US4132519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled porosity of uncured reinforced thermo-setting plastic material
Assignee: Rohr Inc
•
Filing: 1977-10-28
•
Granted: 1979-01-02
•
Expires: 1997-10-28
Abstract
Abstract The creation of controlled hole sizes and locations in uncured reinforced thermo setting plastic material by mechanically perforating the uncured material and "B" staging the material surrounding the perforation by sonic vibration of the mechanical perforating device.
Inventors
- 👤 Clyde H. Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:11
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/81811; B26; B26D; B26D7/00; B26D7/08; B26D7/086; B26F; B26F1/00; B26F1/24; B29C65/00; B29C65/02; B29C65/08; B29C66/70; B29C66/73; B29C66/737; B29C66/7375; B29C66/73753; B29C66/73754; B29C66/739; B29C66/7394; B29C66/73941; B29C66/814; B29C66/8141; B29C66/81433; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91212; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29C2793/00; B29C2793/0045; B29C66/96; B29C66/961; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24802; Y10T428/24826; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/97
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
An apparatus for perforating and partially curing in a selected area a sheet of uncured unperforate thermoplastic material comprising: a base member; a plurality of pins carried by said base member; a platform member having a resilient surface adjacent said base member; means for providing relative movement of said members between a first position wherein they are spaced apart and a second position wherein said material is positioned between said members, said pins penetrate said material and engage said resilient surface; sonic means associated with said base member for vibrating said base member during penetration of said material for providing an elevated pin temperature for partially curing said material adjacent to said pin to prevent the uncured plastic material from flowing into and closing the perforations when said pins are withdrawn; and cooling means for maintaining the temperature of said pins at a level just sufficient to partially cure said material adjacent said pins.
Claim 2
Independent Claim
154 words
An apparatus for perforating and partially curing in a selected area a sheet of uncured unperforate thermoplastic material comprising: a base member; a plurality of pins carried by said base member; a platform member having a resilient surface adjacent said base member; means for providing relative movement of said members between a first position wherein they are spaced apart and a second position wherein said material is positioned between said members, said pins penetrate said material and engage said resilient surface; sonic means associated with said base member for vibrating said base member during penetration of said material for providing an elevated pin temperature for partially curing said material adjacent to said pin to prevent the uncured plastic material from flowing into and closing the perforations when said pins are withdrawn; and cooling means for maintaining the temperature of said pins at a level just sufficient to partially cure said material adjacent said pins.
Claim 3
Dependent Claim
26 words
The invention as defined in claim 1, wherein said cooling means comprises a pump and radiator working in a closed fluid system with a hollow-base member.
References Cited (Backward Citations)
US3468203A
Cited
US3719736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |