US4186162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a platen core
Assignee: Individual
•
Filing: 1978-04-14
•
Granted: 1980-01-29
•
Expires: 1998-04-14
Abstract
Abstract A method of making a business machine platen core wherein a cylindrical body including a hollow tube extending co-axially thereof is encapsulated with an insulative foam with a pair of opposed plugs inserted in each end thereof.
Inventors
- 👤 Thomas G. Daley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/18; B41; B41J; B41J11/00; B41J11/02; B41J11/04; B41J11/053; F; F16; F16C; F16C13/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A method for making a business machine platen core including the steps of: (a) inserting one end of an elongated rod into a centrally disposed opening of a first collar; (b) placing a tubular member onto said rod; (c) inserting said first collar, rod, and tubular member into one end of a cylindrical housing having openings in each end thereof; (d) inserting a first plug into said one end forcing said collar a preselected distance into said cylindrical member; (e) adding a foamable thermosetting resin reaction mixture to said cylindrical member, said mixture being added between the outer walls of said tubular member and the inner walls of said cylindrical member; (f) adding a second collar having a centrally disposed opening therein to the opposite end of said cylindrical member, said opening in said second collar receiving the opposite end of said elongated rod; (g) inserting a second plug into said opposite end of said cylindrical member forcing said collar a preselected distace into said cylindrical member; (h) foaming and curing said mixture; and , (i) removing said plugs and rod from said cylindrical member.
Claim 2
Independent Claim
185 words
A method for making a business machine platen core including the steps of: (a) inserting one end of an elongated rod into a centrally disposed opening of a first collar; (b) placing a tubular member onto said rod; (c) inserting said first collar, rod, and tubular member into one end of a cylindrical housing having openings in each end thereof; (d) inserting a first plug into said one end forcing said collar a preselected distance into said cylindrical member; (e) adding a foamable thermosetting resin reaction mixture to said cylindrical member, said mixture being added between the outer walls of said tubular member and the inner walls of said cylindrical member; (f) adding a second collar having a centrally disposed opening therein to the opposite end of said cylindrical member, said opening in said second collar receiving the opposite end of said elongated rod; (g) inserting a second plug into said opposite end of said cylindrical member forcing said collar a preselected distace into said cylindrical member; (h) foaming and curing said mixture; and , (i) removing said plugs and rod from said cylindrical member.
Claim 3
Dependent Claim
26 words
The method of claim 1, said curing of said mixture includes heating said mix to foam about 45° to 60° C. for 1 to 4 minutes.
Claim 4
Dependent Claim
67 words
The method of claim 1 wherein said mixture is a formable polyurethane resin reaction mixture; and, said plugs are provided with two sections, a first section configured for being received within said cylindrical member and a second section configured for abutting the ends of said cylindrical member, said first section having a preselected length equal to the preselected distance said collars are forced into said cylindrical member.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said tubular member is heated prior to the addition of said mixture.
Claim 6
Dependent Claim
21 words
The method of claim 4 wherein said tubular member is heated to approximately the temperature at which said mixture is added.
References Cited (Backward Citations)
US583804A
Cited
US620286A
Cited
US1555389A
Cited
US1906738A
Cited
US2145320A
Cited
US2979779A
Cited
US3011843A
Cited
US3267484A
Cited
US3377949A
Cited
GB1249422A
Cited
US3693544A
Cited
US3978181A
Cited
US4121521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |