Patent US4944641A successfully refreshed from Google Patents.
US4944641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch engager sleeve
Assignee: Individual
•
Filing: 1989-08-02
•
Granted: 1990-07-31
•
Expires: 2009-08-02
Abstract
Abstract A clutch engager sleeve which is capable of engaging a screw gun is disclosed. The engager sleeve is able to be secured to the screw gun, preferably by means of a threaded lock down collar. Preferably, the clutch engager is secured to the screw gun via a shank, with which it is provided. The clutch engager contacts a drill chuck by screwing the drill chuck to, preferably, its thread, and then driving a screwhead of a reverse lock down screw to secure the chuck from its front directly to the clutch engager. This arrangement prevents the chuck head from coming off in the reverse mode. The clutch engager effectively provides the necessary pressure in both forward and reverse modes.
Inventors
- 👤 Andre Alves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:43
CPC Classifications
B; B25; B25B; B25B23/00; B25B21/00; B25B21/007; Y; Y10; Y10T; Y10T279/00; Y10T279/34; Y10T279/3406; Y10T279/3412; Y10T408/00; Y10T408/94; Y10T408/95; Y10T408/957
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A clutch engager sleeve for a drill gun having a forward mode and a reverse mode, comprising: a drive converter capable of receiving a reverse lock down screw; a drill chuck having a cavity, said drill chuck being secured to said drive converter; a clutch engager adjacent said drive converter, said clutch engager providing pressure for a forward mode and a reverse mode; a shank extending from said clutch engager, said shank being capable of engagement with a screw gun; and, a lock down collar for securing said shank and applying pressure to said clutch engager in the forward mode and the reverse mode.
Claim 2
Dependent Claim
104 words
A clutch engager sleeve for a drill gun having a forward mode and a reverse mode, comprising: a drive converter capable of receiving a reverse lock down screw; a drill chuck having a cavity, said drill chuck being secured to said drive converter; a clutch engager adjacent said drive converter, said clutch engager providing pressure for a forward mode and a reverse mode; a shank extending from said clutch engager, said shank being capable of engagement with a screw gun; and, a lock down collar for securing said shank and applying pressure to said clutch engager in the forward mode and the reverse mode.
Claim 3
Dependent Claim
25 words
The clutch engager sleeve according to claim 1, wherein said drive converter and said drill chuck are each complementary threaded for securement to one another.
Claim 4
Dependent Claim
21 words
The clutch engager sleeve according to claim 1, wherein said shank has a hexagonal configuration for engagement to a screw gun.
Claim 5
Dependent Claim
26 words
The clutch engager sleeve according to claim 1, wherein said lock down collar is treaded so as to be capable of engagement with a screw gun.
Claim 6
Dependent Claim
23 words
The clutch engager sleeve according to claim 1, further comprising means for stablizing said clutch engager in place with said lock down collar.
Claim 7
Dependent Claim
20 words
The clutch engager sleeve according to claim 5, wherein said means for stablizing is a washer adjacent said clutch engager.
Claim 8
Dependent Claim
16 words
The clutch engager sleeve according to claim 6, wherein said washer is made of stainless steel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |