Patent US5277438A successfully refreshed from Google Patents.
US5277438A
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US
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Collapsible recuperating walker
Assignee: Individual
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Filing: 1993-01-05
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Granted: 1994-01-11
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Expires: 2013-01-05
Abstract
Abstract A collapsible recuperating walker having a seat frame and a standing frame is provided. The seat and standing frames are combined with bendable rods extending between the respective two side frames thereof. Each of the side frames are adjustable in height. The bendable rods are angularly displaced to collapse the walker to a smaller size for carrying and transportation. Casters are provided and are controlled to stop or to provide resistance, by means of brake units.
Inventors
- 👤 Ching P. Chuang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:39
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2003/046; A61H2201/00; A61H2201/01; A61H2201/0161; A61H2201/16; A61H2201/1602; A61H2201/1628; A61H2201/1633; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319; Y10T403/32327; Y10T403/32336
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
358 words
A collapsible recuperating walker comprising: a seat frame defined by a pair of first side frames coupled one to another by a first upper horizontal member and a first lower horizontal member extending therebetween; each of said first side frames having a lower portion defined by a first U-shaped tubular member and an upper portion defined by a first A-shaped tubular member, said first A-shaped tubular member including a pair of vertical legs telescopically received within respective vertical portions of said first U-shaped tubular member and releasably coupled therein for adjusting a height dimension of a respective first side frame; a standing frame defined by a pair of second side frames coupled one to another by a second upper horizontal member and a second lower horizontal member extending therebetween; each of said second side frames having a lower portion defined by a second U-shaped tubular member and an upper portion defined by a second A-shaped tubular member, said second A-shaped tubular member including a pair of vertical legs telescopically received within respective vertical portions of said second U-shaped tubular member and releasably coupled therein for adjusting a height dimension of a respective second side frame; and, double bendable coupling means for coupling said seat frame to said standing frame, said double bendable coupling means including at least a first rod member having a pair of longitudinally spaced first pivotal joints disposed intermediate opposing ends thereof, one of said opposing ends being coupled to a front portion of one of said first side frames and the other of said opposing ends being coupled to a rear portion of a respective second side frame, each of said first and second upper horizontal members having a second pivotal joint disposed intermediate opposing ends thereof, each of said first and second lower horizontal members having a third pivotal joint disposed intermediate opposing ends thereof, whereby each of said respective pairs of said first and second side frames are foldably displaceable each toward the other of a respective pair to form two folded pairs and each of said folded pairs being foldably displaceable one pair toward another about said double bendable coupling means.
Claim 2
Dependent Claim
358 words
A collapsible recuperating walker comprising: a seat frame defined by a pair of first side frames coupled one to another by a first upper horizontal member and a first lower horizontal member extending therebetween; each of said first side frames having a lower portion defined by a first U-shaped tubular member and an upper portion defined by a first A-shaped tubular member, said first A-shaped tubular member including a pair of vertical legs telescopically received within respective vertical portions of said first U-shaped tubular member and releasably coupled therein for adjusting a height dimension of a respective first side frame; a standing frame defined by a pair of second side frames coupled one to another by a second upper horizontal member and a second lower horizontal member extending therebetween; each of said second side frames having a lower portion defined by a second U-shaped tubular member and an upper portion defined by a second A-shaped tubular member, said second A-shaped tubular member including a pair of vertical legs telescopically received within respective vertical portions of said second U-shaped tubular member and releasably coupled therein for adjusting a height dimension of a respective second side frame; and, double bendable coupling means for coupling said seat frame to said standing frame, said double bendable coupling means including at least a first rod member having a pair of longitudinally spaced first pivotal joints disposed intermediate opposing ends thereof, one of said opposing ends being coupled to a front portion of one of said first side frames and the other of said opposing ends being coupled to a rear portion of a respective second side frame, each of said first and second upper horizontal members having a second pivotal joint disposed intermediate opposing ends thereof, each of said first and second lower horizontal members having a third pivotal joint disposed intermediate opposing ends thereof, whereby each of said respective pairs of said first and second side frames are foldably displaceable each toward the other of a respective pair to form two folded pairs and each of said folded pairs being foldably displaceable one pair toward another about said double bendable coupling means.
Claim 3
Dependent Claim
143 words
The collapsible recuperating walker as recited in claim 1 where said pair of vertical legs of each of said first and second A-shaped tubular members are each formed with a plurality of vertically spaced through openings, wherein said height adjustment of said respective first and second side frames is provided by selection of a particular vertically spaced through opening of each of said vertical legs of said first and second A-shaped tubular members for receipt of a fastener threadedly coupled through said respective vertical portions of said first and second U-shaped tubular members, each of said vertical portions of said first and second U-shaped tubular members having a spring disposed therein, said spring having one end disposed against a stopper secured within a respective vertical portion of a respective U-shaped tubular member for biasing a respective leg of a respective A-shaped tubular member.
Claim 4
Dependent Claim
147 words
The collapsible recuperating walker as recited in claim 1 where said second pivotal joint includes: a. a first female member having a longitudinally directed recess formed in one end thereof; b. a first male member having a plurality of radially displaced teeth formed on one end thereof, said first male member being pivotally coupled to said first female member with said teeth disposed within said recess; and, c. a spring biased rod member disposed within a bore formed in said end of said first female member, said bore opening into said recess and extending in a direction transverse thereto, said rod member having a projection formed thereon and extending into said recess for releasable engagement between a pair of said plurality of teeth, said projection being disengaged from between said pair of teeth responsive to a predetermined displacement of said rod member against a spring bias force.
Claim 5
Dependent Claim
160 words
The collapsible recuperating walker as recited in claim 1 where said third pivotal joint includes: a. a second female member having a longitudinally directed recess formed in one end thereof; b. a second male member having a plurality of radially displaced teeth formed on one end thereof, said second male member being pivotally coupled to said second female member with said teeth disposed within said recess of said second female member; and, c. detent means coupled to said second female member for releasable engagement with a respective recess formed between each of said plurality of teeth of said second male member, said detent means including (1) a ball member disposed within a substantially longitudinally directed bore formed in said second female member, and (2) a spring disposed within said bore formed in said second female member for biasing said ball member into engagement with a respective recess formed between each of said plurality of teeth of said second male member.
Claim 6
Dependent Claim
34 words
The collapsible recuperating walker as recited in claim 1 further comprising brake means coupled to said seat frame for applying resistance to rotation of a pair of casters resiliently mounted to said seat frame.
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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) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |