US3835872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cleaning device
Assignee: Individual
•
Filing: 1972-11-16
•
Granted: 1974-09-17
•
Expires: 1992-11-16
Abstract
Abstract Apparatus for holding and tightening a flexible cord for dental cleaning, comprising a handle having a detachable yoke for tautly supporting a run of said cord and a pair of anchor pins carried by the handle, one of which is attached to a reciprocable trigger mounted in the handle for tensioning the cord.
Inventors
- 👤 H Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:51
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/04; A61C15/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
Apparatus for holding and tightening a flexible cord for dental cleaning comprising: a handle having a lateral recess; a detachable yoke carried by the handle; pin means carried by said handle for anchoring a length of said cord; a reciprocable trigger disposed in the said lateral recess and mounting one of said pin means so that tension in the said cord may be adjusted by movement of the trigger; a rack having ratchet teeth disposed in said recess; a reciprocable pawl carried by said trigger and positioned to engage the teeth of said rack to secure the trigger in a selected position; and release means protruding from the said handle recess and attached to said pawl for disengaging the pawl from the said ratchet teeth and to permit movement of the trigger without interference from the ratchet teeth.
Claim 2
Dependent Claim
138 words
Apparatus for holding and tightening a flexible cord for dental cleaning comprising: a handle having a lateral recess; a detachable yoke carried by the handle; pin means carried by said handle for anchoring a length of said cord; a reciprocable trigger disposed in the said lateral recess and mounting one of said pin means so that tension in the said cord may be adjusted by movement of the trigger; a rack having ratchet teeth disposed in said recess; a reciprocable pawl carried by said trigger and positioned to engage the teeth of said rack to secure the trigger in a selected position; and release means protruding from the said handle recess and attached to said pawl for disengaging the pawl from the said ratchet teeth and to permit movement of the trigger without interference from the ratchet teeth.
References Cited (Backward Citations)
US1512633A
Cited
US1640607A
Cited
US2217917A
Cited
US2381530A
Cited
US2554526A
Cited
US2873749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |