Patent US5324688A successfully refreshed from Google Patents.
Patent US5199452A successfully refreshed from Google Patents.
US5199452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental flossing arrangement and method
Assignee: Individual
•
Filing: 1992-06-19
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Granted: 1993-04-06
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Expires: 2012-06-19
Abstract
Abstract A supply of dental floss is wound on a supply reel turnably mounted in one housing, while another housing mounts a take-up reel for receiving spent floss. The housings are held in opposite hands of a user with the floss extending therebetween. During flossing, a dispensed length of floss is held taut by fixedly anchoring the dispensed floss within the housings. After flossing, the dispensed floss is wound on the take-up reel for easy disposal.
Inventors
- 👤 Peter S. C. Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:46
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/04; A61C15/043; A61C15/046
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
209 words
A dental flossing arrangement, comprising: (a) a pair of discrete housing configured to be held in opposite hands of a user; (b) a supply reel mounted for turning movement on one of the housings; (c) a take-up reel mounted for turning movement on the other of the housings; (d) a supply of dental floss wound on the supply reel and extending from the supply reel between the housings to the take-up reel; (e) first releasable locking means including a first resilient spring on said one housing for normally preventing movement of the supply reel in a locked state due to the inherent resilience of the first spring, and for selectively releasing the supply reel to dispense a length of floss from the supply reel; (f) second releasable locking means including a second resilient spring on said other housing for normally preventing movement of the take-up reel in a locked state due to the inherent resilience of the second spring to thereby hold the dispensed length of floss taut between the housings in the locked states of the supply and take-up reels during flossing; and (g) wind-up means on the take-up reel for releasing the take-up reel to wind the dispensed length of floss on the take-up reel after flossing.
Claim 2
Dependent Claim
209 words
A dental flossing arrangement, comprising: (a) a pair of discrete housing configured to be held in opposite hands of a user; (b) a supply reel mounted for turning movement on one of the housings; (c) a take-up reel mounted for turning movement on the other of the housings; (d) a supply of dental floss wound on the supply reel and extending from the supply reel between the housings to the take-up reel; (e) first releasable locking means including a first resilient spring on said one housing for normally preventing movement of the supply reel in a locked state due to the inherent resilience of the first spring, and for selectively releasing the supply reel to dispense a length of floss from the supply reel; (f) second releasable locking means including a second resilient spring on said other housing for normally preventing movement of the take-up reel in a locked state due to the inherent resilience of the second spring to thereby hold the dispensed length of floss taut between the housings in the locked states of the supply and take-up reels during flossing; and (g) wind-up means on the take-up reel for releasing the take-up reel to wind the dispensed length of floss on the take-up reel after flossing.
Claim 3
Dependent Claim
26 words
The arrangement according to claim 1, wherein each housing has housing parts movable between open and closed positions, and an opening through which the floss extends.
Claim 4
Dependent Claim
15 words
The arrangement according to claim 2, wherein the housing parts of each housing are hinged.
Claim 5
Dependent Claim
38 words
The arrangement according to claim 2, wherein the floss has opposite ends operatively connected to the reels; and wherein the floss and the reels are removably mounted, as a unitary assembly, on the housings in their open positions.
Claim 6
Dependent Claim
37 words
The arrangement according to claim 1, wherein each reel has an elongated shaft on which the floss is wound, and a toothed wheel at one end of a respective shaft and located exteriorly of a respective housing.
Claim 7
Dependent Claim
60 words
The arrangement according to claim 5, wherein the first releasable locking means includes said first resilient spring of one piece with said one housing, a lock on the first spring and biased into locking engagement with the toothed wheel exteriorly of said one housing, and a release on the first spring for selectively releasing the lock from said locking engagement.
Claim 8
Dependent Claim
61 words
The arrangement according to claim 5, wherein the toothed wheel exteriorly of said other housing is a ratchet wheel having teeth sloped along a circumferential direction; and wherein the second releasable locking means includes said second resilient spring of one piece with said other housing, and a catch on the second spring and biased into ratcheting engagement with the ratchet wheel.
Claim 9
Dependent Claim
29 words
The arrangement according to claim 7, wherein the wind-up means includes a grip on the ratchet wheel for moving the ratchet wheel along a forward direction past the catch.
Claim 10
Independent Claim
166 words
A method of dental flossing, comprising the steps of: (a) winding a supply of dental floss on a supply reel, and feeding a leading end of the floss to a take-up reel; (b) mounting the supply reel for turning movement on one housing; (c) mounting the take-up reel for turning movement on another housing; (d) holding one housing in one hand of a user, and holding the other housing in the opposite hand of the user; (e) preventing turning movement of the supply reel in a locked state; (f) preventing turning movement of the take-up reel in a locked state; (g) selectively releasing the supply reel and pulling the housings apart to dispense a length of floss from the supply reel; (h) holding the dispensed length of floss taut between the housings in their locked states; (i) flossing teeth while holding taut the dispensed length of floss; and (j) turning the take-up reel, and winding the dispensed length of floss on the take-up reel after flossing.
Claim 11
Independent Claim
166 words
A method of dental flossing, comprising the steps of: (a) winding a supply of dental floss on a supply reel, and feeding a leading end of the floss to a take-up reel; (b) mounting the supply reel for turning movement on one housing; (c) mounting the take-up reel for turning movement on another housing; (d) holding one housing in one hand of a user, and holding the other housing in the opposite hand of the user; (e) preventing turning movement of the supply reel in a locked state; (f) preventing turning movement of the take-up reel in a locked state; (g) selectively releasing the supply reel and pulling the housings apart to dispense a length of floss from the supply reel; (h) holding the dispensed length of floss taut between the housings in their locked states; (i) flossing teeth while holding taut the dispensed length of floss; and (j) turning the take-up reel, and winding the dispensed length of floss on the take-up reel after flossing.
Claim 12
Dependent Claim
33 words
The method according to claim 9, wherein the mounting steps are performed by opening both housings, and by placing both reels and the floss therebetween, as a unitary assembly, on the opened housings.
Claim 13
Dependent Claim
25 words
The method according to claim 9, wherein the releasing step is performed by manually moving a lock out of locking engagement with said one housing.
Claim 14
Dependent Claim
18 words
The method according to claim 9, wherein the turning step is performed by manually moving the take-up reel.
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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) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |