US4149531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller-type massager
Assignee: MARUTAKA IRYOKI CO Ltd
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Filing: 1977-10-26
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Granted: 1979-04-17
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Expires: 1997-10-26
Abstract
Abstract A roller-type massager having a pair of massage rollers rotatably mounted on a horizontal axle in parallel and spaced from each other within a chair back are vertically reciprocated along the spinal column. The horizontal axle is mounted on a screw housing and supported at both ends by a pair of guide rollers which are guided along a pair of vertical rails fixedly mounted within the chair back. The screw housing has a vertical through female screw threadably connecting with a vertical elongated screw bar which is rotatably mounted between the vertical rails and driven by a motor through a V-belt and pulleys transmission.
Inventors
- 👤 Yuugi Tanaka
- 👤 Katsutoshi Toyoshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:16
CPC Classifications
A; A61; A61H; A61H15/00; A61H15/0078; A61H2015/0007; A61H2015/0014; A61H2015/0028; A61H2201/00; A61H2201/01; A61H2201/0119; A61H2201/0138; A61H2201/0149; A61H2201/16; A61H2201/1602; A61H2201/1654; A61H2201/1657; A61H2201/1664; A61H2201/1669; A61H2201/50; A61H2201/5058; A61H2201/5064; A61H2201/5066; A61H2205/00; A61H2205/08; A61H2205/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A roller-type massager built into a chair back comprising; a pair of guide rails fixedly mounted within said chair back, an elongated screw bar rotatably mounted along said guide rails, a motor rotatably driving said screw bar, a screw housing having a through-female screw threadably connecting with said screw bar and thereby driven along said screw bar, a horizontal axle mounted on said screw housing, a pair of massage rollers rotatably carried by said horizontal axle, and a pair of guide rollers rotatably carried by said horizontal axle and contacting said guide rails for supporting said massage rollers against the outer pressure caused by massage action.
Claim 2
Dependent Claim
106 words
A roller-type massager built into a chair back comprising; a pair of guide rails fixedly mounted within said chair back, an elongated screw bar rotatably mounted along said guide rails, a motor rotatably driving said screw bar, a screw housing having a through-female screw threadably connecting with said screw bar and thereby driven along said screw bar, a horizontal axle mounted on said screw housing, a pair of massage rollers rotatably carried by said horizontal axle, and a pair of guide rollers rotatably carried by said horizontal axle and contacting said guide rails for supporting said massage rollers against the outer pressure caused by massage action.
References Cited (Backward Citations)
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Cited
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |