Patent US4691264A successfully refreshed from Google Patents.
US4691264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static amplification stun gun
Assignee: Individual
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Filing: 1985-09-23
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Granted: 1987-09-01
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Expires: 2005-09-23
Abstract
Abstract A static amplification stun gun is provided and consists of a pistol shaped housing. A canted cam lever trigger compresses a piezoelectric crystal producing a static charge which is stored in a capacitor. A grounded target, such as an unruly person receives the charge through the air from a probe at the end of the gun.
Inventors
- 👤 Brian E. Schaffhauser
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:55
CPC Classifications
F; F41; F41H; F41H13/00; F41H13/0012; F41H13/0018; F41B; F41B15/00; F41B15/02; F41B15/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A static amplification stun gun comprising in combination: (a) a non-conductive pistol shaped housing having a hollow barrel and an insulated hand grip; (b) a piezoelectric crystal unit positional within said barrel; (c) at least one capacitor postioned within said barrel and operatively connected to said piezoelectric crystal unit; (d) a probe positioned on an end of said barrel and operatively connected to said capacitor and said piezoelectric crystal unit; and (e) a trigger means in said hand grip for activating said piezoelectric crystal unit producing a static charge which is then stored in said at least one capacitor until a grounded target, such as an unruly person, can receive said static charge through the air from said probe, wherein said piezoelectric crystal unit comprises: (f) an insulated cylinder; (g) a piezoelectric crystal fixed within said container; (h) two contact members operatively connected to said piezoelectric crystal; and (i) a piston having an arm, said piston slidable within said cylinder to make contact and compress said piezoelectric crystal with said arm extending outwardly from an end of said cylinder.
Claim 2
Dependent Claim
179 words
A static amplification stun gun comprising in combination: (a) a non-conductive pistol shaped housing having a hollow barrel and an insulated hand grip; (b) a piezoelectric crystal unit positional within said barrel; (c) at least one capacitor postioned within said barrel and operatively connected to said piezoelectric crystal unit; (d) a probe positioned on an end of said barrel and operatively connected to said capacitor and said piezoelectric crystal unit; and (e) a trigger means in said hand grip for activating said piezoelectric crystal unit producing a static charge which is then stored in said at least one capacitor until a grounded target, such as an unruly person, can receive said static charge through the air from said probe, wherein said piezoelectric crystal unit comprises: (f) an insulated cylinder; (g) a piezoelectric crystal fixed within said container; (h) two contact members operatively connected to said piezoelectric crystal; and (i) a piston having an arm, said piston slidable within said cylinder to make contact and compress said piezoelectric crystal with said arm extending outwardly from an end of said cylinder.
Claim 3
Dependent Claim
29 words
A static amplification stun gun as recited in claim 1, wherein said trigger means includes a canted cam lever to operate said piston arm of said piezoelectric crystal unit.
Claim 4
Dependent Claim
64 words
A static amplification stun gun as recited in claim 2, wherein said canted cam lever comprises: (j) a hand lever member extending from said hand grip of said housing; (k) a cam pivotally mounted to upper end of said hand lever member whereby said cam engages with said piston arm to operate said piston within said piezoelectric crystal unit to produce said static charge.
Claim 5
Dependent Claim
50 words
A static amplification stun gun as recited in claim 3, wherein said canted cam lever further includes a return spring mounted between lower end of said hand lever member and said hand grip of said housing to assist in returning said hand lever member back to its normal non-operative position.
Claim 6
Dependent Claim
152 words
A static amplification stun gun as recited in claim 4, further comprising a stepped-up hydraulic cylinder having liquid therein mounted between said piston arm of said piezoelectric crystal unit and said cam of said canted cam lever, said hydraulic cylinder comprising: (l) a body having a large chamber portion and a small chamber portion therein; (m) a large piston mounted to said piston arm of said piezoelectric crystal unit extending within said large chamber portion of said body; and (n) a small piston having an arm slideable within said small chamber portion of said body and extending outwardly therefrom to make contact with said cam so that when said cam pivots and engages with said small piston arm said small piston will compress said liquid to activate said large piston thus operating said piston of said piezoelectric crystal unit, to increase compression of said piezoelectric crystal which will increase said static charge.
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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |