Patent US4014540A successfully refreshed from Google Patents.
US4014540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing mount for playground equipment
Assignee: Game Time Inc
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Filing: 1975-03-31
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Granted: 1977-03-29
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Expires: 1995-03-31
Abstract
Abstract A ball and socket joint for a swing for providing simultaneous swiveling and pivoting motion in any direction. The ball is preferably molded with an inner core and an outer shell of different colored materials. As material from the outer shell is worn away in normal wear, exposure of the inner core indicates visually the extent of wear which has taken place. A retainer member placed in load bearing relationship between a support bolt for the swing and the ball is intentionally made larger than the opening at the base of the socket to prevent the swing from dropping in case of breakage of the ball.
Inventors
- 👤 Ted L. Caulkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:49
CPC Classifications
A; A63; A63G; A63G9/00; A63G9/12; F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0604; F16C11/0609; F16C2316/00; F16C2316/30; Y; Y10; Y10T; Y10T403/00; Y10T403/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
206 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket having an aperture therein, said socket having an inner portion shaped substantially as a portion of the inner surface of a hollow sphere; b. means for attaching said member to a swing support frame; c. A ball positioned within the socket, said ball having a portion of its surface comprising a segment of a sphere, said segment having a shape and size to conform to said inner portion of said socket, and another portion thereof generally planar and positioned away from said aperture, said ball having a bore therethrough along an axis generally perpendicular to said generally planar side; d. a load supporting bolt positioned within said bore having its head adjacent said generally planar side and its opposite and extending through said aperture in the socket, said opposite end being adapted for attachment to a playground swing; and e. a retainer member, having a bore therein and positioned along said bolt between the head of said bolt and said generally planar side of said ball, said retainer member being dimensioned larger than said aperture to prevent said bolt from dropping through said aperture in case of breakage of the ball.
Claim 2
Dependent Claim
206 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket having an aperture therein, said socket having an inner portion shaped substantially as a portion of the inner surface of a hollow sphere; b. means for attaching said member to a swing support frame; c. A ball positioned within the socket, said ball having a portion of its surface comprising a segment of a sphere, said segment having a shape and size to conform to said inner portion of said socket, and another portion thereof generally planar and positioned away from said aperture, said ball having a bore therethrough along an axis generally perpendicular to said generally planar side; d. a load supporting bolt positioned within said bore having its head adjacent said generally planar side and its opposite and extending through said aperture in the socket, said opposite end being adapted for attachment to a playground swing; and e. a retainer member, having a bore therein and positioned along said bolt between the head of said bolt and said generally planar side of said ball, said retainer member being dimensioned larger than said aperture to prevent said bolt from dropping through said aperture in case of breakage of the ball.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 wherein said retainer member comprises a washer having a diameter greater than said aperture.
Claim 4
Dependent Claim
38 words
Apparatus according to claim 1 wherein said ball has an inner core and an outer shell molded therearound, and wherein said core and shell are made of materials having different colors, so as to provide visual wear indication.
Claim 5
Dependent Claim
83 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket, said socket having an aperture formed therein; b. a ball positioned within said socket; and c. a load support member attached in load bearing relationship to said ball and extending through said aperture for swiveling and limited angular movement therein; d. wherein said ball comprises an inner core and an outer shell made of materials having different visual appearance, thereby to provide visual wear indication for said ball.
Claim 6
Dependent Claim
83 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket, said socket having an aperture formed therein; b. a ball positioned within said socket; and c. a load support member attached in load bearing relationship to said ball and extending through said aperture for swiveling and limited angular movement therein; d. wherein said ball comprises an inner core and an outer shell made of materials having different visual appearance, thereby to provide visual wear indication for said ball.
Claim 7
Dependent Claim
124 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket, said socket having an aperture formed therein; b. a ball positioned within said socket, said ball comprising an inner core and an outer shell made of materials having a different visual appearance, thereby to provide visual wear indication for said ball; c. a load support member attached in load bearing relationship to said ball and extending through said aperture for swiveling and limited angular movement therein; and d. a retainer member positioned within said socket to attach said ball to said load support member, said retainer member being dimensioned larger than said aperture to provide support for said load support member in the event of failure of said ball.
Claim 8
Dependent Claim
124 words
A ball and socket playground swing suspension mount, comprising: a. a member defining a socket, said socket having an aperture formed therein; b. a ball positioned within said socket, said ball comprising an inner core and an outer shell made of materials having a different visual appearance, thereby to provide visual wear indication for said ball; c. a load support member attached in load bearing relationship to said ball and extending through said aperture for swiveling and limited angular movement therein; and d. a retainer member positioned within said socket to attach said ball to said load support member, said retainer member being dimensioned larger than said aperture to provide support for said load support member in the event of failure of said ball.
Claim 9
Dependent Claim
73 words
Apparatus according to claim 5 wherein said ball has a bore therethrough, said load support member extends through said bore and one end thereof extends through said aperture, said one end being adapted for attachment to a swing; and said retainer member comprises a washer of diameter larger than that of said aperture captivated between the opposite end of said load support member and said ball for transfer of load bearing forces therebetween.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |