Patent US4923848A successfully refreshed from Google Patents.
Patent US3878876A successfully refreshed from Google Patents.
US3878876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-purpose saw blade suspension arrangement for reciprocating saws
Assignee: Individual
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Filing: 1974-01-09
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Granted: 1975-04-22
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Expires: 1994-01-09
Abstract
Abstract To floatingly support a saw blade in a frame, the frame is formed, at its free ends, with forked elements; clamping elements are clamped to the saw. The engagement between the forked element (the blade fitting between the gap in the fork) and the clamping element is by means of a depression-projection fulcrum engagement, so that the clamping element, to which the saw blade is attached, can rock or tilt with respect to the forked element, attached to the frame, thus avoiding holding stresses on the saw blade which lead to breakage of the blade at the attachment or clamping points.
Inventors
- 👤 Helmut Abel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:08
CPC Classifications
B; B27; B27B; B27B3/00; B27B3/28; B27B3/30; B27B3/32; B23; B23D; B23D49/00; B23D49/007; B23D49/04; B23D49/06; B23D51/00; B23D51/08; B23D51/12; B23D51/14; B23D51/16; B23D69/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14'') disposed at one end of said frame and rockably mounting said clamping element on the outside of the saw frame, to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements.
Claim 2
Dependent Claim
138 words
In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14'') disposed at one end of said frame and rockably mounting said clamping element on the outside of the saw frame, to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements.
Claim 3
Dependent Claim
138 words
In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14'') disposed at one end of said frame and rockably mounting said clamping element on the outside of the saw frame, to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements.
Claim 4
Dependent Claim
138 words
In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14'') disposed at one end of said frame and rockably mounting said clamping element on the outside of the saw frame, to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements.
Claim 5
Dependent Claim
41 words
Arrangement as claimed in claim 1, wherein the fork-shaped element of the saw has a V-shaped hollow seat provided with lateral stopping faces, and the clamping element has a fulcrum edge in the form of a prismatic or wedge shaped end.
Claim 6
Dependent Claim
42 words
Arrangement as claimed in claim 1, wherein the fork-shaped element is provided with prismatic or wedge-shaped projections serving as a fulcrum and formed with lateral stopping faces, and the clamping element has an essentially V-shaped hollow seat to receive the fulcrum projection.
Claim 7
Dependent Claim
49 words
Arrangement as claimed in claim 1, wherein (FIG. 6) the fork-shaped element (14) has at least two conically-shaped hollow seats (14a) and the clamping element (13) is formed with generally conically shaped, or similarly tapered projections (13a) to be located in the conically-shaped hollow seats and serve as fulcrums.
Claim 8
Dependent Claim
36 words
Arrangement as claimed in claim 1, wherein (FIG. 7) the fork-shaped element (14'') is provided with two or more conically-shaped, or other similarly tapered projections (14''a), and the clamping element (13'') has conically-shaped hollow Seats (13''a).
Claim 9
Dependent Claim
51 words
Arrangement as claimed in claim 1, wherein the clamping element has an incision which interrupts the contact edge of the clamp and which traverses the clamp to separate the clamping element into two end portions; and means to clamp the saw blade when introduced into the incision in the clamping element.
Claim 10
Dependent Claim
40 words
Arrangement according to claim 1, wherein the clamping element has an incision which separates the interior portion of the clamping element into two interior parts; and means to clamp the saw when introduced into the incision in the clamping element.
Claim 11
Dependent Claim
26 words
Arrangement according to claim 1, wherein the clamping element has a U-shaped incision, or groove to permit introduction of the end of the saw blade therein.
References Cited (Backward Citations)
DE125273C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |