Patent US5203560A successfully refreshed from Google Patents.
US5203560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of a sound-producing PU-ball
Assignee: Individual
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Filing: 1992-01-28
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Granted: 1993-04-20
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Expires: 2012-01-28
Abstract
Abstract The production of a sound-producing polyurethane foamed ball is disclosed in which the sound producing hardware having a sound generating circuit connected to a battery set by a spring switch, is placed in a mold for producing a polyurethane foam ball in which the polyurethane covers the sound generator through a foaming process. The sound generating hardware is supported in the mold by a metal column extending into the mold cavity. The polyurethane ball thus made has an elongated sound hole for transmitting sounds from said sound generator to the outside.
Inventors
- 👤 Shyr-Yuh Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:47
CPC Classifications
A; A63; A63B; A63B43/00; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; A63B71/00; A63B71/06; A63B71/0619; A63B71/0622; A63B2071/0625; Y; Y10; Y10S; Y10S273/00; Y10S273/08; Y10T; Y10T29/00; Y10T29/49; Y10T29/4957; Y10T29/49712
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
127 words
A method of making a sound producing polyurethane ball in a mold comprising the steps of: a) extending a rod member from the mold into a mold cavity, b) removably supporting a sound generator on the rod member such that the sound generator is out of contact with the mold, said sound generator having a music integrated circuit, a speaker, a spring, and a battery set mounted thereon, c) placing a foamable polyurethane material into the mold cavity and causing the polyurethane material to undergo a foaming process such that the polyurethane material encloses the sound generator; and, d) removing the ball from the mold and withdrawing the rod member from the ball so as to leave a passage extending through the ball to the sound generator.
Claim 2
Independent Claim
127 words
A method of making a sound producing polyurethane ball in a mold comprising the steps of: a) extending a rod member from the mold into a mold cavity, b) removably supporting a sound generator on the rod member such that the sound generator is out of contact with the mold, said sound generator having a music integrated circuit, a speaker, a spring, and a battery set mounted thereon, c) placing a foamable polyurethane material into the mold cavity and causing the polyurethane material to undergo a foaming process such that the polyurethane material encloses the sound generator; and, d) removing the ball from the mold and withdrawing the rod member from the ball so as to leave a passage extending through the ball to the sound generator.
Claim 3
Dependent Claim
60 words
The method according to claim 1 further comprising the steps of: a) providing a speaker cover over the speaker, the speaker cover defining a sound hole therethrough and an annular flange extending around the sound hole; and, b) removably supporting the sound generator in the mold cavity by inserting the rod member into the sound hole in the speaker cover.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |