Patent US4051880A successfully refreshed from Google Patents.
US4051880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dustless routers
Assignee: Singer Co
•
Filing: 1976-10-29
•
Granted: 1977-10-04
•
Expires: 1996-10-29
Abstract
Abstract A dustless portable electric router comprising a base having a dust chamber formed below a motor mounted to the base to be axially adjustable therein. A pair of handles are connected to the base with a passage formed in one of the handles in communication with the dust chamber. A blower is formed on the top side of the motor with the router connected to and driven by an extension from the motor armature shaft. A flexible conduit interconnects the handle passage and the blower, and a dust bag collects the dust and debris from the blower discharge. The dust chamber has side openings which are enclosed by detachably connected plastic shrouds that provide operator visibility. A light is connected in the other handle and serves to illuminate the dust chamber and the surrounding work. The dust bag is hung from the blower at the "back" of the router housing, and the blower is positioned remote from the work engaging flat bottom of the router base. The conduit which interconnects the handle and blower is flexible to permit axial adjustment of the motor within the base.
Inventors
- 👤 Charles E. Hestily
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:07
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0042; B23Q11/0046; B23Q11/08; B23Q16/00; B23Q17/00; B23Q17/24; B23Q17/2404; B27; B27C; B27C5/00; B27C5/10; Y; Y10; Y10T; Y10T408/00; Y10T408/50; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306552; Y10T409/306608; Y10T83/00; Y10T83/849; Y10T83/853; Y10T83/855; Y10T83/856; Y10T83/857
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
A dustless portable electric router comprising: a. a base having a dust chamber formed therein, b. a handle connected to the base, c. a passage formed in the handle in communication with the dust chamber, d. a motor mounted to the base to be axially adjustable therein, e. the motor having a shaft therein rotatable to actuate the router, f. a blower having a rotor affixed to and rotatively driven by the motor shaft, g. a conduit interconnecting the handle passage to the blower whereby dust and debris collected in the dust chamber will be drawn into and discharged from the blower, and h. a dust bag connected to the blower to collect the blower discharge.
Claim 2
Dependent Claim
116 words
A dustless portable electric router comprising: a. a base having a dust chamber formed therein, b. a handle connected to the base, c. a passage formed in the handle in communication with the dust chamber, d. a motor mounted to the base to be axially adjustable therein, e. the motor having a shaft therein rotatable to actuate the router, f. a blower having a rotor affixed to and rotatively driven by the motor shaft, g. a conduit interconnecting the handle passage to the blower whereby dust and debris collected in the dust chamber will be drawn into and discharged from the blower, and h. a dust bag connected to the blower to collect the blower discharge.
Claim 3
Dependent Claim
46 words
The combination claimed in claim 1 wherein: a. the conduit is externally connected between the handle and the blower, and b. the conduit is flexible in the axial direction to permit axial adjustment of the motor while remaining connected between the handle passage and the blower.
Claim 4
Dependent Claim
48 words
The combination claimed in claim 1 wherein: a. a pair of handles are connected to the base diametrically opposite each other, and b. the dust bag is connected on one side of the blower intermediate the pair of handles, and is connected to the blower above the handle.
Claim 5
Dependent Claim
53 words
The combination claimed in claim 3 wherein: a. one of the handles has the dust passage formed therein in communication with the dust chamber, and b. the other handle has an externally actuated trigger switch mounted therein in circuit with the motor, and an internally disposed electric light to illuminate the dust chamber.
Claim 6
Dependent Claim
54 words
The combination claimed in claim 4 wherein: a. the dust chamber has an opening on at least one side adjacent the handles connection to the base, and b. a plastic shroud detachably connected in the opening of the dust chamber to permit operator visibility in the dust chamber and to illuminate the surrounding work.
Claim 7
Dependent Claim
65 words
The combination claimed in claim 5 wherein: a. the dust chamber has a pair of openings on diametrically opposed sides opposite the pair of handle connections to the base, and b. a pair of clear plastic shrouds detachably connected in the openings to completely enclose the sides of the dust chamber and permit operator visibility in the dust chamber from either side of the handles.
Claim 8
Dependent Claim
166 words
The combination claimed in claim 3 wherein: a. the base has a flat bottom for work engaging, b. the base bottom has an aperture therethrough in communication with the dust chamber, c. a pair of struts extends upwardly on opposite sides of the bottom, d. a sleeve is connected to the struts in spaced relationship to the bottom, e. a housed motor is axially adjustably mounted in the sleeve and enclosing the top of the dust chamber, f. a bit carrying chuch is drivingly connected to the motor shaft and extending through the dust chamber in alignment with the bottom aperture, g. each of the handles are connected to one of the struts, h. the handle passage extends through an opening in the strut, and i. plastic shrouds are connected to the base to enclose the area between the sleeve and the bottom to form see through sides for the dust chamber whereby the operator may view the dust chamber from either side of the router.
Claim 9
Dependent Claim
33 words
The combination claimed in claim 7 wherein: a. a light is connected to the handle not having the passage, whereby the dust chamber will be visible and the surrounding work will be illuminated.
Claim 10
Dependent Claim
29 words
The combination claimed in claim 7 wherein: a. a fan is affixed to the shaft of the motor, and b. the fan discharges ventilation air into the dust chamber.
Claim 11
Dependent Claim
27 words
The combination claimed in claim 9 wherein: a. the blower is mounted remote to the base bottom, and b. the fan is mounted adjacent the dust chamber.
References Cited (Backward Citations)
US2268863A
Cited
US2252160A
Cited
US3594958A
Cited
US3785092A
Cited
US3786846A
Cited
US3837383A
Cited
US3882598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |