Patent US4114874A successfully refreshed from Google Patents.
US4114874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Appliance for swimmers
Assignee: Individual
•
Filing: 1977-06-27
•
Granted: 1978-09-19
•
Expires: 1997-06-27
Abstract
Abstract A housing and a spool supported within the housing for rotation therein. A rope or like tension member wound on the spool and having at its free end a harness for engaging a swimmer's waist. A brake disc within the housing and a ratchet and pawl mechanism for coupling the spool and the disc only in the direction of rotation corresponding to unwinding the rope from the spool. A brake mechanism cooperable with the disc and being adjustable to apply a desired frictional force on the disc to retard the swimmer's movement through the water. A spring for retracting the rope onto the spool. L
Inventors
- 👤 Alvin J. Mattila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:52
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/151; A63B21/153; A63B21/00058; A63B21/00069; A63B21/012; A63B21/015; A63B21/16; A63B69/00; A63B69/12; Y; Y10; Y10S; Y10S254/00; Y10S254/12; Y10S273/00; Y10S273/21; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/2048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
378 words
An appliance for swimmers comprising a housing, means for fixing said housing adjacent a body of water, a shaft mounted in said housing, a spool disposed in said housing and supported for rotation on said shaft, said spool having a side surface substantially normal to said shaft, a flexible tension member wound on said spool and having a proximal end fixed to said spool and a distal end exterior of said housing, means for securing said distal end to the body of a swimmer in a body of water, means in said housing for rotatively biasing said spool in a first direction for winding said tension member thereon, a friction disc supported within said housing for rotation on said shaft, said disc having a first surface parallelly confronting said side surface and a second surface parallelly spaced from said first surface, decoupling means operatively connecting said spool side surface to said first disc surface so that said spool rotates independently of said disc in said first direction of rotation and engages said disc for rotation therewith in the opposite rotative direction, a brake assembly secured to said housing in flanking relation to the outer peripheral margin of said disc, said brake having first and second relatively movable surface defining portions for frictionally engaging respective said disc surfaces, said second surface defining portion of said brake being rigid with said housing, and means for adjustably compressing said surface portions toward one another and into frictional engagement with said disc surfaces so as to afford an adjustable force of friction between said brake assembly and said disc for retarding spool rotation in a direction opposite said first direction, said decoupling means including at least one pawl pivotally mounted to said side surface of said spool radially inward of said peripheral margin and disposed at an acute angle to said surface, means for biasing said pawl toward said first disc surface, said first disc surface defining a plurality of radially extending teeth projecting therefrom toward said side surface for cooperation with said pawl to engage said pawl in a direction opposite said first direction and rotate independently of said pawl in said first direction, said teeth being uniformly spaced around said friction disc and terminating radially inward of said peripheral margin.
Claim 2
Dependent Claim
378 words
An appliance for swimmers comprising a housing, means for fixing said housing adjacent a body of water, a shaft mounted in said housing, a spool disposed in said housing and supported for rotation on said shaft, said spool having a side surface substantially normal to said shaft, a flexible tension member wound on said spool and having a proximal end fixed to said spool and a distal end exterior of said housing, means for securing said distal end to the body of a swimmer in a body of water, means in said housing for rotatively biasing said spool in a first direction for winding said tension member thereon, a friction disc supported within said housing for rotation on said shaft, said disc having a first surface parallelly confronting said side surface and a second surface parallelly spaced from said first surface, decoupling means operatively connecting said spool side surface to said first disc surface so that said spool rotates independently of said disc in said first direction of rotation and engages said disc for rotation therewith in the opposite rotative direction, a brake assembly secured to said housing in flanking relation to the outer peripheral margin of said disc, said brake having first and second relatively movable surface defining portions for frictionally engaging respective said disc surfaces, said second surface defining portion of said brake being rigid with said housing, and means for adjustably compressing said surface portions toward one another and into frictional engagement with said disc surfaces so as to afford an adjustable force of friction between said brake assembly and said disc for retarding spool rotation in a direction opposite said first direction, said decoupling means including at least one pawl pivotally mounted to said side surface of said spool radially inward of said peripheral margin and disposed at an acute angle to said surface, means for biasing said pawl toward said first disc surface, said first disc surface defining a plurality of radially extending teeth projecting therefrom toward said side surface for cooperation with said pawl to engage said pawl in a direction opposite said first direction and rotate independently of said pawl in said first direction, said teeth being uniformly spaced around said friction disc and terminating radially inward of said peripheral margin.
References Cited (Backward Citations)
US518967A
Cited
US835985A
Cited
US2394523A
Cited
GB1078777A
Cited
US3929331A
Cited
FR2274322A1
Cited
US4007927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |