Patent US4993154A successfully refreshed from Google Patents.
US4993154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaving apparatus
Assignee: Individual
•
Filing: 1990-03-01
•
Granted: 1991-02-19
•
Expires: 2010-03-01
Abstract
Abstract A shaving apparatus is described that has a handle, a bifurcated expansion means with one end connected to the handle and with another end attached to a razor head containing at least one blade and at least one spacer that are retained in a base in such a manner so as to allow the blades and spacers to move longitudinally as the base, blades and spacers are moved from a convex curve through a straight configuration to a concave curve to accommodate the various surfaces requiring shaving on the body. There is an adjustment means on the apparatus that allows the user to select the curvature of the blade desired without visually referencing the apparatus. There is a contraction means to enhance the movement of the blades from the expanded position of the concave configuration to the retracted position of the convex configuration.
Inventors
- 👤 Allan Radcliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:34
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/52; B26B21/521; B26B21/08; B26B21/14; B26B21/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
A shaving apparatus comprising: a. a handle; b. a bifurcated expansion means with one end attached to the handle and an other end attached to a razor head to provide a tensional force that changes a curvature of the razor head; and c. an adjustment means in the bifurcated expansion means to expand the bifurcated expansion means.
Claim 2
Dependent Claim
57 words
A shaving apparatus comprising: a. a handle; b. a bifurcated expansion means with one end attached to the handle and an other end attached to a razor head to provide a tensional force that changes a curvature of the razor head; and c. an adjustment means in the bifurcated expansion means to expand the bifurcated expansion means.
Claim 3
Dependent Claim
58 words
A shaving apparatus as described in claim 1 wherein the bifurcated expansion means further comprises: a. a passageway formed between a first arm and a second arm of the bifurcated expansion means; and b. a first channel and a second channel formed between the edges of the first arm and the second arm of the bifurcated expansion means.
Claim 4
Dependent Claim
99 words
A shaving apparatus as described in claim 1 wherein the razor head further comprises: a. a base; b. at least one razor blade on the base; c. at least one spacer on the base; d. a plurality of elongated retainer ports in the base, in the blades and in the spacers; and e. a plurality of retainer means in the elongated retainer ports to retain the blades and the spacers in a sliding relationship with the base to allow the blades and the spacers longitudinal movement when the curvature of the base, the blades and the spacers is changed.
Claim 5
Dependent Claim
187 words
A shaving apparatus comprising: a. a handle; b. a base; c. at least one razor blade on the base; d. at least one spacer on the base; e. a plurality of elongated retainer ports in the base, in the blades and in the spacers; and f. a plurality of retainer means in the elongated retainer ports to retain the blades and the spacers in a sliding relationship with the base to allow the blades and the spacers longitudinal movement when the curvature of the base, the blades and the spacers is changed; g. a bifurcated expansion means with one end attached to the handle and an other end attached to the base to provide a tensional force that changes a curvature of the base, the blades and the spacers; h. a passageway formed between a first arm and a second arm of the bifurcated expansion means; i. a first channel and a second channel formed between the edges of the first arm and the second arm of the bifurcated expansion means; and j. an adjustment means in the bifurcated expansion means to expand the bifurcated expansion means.
Claim 6
Dependent Claim
187 words
A shaving apparatus comprising: a. a handle; b. a base; c. at least one razor blade on the base; d. at least one spacer on the base; e. a plurality of elongated retainer ports in the base, in the blades and in the spacers; and f. a plurality of retainer means in the elongated retainer ports to retain the blades and the spacers in a sliding relationship with the base to allow the blades and the spacers longitudinal movement when the curvature of the base, the blades and the spacers is changed; g. a bifurcated expansion means with one end attached to the handle and an other end attached to the base to provide a tensional force that changes a curvature of the base, the blades and the spacers; h. a passageway formed between a first arm and a second arm of the bifurcated expansion means; i. a first channel and a second channel formed between the edges of the first arm and the second arm of the bifurcated expansion means; and j. an adjustment means in the bifurcated expansion means to expand the bifurcated expansion means.
Claim 7
Dependent Claim
145 words
A shaving apparatus as described in claim 4 wherein the adjustment means further comprises: a. a rod within the passageway to expand the bifurcated expansion means; b. a first pad and second pad in a plane parallel to and extending slightly outside of an outer surface of the bifurcated extension means; c. the first pad being connected to one end of a first tab and the second pad being connected to one end of a second tab; d. the first tab and the second tab being slidingly placed in the first channel and the second channel, respectively; e. an other end of the first tab and an other end of the second tab being connected to the rod; and f. the first tab and the second tab guiding the first pad and the second pad parallel to the first channel and the second channel, respectively.
Claim 8
Dependent Claim
21 words
A shaving apparatus as described in claim 5 further comprising a textured surface on the first pad and the second pad.
Claim 9
Dependent Claim
59 words
A shaving apparatus as described in claim 4 wherein the first channel and the second channel further comprise a plurality of detents at a plurality of preselected parallel points on the first channel and on the second channel to releasingly engage at least one detent knob on at least one side of the first tab and the second tab.
Claim 10
Dependent Claim
355 words
A shaving apparatus comprising: a. a handle; b. a base; c. at least one razor blade on the base; d. at least one spacer on the base; e. a plurality of elongated retainer ports in the base, in the blades and in the spacers; f. a plurality of retainer means in the elongated retainer ports to retain the blades and the spacers in a sliding relationship with the base to allow the blades and the spacers longitudinal movement when a curvature of the base, the blades and the spacers is changed; g. a bifurcated expansion means with one end attached to the handle and an other end attached to the base to provide a tensional force that changes the curvature of the base, the blades and the spacers; h. a passageway formed between a first arm and a second arm of the bifurcated expansion means; i. a first channel and a second channel formed between the edges of the first arm the second arm of the bifurcated expansion means; j. a rod within the passageway to expand the bifurcated expansion means; k. a first pad and a second pad in a plane parallel to and extending slightly outside of an outer surface of the bifurcated extension means; l. the first pad being connected to one end of a first tab and the second pad being connected to one end of a second tab; m. a textured surface on the first pad and the second pad; n. the first tab and the second tab being slidingly placed in the first channel and the second channel, respectively; o. an other end of the first tab and an other end of the second tab being connected to the rod; p. the first tab and the second tab guiding the first pad and the second pad parallel to the first channel and the second channel, respectively; and q. a plurality of detents at a plurality of preselected parallel points in the first channel and in the second channel to releasing engage at least one detent knob on at least one side of the first tab and the second tab.
Claim 11
Dependent Claim
355 words
A shaving apparatus comprising: a. a handle; b. a base; c. at least one razor blade on the base; d. at least one spacer on the base; e. a plurality of elongated retainer ports in the base, in the blades and in the spacers; f. a plurality of retainer means in the elongated retainer ports to retain the blades and the spacers in a sliding relationship with the base to allow the blades and the spacers longitudinal movement when a curvature of the base, the blades and the spacers is changed; g. a bifurcated expansion means with one end attached to the handle and an other end attached to the base to provide a tensional force that changes the curvature of the base, the blades and the spacers; h. a passageway formed between a first arm and a second arm of the bifurcated expansion means; i. a first channel and a second channel formed between the edges of the first arm the second arm of the bifurcated expansion means; j. a rod within the passageway to expand the bifurcated expansion means; k. a first pad and a second pad in a plane parallel to and extending slightly outside of an outer surface of the bifurcated extension means; l. the first pad being connected to one end of a first tab and the second pad being connected to one end of a second tab; m. a textured surface on the first pad and the second pad; n. the first tab and the second tab being slidingly placed in the first channel and the second channel, respectively; o. an other end of the first tab and an other end of the second tab being connected to the rod; p. the first tab and the second tab guiding the first pad and the second pad parallel to the first channel and the second channel, respectively; and q. a plurality of detents at a plurality of preselected parallel points in the first channel and in the second channel to releasing engage at least one detent knob on at least one side of the first tab and the second tab.
Claim 12
Dependent Claim
34 words
A shaving apparatus as described in claim 8 further comprising a contraction means on the bifurcated expansion means to move the first and the second arms from an expanded position to a contracted position.
References Cited (Backward Citations)
US1798447A
Cited
US1966307A
Cited
US3407496A
Cited
US3600804A
Cited
US4208791A
Cited
US4454744A
Cited
US4599793A
Cited
GB2172236A
Cited
US4693003A
Cited
US4791724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |