US4397491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable vacuum object handling device
Assignee: United States Department of Energy
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Filing: 1981-07-30
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Granted: 1983-08-09
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Expires: 2001-07-30
Abstract
Abstract The disclosure relates to a portable device adapted to handle objects which are not to be touched by hand. A piston and bore wall form a vacuum chamber communicating with an adaptor sealably engageable with an object to be lifted. The piston is manually moved and set to establish vacuum. A valve is manually actuatable to apply the vacuum to lift the object.
Inventors
- 👤 Gordon H. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:58
CPC Classifications
B; B25; B25B; B25B11/00; B25B11/005; B25B11/007; B65; B65G; B65G7/00; B65G7/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A hand held vacuum holding apparatus comprising: an elongated housing fittable in a user's hand comprising a generally cylindrical bore wall longitudinally disposed therein; a piston sealably and slidably engagable with said bore wall disposed therein; means for moving said piston reciprocally within said bore wall; means for locking said piston in at least one position; a piece engaging member communicating with said bore wall, said member comprising a conduit relatively small compared to said bore wall; valve means operably connected to said member for opening and sealing said conduit therein; a removable adapter sealably fittable with an object to be held communicating with said piece engaging member; a vacuum gauge communicating with said member for providing a reading of the vacuum present within said apparatus; and a radiation shield disposed about the housing for protecting a user's hand from radiation from an object being held.
Claim 2
Dependent Claim
146 words
A hand held vacuum holding apparatus comprising: an elongated housing fittable in a user's hand comprising a generally cylindrical bore wall longitudinally disposed therein; a piston sealably and slidably engagable with said bore wall disposed therein; means for moving said piston reciprocally within said bore wall; means for locking said piston in at least one position; a piece engaging member communicating with said bore wall, said member comprising a conduit relatively small compared to said bore wall; valve means operably connected to said member for opening and sealing said conduit therein; a removable adapter sealably fittable with an object to be held communicating with said piece engaging member; a vacuum gauge communicating with said member for providing a reading of the vacuum present within said apparatus; and a radiation shield disposed about the housing for protecting a user's hand from radiation from an object being held.
Claim 3
Dependent Claim
11 words
The invention of claim 1 wherein said radiation shield is removable.
Claim 4
Dependent Claim
12 words
The invention of claim 1 wherein said radiation shield is a disk.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |