US4453910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable handrail splicing and repair apparatus
Assignee: Individual
•
Filing: 1983-10-07
•
Granted: 1984-06-12
•
Expires: 2003-10-07
Abstract
Abstract The present invention discloses portable apparatus for heating and molding flexible elastomeric handrails having internal core conforming to the internal surface of the handrail and a flexible sheet which can be fitted over the handrail and conforming to the external surface. The device has electrical heating elements which raise the temperature to the necessary vulcanizing or molding temperature.
Inventors
- 👤 Ronald H. Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:16
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/63; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C66/51; B29C66/52; B29C66/524; B29C66/5241; B29C66/70; B29C66/71; B29C66/80; B29C66/84; B29C66/861; E; E04; E04F; E04F11/00; E04F11/18; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/7394; B29C66/73941; B29C66/81; B29C66/818; B29C66/8182; B29C66/81821; B29C66/8187; B29C66/81871; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/08; B29L; B29L2031/00; B29L2031/001; B29L2031/003; B29L2031/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A portable apparatus for heating and molding flexible handrails having an internal surface configuration and a curved external surface configuration comprising; an elongated core having a cross-sectional shape conforming to the cross-sectional shape of the interior surface configuration of said handrail; means for heating said core to a desired temperature; an elongated outer cover comprising a flexible sheet detachably attachable to said core and adapted to conform to the curved cross-sectional shape of said external surface of said handrail; means for attaching said cover to said core and holding same in a configuration conforming substantially to the external shape of said handrail.
Claim 2
Dependent Claim
102 words
A portable apparatus for heating and molding flexible handrails having an internal surface configuration and a curved external surface configuration comprising; an elongated core having a cross-sectional shape conforming to the cross-sectional shape of the interior surface configuration of said handrail; means for heating said core to a desired temperature; an elongated outer cover comprising a flexible sheet detachably attachable to said core and adapted to conform to the curved cross-sectional shape of said external surface of said handrail; means for attaching said cover to said core and holding same in a configuration conforming substantially to the external shape of said handrail.
Claim 3
Dependent Claim
39 words
An apparatus as claimed in claim 1 in which said heating means comprises electrical cartridge heaters inserted in bore holes at spaced intervals in said core and wiring means adapted to connect said heaters to an electrical power source.
Claim 4
Dependent Claim
28 words
An apparatus as claimed in claim 1 in which said outer cover comprises a thin flexible sheet of steel having flanges running longitudinally along the lateral edges thereof.
Claim 5
Dependent Claim
45 words
An apparatus as claimed in claim 3 in which said means for attaching said sheet to said core includes a spacer positioned between said flanges, means to fasten said spacer to said core, and bolt means extending through openings in said flanges and said spacers.
Claim 6
Dependent Claim
30 words
An apparatus as claimed in claim 4 including an insulating block positioned between said core and said spacer and adapted to thermally and electrically insulate said spacer from said core.
Claim 7
Dependent Claim
29 words
An apparatus as claimed in claim 2 in which said wiring means includes a thermostat adapted to control the temperature of said core when heated by said heating means.
Claim 8
Dependent Claim
23 words
An apparatus as claimed in claim 5 in which said spacer has a handle mounted thereon by which said apparatus may be carried.
References Cited (Backward Citations)
US4347096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |