and slide mounted on the first mentioned bearing with means for selectively moving the slide perpendicular to the face of the lug to be ground; and an elongated holder fixed perpendicularly to the second bearing and holding the motor so that the axis of the grinding wheel is parallel to the face of the lug to be ground; the pivotal plate and the support plate each having an aperture; and the motor extending through the ring and the apertures in the pivotal and support plates.
Claim 7
Dependent Claim
121 words
A grinding machine as claimed in claim 5 including: the pivotal plate having a slot; a ring gear fixedly mounted on the base substantially parallel to the pivotal plate and opposite said slot; a drive gear rotatably mounted on the base in the center of the ring gear; a plate rotatably mounted on the base between the ring gear and the pivotal plate; a slide block mounted on the rotatable plate and extending into the slot of the pivotal plate; and planetary gears rotatably mounted on the rotatable plate with each planetary gear meshing with the drive gear and the ring gear, whereby upon rotation of the drive gear the slide block rotates in the slot to oscillate the pivotal plate.
Claim 8
Dependent Claim
46 words
A grinding machine as claimed in claim 6 including: a pair of arcuate bearings mounted on the base in opposite opposed positions with respect to one another; and the oscillating means having opposite arcuate ends with each end being slidably mounted in a respective arcuate bearing.
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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |