Patent US3595555A successfully refreshed from Google Patents.
US3595555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holder
Assignee: Individual
•
Filing: 1969-05-09
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Granted: 1971-07-27
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Expires: 1989-05-09
Abstract
Abstract A hydraulically actuated expanding flat holder for workpieces, tools, and the like which includes a holder body member formed to include a pressurized chamber area which has a slotted flat plate thereover and a pressure-responsive pad in the chamber area and next adjacent thereto that will cause and maintain deflection of the slotted area of the plate, out of its normal plane, without loss of the actuating pressure in the holder body chamber area.
Inventors
- 👤 Gordon N Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:59
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/061; B25B5/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
An expandable flat holder comprising a holder body, a flat plate mounted on said holder body with a fixed perimeter and having a central area slotted through to facilitate relative deflection out of the normal plane thereof, means defining a sealed fluid pressure chamBer area in said body member next adjacent the slotted area of said plate, said means including a fluid-pressure-responsive deflectable sealing pad covering the slotted area of said plate, sealing means provided circumferentially around said pad which is compressed and made operative in the mounting of said plate on said holder body, and means for establishing a fluid pressure condition in said chamber area for actuating said pad in deflecting engagement with the slotted central area of said plate.
Claim 2
Dependent Claim
122 words
An expandable flat holder comprising a holder body, a flat plate mounted on said holder body with a fixed perimeter and having a central area slotted through to facilitate relative deflection out of the normal plane thereof, means defining a sealed fluid pressure chamBer area in said body member next adjacent the slotted area of said plate, said means including a fluid-pressure-responsive deflectable sealing pad covering the slotted area of said plate, sealing means provided circumferentially around said pad which is compressed and made operative in the mounting of said plate on said holder body, and means for establishing a fluid pressure condition in said chamber area for actuating said pad in deflecting engagement with the slotted central area of said plate.
Claim 3
Dependent Claim
28 words
The holder of claim 1 wherein said chamber area includes a ledge for supporting and retaining said pad in close proximity to the slotted area of said plate.
Claim 4
Dependent Claim
61 words
The holder of claim 2 wherein a shoulder wall on said ledge provides an annular space beyond the peripheral edge of said pad as received on said ledge, and said sealing means is provided in said annular space on said ledge and compressed into sealing engagement with all next adjacent surfaces in the mounting of said plate on said holder body.
Claim 5
Dependent Claim
32 words
The holder of claim 3 wherein said pad is of relatively more flexible material than said plate so as to conform to the deflected contour of the slotted area of said plate.
Claim 6
Dependent Claim
56 words
The holder of claim 1 wherein said holder body includes a flat surface area having a shallow recess formed therein for providing said pressure chamber area, and said plate includes a peripheral area about said slotted center area for fastener attachment to the flat surface area of the holder body circumferentially about said chamber area recess.
Claim 7
Dependent Claim
35 words
The holder of claim 1 including, means fastened to said holder body and disposed in spaced and overhanging relation to the slotted central area of said plate for cooperation therewith in the deflected actuation thereof.
Claim 8
Dependent Claim
22 words
The holder of claim 6, wherein said overhanging means and said plate are fastened to said holder body by common fastener means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |